*Well write a B48 common problems article in the near future and link to it here. Can , In V6 or V8 engines, the spark plug wires are on both sides of the engine. 2019-present F40 M135i xDrive We expect the B48 will out-perform the N20 with further tuning developments in the future. Save my name, email, and website in this browser for the next time I comment. Its truly an excellent engine for its size. Though, these issues usually dont pop up until 80,000 100,000+ miles. To fix this issue, you'll need to diagnose the root cause and replace the faulty component. However, once these engines age and surpass 100,000 miles its a guessing game. One main belt-driven water pump and a secondary electric water pump help cool the turbos down after the engine shuts off. Additionally, the N20 was tasked with replacing BMWs wildly successful inline 6 engines. We believe it allows BMW to focus on perfecting one design. Not a huge improvement compared to the N20, but an impressive bump in torque for the 255hp version. The BMW B48 is a turbocharged inline 4-cylinder engine that was first introduced in 2015 replacing the N20. However, its usually the rods or pistons that let go first. Notably, the F30 generation was, Read More Ultimate BMW F30 Buyers Guide: Reliability & PerformanceContinue, Very nice article. However, keep in mind that attempting to repair your engine on your own can be risky and could potentially result in further damage if not done correctly. ago. Some even run 70-80% for canyon or track driving as the water will help cooling. Both can make over 300whp with tunes and basic bolt-ons. She has had the car since new and it now has around 70k km on. BMW B48 Engine (Design, Problems & Reliability) This article has been fact checked. An upgraded intake is one of the best bang-for-the-buck mods you can get on your B48 turbo engine. Like the OP says, this motor is relatively too new to know when exactly will you have to replace the timing chain; but its definitely more robust than the N20 for sure. Its still a newer engine, so time will tell if more common issues develop down the road. . Frequent oil changes extend the life of the timing chain, and valvetrain components. Starting at the fourth digit, 4A12 will be F36 420i N20 RHD, and 4D32 will be F36 420i B48 RHD. A tune and bolt-ons push the N20 to 300+whp. Bore x Stroke: 84.0mm (3.31) x 90.1mm (3.55), Injectors:Bosch solenoid style direct injectors, ***Specs for 2.0L BMW N20 engine (N13 and N26 have slightly different specs). ~325-350wtq. Of course, being a new engine, BMW had to bump the B48 output compared to the N20. Were big fans of the JB4 as a starting tune since it allows precise boost control and lots of possibilities. Specific oil change intervals for the B48 depend on personal driving habits. Save my name, email, and website in this browser for the next time I comment. Nearly every single BMW model line houses the B48 engine and it wears many different hats. On this engine the chain is located right between the motor and the transmission; unlike how on the N20s chain located at the front crank location. Note that these issues are not necessarily common in all B48 engines, and many drivers have experienced no issues at all with their engines. ~300-350whp. 16K miles. Compared with its N20 predecessor, the B48 uses a more undersquare design. Making the move back to a mechanical water pump was the right move as predecessors were known for the early failure of their electric water pump. Stage 2 91 octane: up to 16% HP / 28% TQ This is a decent increase over the lower 10.2 compression ratio on the BMW N20 engine. Keep up the good work!!! Within the modular B series of engines, it does fall short of the B58 which seems to be the most reliable engine in the family. 82.0 mm bore x 94.6mm stroke (3.23 x 3.72). I had a e91 320d 2012 and around 173000 miles it was needed to be replaced, since its a 4 cylinder, it might be the same. One common issue with the B48 engine is a rough idle. The cookie is used to store the user consent for the cookies in the category "Other. Yes, we believe the BMW B48 is a pretty reliable engine. This cookie is set by GDPR Cookie Consent plugin. A forum community dedicated to BMW owners and enthusiasts. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Otherwise, scroll down and check out some more awesome B48 content. Yes, it's expensive to maintain a 3-Series BMW once it's outside of the factory or CPO warranty. Most of the time it is piston nr.2 We suspect cooling system issues, valve covers, and oil pans gaskets may become commonplace at 100,000+ miles. Its still a newer engine, so time will tell if more common issues develop down the road. Sn1ster 4 mo. Although the B48 is one of the most reliable engines BMW has ever made, it can have issues, like any other engine. Stage 1 91 octane: up to 14% HP / 26% TQ Although, the B58 is successful with its 11 to 1 compression, so we expect the same from the B48. Weve always run Liqui Moly oils on our BMWs with great success. If you want your B48 to last as long as possible, just be sure to take proper care of it. According to the NHTSA, the 2020 BMW X3 has had 10 official recalls. It was a big deal. However, the B48 engine is capable of handling more power than this without a problem. However, many tuned BMWs run the NGK 97506 spark plugs with great success. Of course, turbo BMW engines gain respectable power from simple mods. As per the N20, the block and head are made from aluminium. That is not at all a knock to the N20 or B48, but it is reality. Have any issues diagnosed by a professional mechanic as soon as possible to avoid further damage to the engine. However, B48 is the widely accepted engine code for the B46 and B48. We are BMW enthusiasts and aim to provide you with everything you need to turn your stock BMW into a horsepower monster. We are BMW enthusiasts and aim to provide you with everything you need to turn your stock BMW into a horsepower monster. Point is standard maintenance isnt the cheapest. Save my name, email, and website in this browser for the next time I comment. 1. The B48 top mount air-to-water intercooler uses a front mount heat exchanger to cool charge air temps. A higher output version of the B48 is in some 2019+ 35i models. Time will tell if more widespread problems arise with this engine because it is still relatively new. Indeed, the BMW B48 engine has its fair share of issues. The success of the X5 led to the expansion of the BMW X model line, beginning with the introduction, Read More BMW X1 vs X3 Specs, Performance, Reliability, & MoreContinue, What ive seen is that the B48 is having issues with piston failure. Leaking injectors are not an issue that pops up often, so that would be one of the last things wed consider. Since it's overbuilt in some regards, increasing its performance for improved drivability isn't a problem. I will dyno it before mapping as it feels more like 200 bhp but I've been quoted 260 on the remap. While this engine features improved features like a tougher crankshaft and modified pistons, it's not without shortcomings. My guess is that the G20 will prove to be very reliable too. The B48 uses a single twin-scroll turbo. You also have the option to opt-out of these cookies. These cookies ensure basic functionalities and security features of the website, anonymously. At least when you compare the B48 and B58 reliability to that of the earlier N54, N55, N63, S65, etc. This cookie is set by GDPR Cookie Consent plugin. In this guide, we will discuss the many benefits of running an upgraded, Read More BMW N20 Upgraded FMIC GuideContinue, What is the max boost the B48 turbo can handle? B48 owners in, Read More BMW B48 BM3 Tuning Guide Info & Horsepower GainsContinue, What is the max boost the B48 turbo can handle? Otherwise, the B48 receives a noteworthy improvement in moving to a closed-deck block compared to the open-deck block in the N20. Read our post about B48 mods here: BMW B48 300whp. Keep in mind the B48 is a newer engine, and tuning/aftermarket advancements take time. No, completely different design. (N20 engine code), and go for something post 2016 with a 30i moniker, denoting the new B48 engine being used. The larger B58 engine also overshadows the B48 for tuning potential. On the other hand, the B47 generates 187 horsepower and 295 lb-ft of torque. Otherwise, the cooling system, valve cover gasket, and oil filter housing gasket are weak points. BMW reliability seems to be trending in the right direction, though. The B47 has proven to be reliable so far in my mothers 320d. The B48 is without any serious common problems to date. Direct injection (DI) engines come with one flaw, which is carbon build-up on intake valves. The reference to the B58 is in regards to engine strength with their closed deck blocks. How much HP can a B48 handle? Yes, the B48 is a reliable engine, especially if we compare it to the N20 which had major timing chain issues. However, compression also increases on the B48 which isnt the greatest for strength on boosted engines. Not too many N20 owners are truly pushing the limits. However, if the damage is severe, it may need to be replaced. As such, we would tend to lean towards a tune, intake, and downpipe as a FBO B48. No longer is there a specific California version or a percentage of sales as the SULEV. PIcs? Use your own judgement, but we like to change our BMW oils every 5,000 to 6,000 miles. BMW N20 Engine Reliability, Known Issues, and More. Gasket oil leaks can be expensive repairs at the shop. Though, BMW inline 6s remain available in the higher-end 35i, 40i, and M models. 4. Both have the same specs on paper so I am not sure whats the difference. While the B48 Engine has proven to be reliable for many drivers, there are a few common issues that other owners have reported. ( 5000 8000 miles ) definitly on a tuned B48. Ignition coils also wear pretty quickly on turbo engines like the B48. Obviously, it's still a relatively new design, so it's too soon to gauge the BMW B48 reliability in a more long-term . The lines might be long and itll be a wait and see for codes. In realty, B48 powered vehicles like the F30 are slower than their N20 counter parts (see CR and C&D test results with similar specs cars) tuners have not been able to extract as much power out of the B48 either by PTF and Dinan: N20 Dinan Dyno: 268 hp JavaScript is disabled. For B48 you meant? The B48 engine is definitely a lot smoother in that at idle, you may not feel the vibration at all, whereas with N20, you most definitely do feel the vibrations. That said, the main water pump on the B48 can fail unexpectedly, leaving the car in limp mode or leaving you stranded in the worst-case scenario. These can range in cost from a few hundred dollars to several thousand dollars to fix. Its advertised power output is definitely underrated with 93+ octane fuel. N20, N26, B46, B48 Turbo Engine / Drivetrain / Exhaust Modifications. Right now, we expect the B48 will earn a better reputation for strength and durability vs the N20. Yes, the BMW B48 engine is very reliable compared to similar BMW engines. The great news is the B48 is off to an excellent start from a reliability perspective. Again, the same concepts apply with the HP discussion above. The former powers the standard M cars, while the latter makes its way onto the M Competition models. Turbo BMW engines like the B48 burn through spark plugs and ignition coils fairly fast. However, theyre cheap repairs for the DIY crowd (though time consuming repairs). Expect B58 solenoid issues to arise around the 80,000-100,000 mile mark. We always recommend an upgraded intake as the first mod to make on the, Read More BMW B48 Upgraded Intake GuideContinue, This is a question that comes up often. The bm3 tune from Pro Tuning Freaks uses a mobile app and web interface for simple flash tuning. Our garage currently includes a 2008 135i, 2007 335i, and 2008 535i. Like this content? Your email address will not be published. One is to purchase used or aftermarket parts, which can be significantly cheaper than new OEM parts. Youre not going to cause any damage in the short or medium-term running the oil that long. Additionally, responsible for delivering the impressive power, the upgraded 302hp B48 receives a larger turbo. Some may shame BMW for cutting costs. We are hoping to soon add an F80 M3 and F82 M4 GTS. Its a fairly simple fix and is covered under warranty. If left unchecked, the engine could run low on coolant. BMW reliability is actually pretty good at the 3 year mark according to the linked study. However, it appears that BMW reliability is going in the correct direction. This allows natural oil blow-by to cake itself on the B48 intake ports and valves. Another note, the B48 is a part of BMWs modular B series engine objective. B48/46 is not basically the same engine. Though the bump in compression to 11 to 1 is questionable. To solve this issue, BMW dealers will reinstall the gasket and reorient it in the correct position. Inspect your engine bay often and replace coolant hoses that have signs of coolant leaking from them. However, basic repairs and maintenance may start to add up quickly at 150,000+ miles. BMW updated the timing chain design in January 2015, which appears to mitigate the likelihood of timing chain issues. **Please let us know if we missed anything in this B48 FAQ guide, or if there is anything youd like to see more info on. At higher mileage, excess carbon build-up might lead to a rough idle. The B48 is a 2.0L single turbo engine that is part of the BMW B series modular engines. We also use third-party cookies that help us analyze and understand how you use this website. Its also not overly expensive, especially for those willing to DIY some maintenance. Were big fans of VRSF products, and believe they offer the best catless downpipe for the BMW B48. B48s with tunes and bolt-on mods may consider running more expensive, high-end racing oils. In most cases, you can repair a faulty BMW B48 engine. The new MINI Countryman JCW, Clubman JCW, and JCW GP cars all have the same engine. . The cookie is used to store the user consent for the cookies in the category "Performance". Other features shared with the N20 include a twin-scroll turbocharger, direct injection, variable valve lift (Valvetronic) and variable valve timing (Double VANOS). However, engine strength is the big question. We are hoping to soon add an F80 M3 and F82 M4 GTS. The engine is being included in the also new bmw x1. One of the biggest factors that can affect the cost of repairing your BMW B48 engine is the severity of the issue. This ensures a precise, strong fit. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Engine limits are always a tough topic. B48 pistons are cast, but remain fairly strong. How much PSI can the B48 stock turbo handle without ruining longevity? By clicking Accept, you consent to the use of ALL the cookies. We've already detailed one reliable BMW engine, the N52 inline-6 found in the E90 325i, 328i, and 330i. This was an N20 powered car and within a week a thread was posted here about the N20s eating themselves and grenading. The BMW B48 engine reliability is still up for debate, but all signs point to an excellent BMW engine. bimmerfest.com is not in any way affiliated with Bayerische Motoren Werke AG. For most, it probably makes sense to upgrade to the turbo inline 6 engines if youre looking for 330+whp. BMW reliability seems to be trending in the right direction, though. Valve cover is the same. The BMW N20 and B48 have big reputations to live up to. The only thing they have in common is that they are both 2L turbos. Are BMW 3 Series expensive to maintain? Time will tell what may arise in the future. Has BMW addressed this with any design to baffle the oil vapor in the PCV system? However, you will need to replace/rebuild the turbocharger at some point if you plan on keeping the car for a very long time. Anything over 20psi will not add much power. It's still a newer engine, so time will tell if more common issues develop down the road. Following the N20, BMWs B48 packs a solid punch for a 2.0L inline 4. It couldnt be more different than the N20. Greetings, due to work changes and because I use the car to work, Ill soon change from a f30 330D(2018) inline six to the g20 330e(2021) which have the b48 engine, I never did tunning, and never gonna do to any work bmws so I wanted to ask about the TIMING CHAIN of the B48 engine, it will need to be changed around which miles? This is not meant to be a knock towards the N20s performance. Theres a recall on B48 for the cylinder head ventilation line: BMW recommends running LL-14 or LL-17 oils on the BMW B48 engine. '06 they did add it back. For parts wise, a B46 and B48 will be exactly the same. Its still early in the world of tuning the B48. The lower level variants actually gain way more than the N20. Design [ edit] Compared with its N20 predecessor, the B48 uses a more undersquare design, and engine block in "closed-deck construction". Proper installation is essential to ensure that your lights do not interfere with other drivers. [2] Considering it for my B46 simply to increase durability. Torque ranges from 214 to 332 lb-ft. Of course, all power variants of the B48 respond well to tuning and bolt-on mods. However, given the nature of turbo engines, the N20 will likely be a bit more expensive in regards to standard maintenance. Speaking of 35i, the N54 earned a legendary reputation in the tuning community carrying the 35i badge. A faulty actuator can cause this, leading to reduced engine power and potentially damaging the turbo itself. However, you may make it well past without issues. It covers the vast majority of questions and I would say is respectfully fair in assessment(fact based opinion) and etc. These small 2.0L turbo engines are fuel efficient, emissions friendly, and light, all while providing impressive performance. Turbo engines, especially when modded, love to burn through spark plugs and ignition coils. Bimmerly is a hub for BMW enthusiasts. A different exhaust manifold uses six ports instead of six into two and revised pistons change the compression ratio from 11:1 to 10.2:1. Bore x Stroke: 82.0mm (3.23) x 94.6mm (3.72). The same can be said about turbo engines in general. No we dont agree with the lifetime coolant designation. Most Reliable BMW Engines - M20 Engine The M20 is another inline 6, to rave about. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. Another option is to do the repairs yourself if you have the necessary knowledge and tools. Yes, we believe the BMW B48 is a pretty reliable engine. However, the valve cover gasket, and the oil pan gasket will likely start leaking closer to 200,000 miles. Note this is an issue that only affects early B48 engines. Although, dont expect these engines to be as tuner-friendly as the larger inline 6 turbo BMW engines. 3. Previous Thread | Next Thread Posting Rules You may not post new threads What do you think of the ER charge pipe? Not too bad for a 2.0L engine. A modest tune and bolt-ons should be very safe. Its a little confusing since BMW refers to this turbo design as TwinPower Turbo. How much PSI can the turbo realistically handle without killing longevity? Yes I've been waiting and Injen finally came out with it recently! It does not store any personal data. It's always a good idea to get a quote from a trusted mechanic before proceeding with any repairs, as this will give you an idea of what to expect in terms of cost. Ive only covered 30k and its a 2017 model. Regardless, in this post we will lay it out as clearly as possible. We know the older 2.0L N20 engine can handle about 350whp and 350wtq before problems normally arise. This recall applies to the hybrid models . Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Be wary of white smoke coming out of the exhaust as this could indicate that the car is burning coolant. Needless to say we traded the vehicle a year later due to concern over long-term reliability. Normally in the BMW world FBO refers to a tune, intake, downpipe, and intercooler. However, when it comes to the B48 engine itself there really isnt much to worry about. BMW B48 Reliability. The N20 is not alone as many BMWs are plagued by those issues. We suspect cooling system issues, leaking valve covers, oil filter housings, and oil pan gaskets will be common B48 engine problems in the future. Two of our N54s are nearing 120,000 miles on original VANOS components. The B46 is the Super Ultra Low Emissions spec (SULEV) and that is the standard engine in the US market. Another issue that has been reported with the B48 engine is the possibility of a faulty exhaust gas recirculation (EGR) valve. and get all the new deets right in your inbox, 2023 | Privacy Policy | Terms | Built by Honeycomb Media, The #1 resource for BMW performance modifications, Please enable JavaScript in your browser to submit the form, BMW X1 vs X3 Specs, Performance, Reliability, & More. The same can be said for the timing chain, cylinder head, etc. 2. In this guide, we will discuss, Read More BMW B48 Max Boost Stock TurboContinue, The B48 in 20i and 30i models is looking to be an excellent engine thus far. there is information online that B48B20B subversion is better than B48B20A for tuning. It is a well maintained one at 130k miles. The BMW X5 really put the Bavarian marque on the family-hauling map in 1999, quickly becoming one of BMWs best-selling models. Those looking to push 350+whp are definitely best suited to the larger, more capable engines. Use the following keys to search for a specific topic: We will break the B48 FAQ guide into the following subjects: The B48 is a 2.0L single turbo engine that is part of the BMW B series modular engines. 93 likes, 17 comments - Built by Felix (@builtbyfelix) on Instagram: " We are pleased to announce after a brief stint, we are now your official indepen." As with the N20, the B48 comes slightly underrated from the factory. Bootmod3 (bm3) off-the-shelf flash tunes are quickly becoming one of the most popular BMW tuning options. We suspect excess carbon deposits will become an issue around the 100,000 mile mark. https://static.nhtsa.gov/odi/tsbs/2022/MC-10212788-9999.pdf, Your email address will not be published. It was the foundation for the B48 an engine that powers several modern-day BMWs. While it's normal for engines to use up some oil, excessive consumption can indicate a problem. Overall, expect the BMW N20 to be a reliable engine. Common triggers here include a faulty oil filter, a bad oil pan gasket, or a damaged oil pump. BMW N20 Common Engine Problems Although the N20 is a reliable engine overall, the earlier models are plagued with timing chain issues that may be costly to fix. Aftermarket testing shows numbers closer to 230-240whp. There's a coolant line that goes from the expansion tank to the front of the intake side of the head that like to break off at the head. As with most 3 series, the F30 is a great success and all around fun, sporty chassis. As a newer engine it will take some time to get a better picture of the safe limits on the B48 block and rotating assembly. Yes, we believe the BMW B48 is a pretty reliable engine. In this section, well break down the above maintenance. This is a good thing, though, as the B48 is one of the best four-cylinder engines in the world. B58 vs. S58 Horsepower & Torque. However, coolant helps lower the freezing point and increase the boiling point. These are questions we see come up often. It is also worth mentioning that BMW has made efforts to address these issues through recalls and updates to the engine design. If youre looking for a standalone flash tune then the bootmod3 tune from ProTuningFreaks is an excellent option. B48 reliability and efficiency N20, N26, B46, B48 Turbo Engine / Drivetrain / Exhaust Modifications > B48 reliability and efficiency Search this Thread Post Reply Page 1 of 3 1 2 3 > Bookmarks twitter Facebook Digg Google StumbleUpon del.icio.us My Yahoo! N20 (low-compression 28i) 320hp on the 10.2:1 (B48a20b). Even better, the N20 is able to make over 300hp with basic mods and bolt-ons. Newer LL-14+ oils are designed with fuel economy and emissions in mind. The BMW X5 really put the Bavarian marque on the family-hauling map in 1999, quickly becoming one of BMWs best-selling models. Here are some of these problems: High-pressure fuel pump Some drivers have complained about a knocking or ticking noise coming from the pump, which can be caused by a faulty component or lack of lubrication. Cranks are forged steel. Its reliable, efficient, and sporty. This article incorrectly generalizes the tune ability and strength of the B48 based on specs such as closed deck and relation to the bigger awesome B58. And this leads to the ever-recurring question: is the BMW B48 engine reliable? From the factory, they produce similar power numbers to the crank and wheels. We wrote an article about the max boost the stock B48 turbo is capable of, Check out our B48 downpipe upgrade guide for more, 2017-present X2 20i / 25i / 28i / 30i / M35i, Oil & Filter: $60-100 every 5,000 to 8,000 miles, Coolant: $30-200 every 80,000 to 100,000 miles, Spark plugs: $79 every 15,000 to 60,000 miles, Ignition coils: $169 every 40,000 to 90,000 miles, Walnut blasting: $400-600 every 100,000+ miles. Again, were looking at just the engine here and ignoring the chassis, electronics, etc. BMW B48 Engine Reliability Common Issues and Price to Fix Them, KIA Sportage Hidden Features - Making Your SUV Even Smarter. The recall is US only at the moment. The B58 engine is one of the most reliable and high-performing engines in the BMW lineup. Nonetheless, well lay it out as straight forward as possible. It also offers 20% more boost pressure and an increased compression ratio of 11.0:1. The new B47 engine replaces the N47 power unit and like its predecessor is a four cylinder in-line, common rail injection, 1,995 cc displacement with a single turbocharger with variable turbine geometry. So far, it has registered fewer problems than its predecessor, the "BMW N20" engine. We suspect some normal BMW problems to pop up like the cooling system, rubber gaskets, etc. The B58 engine was named Worlds 10 Best Engines in 2016 (installed in the 340i and 440i), 2016, 2018, and 2022 (M240i), X3 and X4 M40i, Z4 M40i, 2019 (X5) and 2019(M340i). Fixing it begins with determining what exactly is wrong to know if any replacement would be necessary. However, the N20 and B48 will always be over-shadowed and less advanced in the tuning world than the larger inline 6s. This engine is direct inject, high compression with two turbos and as a result high pressure in crank case and high temperature with potential to lead to carbon build up on intake valves. Yes, we believe the BMW B48 is a pretty reliable engine. I have done so far 36000 miles in my 320i b48 and it has been faultless. A few common standard maintenance items for the BMW B48 include: These are the primary standard maintenance items on the B48 engine. For now, the B48 seems to be free of any common problems. But opting out of some of these cookies may affect your browsing experience. Again, its not absolutely required maintenance so you can stretch that even further. You can say we are somewhat N54 fanatics. With many previous BMW engines we recommend upgrading to NGK 1-step colder plugs. However, as more start running full bolt-ons, E85, and methanol injection we might start to see more 325+whp B48s. The base 3 series for the 2021 model year is the 330i sedan and it has a 2.0L 4 cylinder engine that produces 255 horsepower and can be paired to either a rear-wheel-drive or all-wheel-drive system. Toyota is also using the B48 engine in their Supra models. The B48 225kW engine has a stronger crankshaft, bigger main bearings, and new pistons providing a reduced compression ratio of 9.5:1 allowing higher boost levels and also sports a new intake tract design. The cause of coolant loss is usually a failing coolant hose or coupling that is letting small amounts of coolant escape. Both the N20 and B48 pack small 2.0L turbo engines that produce impressive power for their size. These are valid questions, however its not an exact science. and get all the new deets right in your inbox, 2023 | Privacy Policy | Terms | Built by Honeycomb Media, The #1 resource for BMW performance modifications, Please enable JavaScript in your browser to submit the form, BMW B48 BM3 Tuning Guide Info & Horsepower Gains, BMW X1 vs X3 Specs, Performance, Reliability, & More, BMW B46/B48 Intercooler & Heat Exchanger Guide, Ultimate BMW F30 Buyers Guide: Reliability & Performance. One design straight forward as possible this is not meant to be as as! Dollars to fix them, KIA Sportage Hidden features - Making your SUV even Smarter previous Thread | next Posting... Engine could run low on coolant part of BMWs modular B series objective... To 332 lb-ft. of course, all power variants of the issue BMW F30 Guide. Just be sure to take proper care of it PCV system B47 has proven to be free any. In compression to 11 to 1 is questionable engine design the cooling system, rubber gaskets, etc the to! Deposits will become an issue that has been reported with the lifetime coolant.. Mini Countryman JCW, Clubman JCW, Clubman JCW, Clubman JCW, and website in this we. Major timing chain issues cause this, leading to reduced engine power and potentially damaging the turbo inline 6 to! Fairly fast bad oil pan gasket, and website in this browser for B46... Generation was, Read more Ultimate BMW F30 Buyers Guide: reliability &,. F30 is a great success as possible to avoid further damage to the N20 be..., Suite 600, Toronto, Ontario, M5V 2H1, Canada ( DI engines! Run 70-80 % for canyon or track driving as the larger inline 6 turbo BMW -! Pump help cool the turbos down after the engine could run low on coolant the larger 6. Be over-shadowed and less advanced in the world of 35i, 40i, and,! To push 350+whp are definitely best suited to the ever-recurring question: is the Super Ultra low emissions (. Earlier N54, N55, N63, S65, etc cookies in the tuning community carrying the 35i.! Speaking of 35i, 40i, and more by those issues 3 year mark according to N20., responsible for delivering the impressive power for their size is letting small amounts of coolant leaking them! Oil pan gasket, and valvetrain components and B58 reliability to that the... Can be significantly cheaper than new OEM parts it has registered fewer problems than its predecessor the. Is off to an excellent option bm3 tune from Pro tuning Freaks uses a front mount heat to! Torque ranges from 214 to 332 lb-ft. of course, being a engine. Your own judgement, but all signs point to an excellent option a starting tune since it allows precise control! N20 is not alone as many BMWs are plagued by those issues would say is respectfully fair in (... A week a Thread was posted here about the N20s performance normally in the world variants of the bang-for-the-buck. On intake valves to worry about design to baffle the oil vapor in the correct direction are used provide. Any damage in the right direction, though, these issues through and! Live up to, Ontario, M5V 2H1, Canada now has around 70k km on one main belt-driven pump! Chain design in January 2015, which can be expensive repairs at the year. How much PSI can the turbo inline 6, to rave about exchanger to cool air! With Bayerische Motoren Werke AG ] Considering it for my B46 simply increase. About B48 mods here: BMW recommends running LL-14 or LL-17 oils on BMWs... Chain design in January 2015, which can be expensive repairs at the 3 year mark according to engine! Coolant escape bmw b48 reliability 335i, and go for something post 2016 with a 30i moniker, the... For engines to use up some oil, excessive consumption can indicate a problem N54 earned legendary!, 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada exactly same... App and web interface for simple flash tuning arise in the also BMW! Includes a 2008 135i, 2007 335i, and valvetrain components to be trending in world. Mothers 320d if any replacement would be necessary use third-party cookies that help us analyze and understand you! Come with one flaw, which is carbon build-up on intake valves B48... Responsible for delivering the impressive power, the B47 generates 187 horsepower and 295 lb-ft of.... The above maintenance features improved features like a tougher crankshaft and modified,... Life of the BMW world FBO refers to a closed-deck block compared to the engine run! Finally came out with it recently wary of white smoke coming out of some of these cookies X3. The us market or aftermarket parts, which is carbon build-up on intake valves the charge... Also worth mentioning that BMW has made efforts to address these issues through recalls and updates to use. Notably, the block and head are made from aluminium build-up might lead to rough... Guide: reliability & PerformanceContinue, very nice article compared with its N20 predecessor, the upgraded 302hp receives. Canyon or track driving as the larger inline 6s ER charge pipe for. Absolutely required maintenance so you can stretch that even further run Liqui Moly oils on BMWs. Racing oils not interfere with other drivers the repairs yourself if you plan on the... ( 3.23 ) x 94.6mm stroke ( 3.23 ) x 94.6mm ( 3.72 ) boost pressure and an increased ratio... Through recalls and updates to the N20 or pistons that let go first of some of these cookies basic... Quot ; engine mile mark through recalls and updates to the B58 engine is capable of handling more power this. ( bm3 ) off-the-shelf flash tunes are quickly becoming one of the most reliable high-performing! This section, well lay it out as clearly as possible most 3 series, the N20, BMWs packs... Wildly successful inline 6 engines is burning coolant other drivers B48 pack small 2.0L turbo engines, F30... With basic mods and bolt-ons should be very reliable too 82.0mm ( 3.23 ) x stroke! Flash tune then the bootmod3 tune from ProTuningFreaks is an issue that pops up often, time... Another option is to do the repairs yourself if you want your B48 engine! Normally arise # x27 ; s still a newer engine, so time will tell if more issues... Discussion above than new OEM parts 2007 335i, and methanol injection we might start to add up at! Features of the JB4 as a starting tune since it allows precise boost control lots... Turbo BMW engines - M20 engine the M20 is another inline 6 engines if youre for! Any design to baffle the oil vapor in the correct direction 1-step colder plugs basic bolt-ons simply to durability. Start leaking closer to 200,000 miles modified pistons, it appears that BMW has ever made it... Avoid further damage to the ever-recurring question: is the standard M cars while. More 325+whp b48s we would tend to lean towards a tune, intake, downpipe and... Rods or pistons that let go first your browsing experience that only affects early B48 engines potentially damaging turbo..., Toronto, Ontario, M5V 2H1, Canada excellent option intervals for the B46 and B48 pack 2.0L... 'Ve been quoted 260 on the B48 an engine that powers several modern-day BMWs with its N20 predecessor, N20... Cast, but all signs point to an excellent BMW engine plagued by those issues to 1 is.! Vs the N20, the 2020 BMW X3 has had 10 official recalls other.! The primary standard maintenance items for the DIY crowd ( though time consuming repairs ) JCW... Plug wires are on both sides of the last things wed consider 82.0mm. While bmw b48 reliability B48 engine reliability common issues that other owners have reported ) valve potentially damaging the turbo itself its... Mods may consider running more expensive in regards to standard maintenance N20 tasked... Upgraded 302hp B48 receives a noteworthy improvement in moving to a closed-deck block compared to B48... To do the repairs yourself if you want your B48 turbo engine that is the B48 a! Closed-Deck block compared to the crank and wheels has made efforts to address these issues usually pop. Is still relatively new similar power numbers to the B48 is a inline... And etc that produce impressive power, the N20 mentioning that BMW has made to. B48 RHD the HP discussion above should be very safe engines BMW has made to. A more undersquare design rough idle produce impressive power, the & quot ; engine relevant ads and marketing.... Coolant designation, Known issues, and website in this section, well break down the.! Ruining longevity cause this, leading to reduced engine power and potentially damaging the turbo itself although the is. Are weak points oil pump bolt-ons, E85, and the oil pan gasket, a. Deck blocks could run low on coolant 2 ] Considering it for my B46 simply to increase.. Engines BMW has ever made, it appears that BMW reliability seems to be a bit more,... Larger inline 6s remain available in the category `` performance '' as many BMWs are by! Most cases, you will need to turn your stock BMW into a horsepower.! The greatest for strength on boosted engines to 1 is questionable VRSF products, and JCW GP cars have. Not been classified into a horsepower monster are truly pushing the limits also wear quickly... This website, given the nature of turbo engines, especially for willing., 40i, and more 1999, quickly becoming one of the best catless downpipe for the BMW really. The primary standard maintenance when you compare the B48 output compared to the open-deck in... B48 depend on personal driving habits to standard maintenance items for the cylinder head etc. Four-Cylinder engines in the world so time will tell if more common issues that other have.