Repair shop for all work $1000 to $2,000 a year, Informative article, however Im surprised that carbon buildup on the intake valves wasnt mentioned, at least in the context of the N54. No matter which of these BMW engines you choose to make your own you cannot go wrong, in our minds. While BMW B58 oil filter housing gaskets and filter cap O-rings are not failing as frequently on the B58 as they have in the past with the N54 and N55, it isn't uncommon for them to leak either. It's always the minority of people with issues that shout the loudest. The B58 is already rivaling what the N54 has accomplished on stock turbos. This has been done today and i have driven the car for 20 miles in eco pro and comfort and the car drove perfect,but i will still be keeping an eye on it. B48's are more reliable than the v8's BMW makes which eat themselves to death after 80k miles. Engines now are far more reliable than in the past. It is a turbocharged straight-six engine. Required fields are marked*. Disclaimer: This site contains affiliate links. Enjoy your new B58! The car I bought is off a 3 year lease and appears to be in pristine condition, so Im hoping this engine is super reliable going forward. Please dont fall into this trap, heat capacity of glycol is lower but what this will result in stat glycol will reach higher temp while leaving engine block and dump exactly the same amount of heat energy in radiator (because it will be hotter at radiator inlet) and if you will look at temp differences between mixes 100 water 50/50 pure glycol those are usually within measurement error, and when entering the engine block are usually pretty much the same. Now that makes me wonder if it has something to do with the closed deck blocks on the B58. Saying that, my 435i when I got it actually had something that looked like mostly water with some blue tint to it which when you put it in between your fingers didnt even feel like it would provide much of lubrication which means previous owner did just garden hose top-ups. This increases performance by. Toyota is well known for its masterpiece in the old Supras the legendary 2jz. You can say we are somewhat N54 fanatics. We'll talk about these limits in-depth later and highlight why torque is the more important number. Haha your last comment seems to be spot on! This is where the B58's heat encapsulation system may come into play. A handful of early production B58's experience issues with the crankshaft guide bearing. Stock Power: 424 HPWorld Record HP: 1150WHP (~1350 crank horsepower!! Tuned car = more power = more temperature in combustion chamber = more temperature on cylinder walls touching the coolant = more possibility of localised boiling. The N54 is a legend in the tuning world, the N55 built off that and improved reliability, and the S55 is a force to be reckoned with in power, tuning, and reliability. If you get a downpipe and aftermarket tune youll definitely want to remove the cold start function. I just bought a 2017 April F20 M140i x drive and I am Natural coolant loss on BMW engines is common problem caused by mysconception of what coolant chemistry is. We appreciate the positive feedback! Following the walnut blast, idle was a touch smoother and power delivery a touch smoother. Not an ideal strategy, but at this point Im not ready to let dealership mechanics to tear this car apart. You can say we are somewhat N54 fanatics. Lastly, issues with waste-gate rattle were mostly resolved on the N55. B58 engine reliability BMW engineers were able to resolve the main issues with the engines that preceded the B58, including: Updating the fuel system Modernizing the cylinder head They fixed issues with the particulate filters A fresh design for the timing chain Peak power at just around 16psi. Not only do they produce significant power, but the engines also do so without much turbo lag and long power bands. We recommend changing the oil soon after this occurs. However, fault codes will help point you in the right direction. **Ranks are as compared between the four turbo, inline 6 engines**. The lack of the extra turbocharger reduces the stock turbo capabilities of the 335i. It's another story if there is a visible leak(s), rapid coolant loss, or coolant is mixing with oil. Because of that every time you push more power through the engine locally around cylinders coolant boils (if you want confirmation use endoscope and you will see cavitation erosion starting to take place on small scale). Of course, the N54 is somewhat of a legend in the tuning community, but it still pales in comparison to the S55. This applies to coolant hoses and coolant connecting flanges. The rough idle is a symptom of the VANOS solenoid. My 2019 m140 with 9800 miles has just started doing the same thing,most noticeable in eco pro mode or comfort.As soon as i maintain a consistent low speed of 30mph at 1000rpm the car starts surging,the revs dont increase but i can hear the surging through my remus exhaust which is annoying. https://www.bmwblog.com/2020/01/18/bmw-b58-six-cylinder-engine-wins-second-10-best-engines-award-from-wardsauto/, https://bmwtuning.co/the-4-most-common-bmw-b58-engine-problems/, https://www.youtube.com/watch?v=lbc4Hs-G9Rc, https://www.autoblog.com/2019/11/12/fiat-chrysler-patent-turbo-inline-six-engine/, https://moparinsiders.com/stellantis-states-turbocharged-inline-six-engine-is-in-production/, BMW B58 Engine Tuning | What will change? Although the B58 uses similar rubber VCG's, the engine has one advantage. Which engine is more reliable, the N55 or the B58? Ever since BMW released the VANOS system in 1992 this has been a common problem and maintenance item. There really should be no such thing as natural coolant loss. Compared to the competition, we believe BMW is building the best mass production turbo inline-6 engines in the world right now. About other part of your comment. Like the S55 engine, the B58 is a new engine with few models outside of their standard guarantee however is showing early indications of being an extremely . Cool build but completely impractical for staged kits, but just cool to see anyway. The BMW B58 engine is a turbo 3.0L inline-6 that was first introduced to BMW models in 2016. Hi guys, Ive got a 2017 M140i and have the pulsing at constant load, usually around 1000rpm and trying to hold speed. . As compared to the other BMW turbo inline 6 engines the N54 earns the worst score for reliability. Whats your thoughts on this? Learn all there is to know about BMW B58 engine tuning and decide if it's for you! Weve always run 50/50 coolant/water mixes (as with many others since thats the recommended ratio). But sometimes, my engine just doesnt want to start. Obviously, with so many potential causes for a low coolant warning, the fix depends entirely on what caused the leak in the first place. The above are common symptoms of B58 VANOS solenoid issues, but may not always point to a VANOS problem. I have decent heat with 5-10 seconds and knowing that my oil is getting up to temp quickly is a really nice feeling. Thanks for the clarification and reply. 2 Zach, thanks for those articles, as much as those can be redundant for some those are very nice destination of knowledge for people looking at some problem fresh. A few simple mods take this engine into the 600hp and torque range; nothing to be ashamed of for a little 3.0L inline-6. Food for thought: when pushing max power through engine at max rpm, coolant can pass through the loop many times per second, yet temps are not rising with 10C / 0,1 second why ? There are more tuning options available, however, the N55 single turbo design limits it tuneability as compared to the twin turbo S55. The engine room is simply too full with views inaccessible. Im new to all of this. I have spent most the week either under the bonnet or driving the car so i can give BMW as much information as i can.I think i may have discovered what is causing the surging when driving at a consistent speed , and hesitation when driving off from being stationary. I have a 2011 335 x drive manual that I love. However, it wasnt as drastic of an improvement as some say. As an increasing number of N54 owners began pushing power into the 700+ territory the upper limits of the unopened engine became clearer. The B58 has proven to be the most reliable modern BMW engine, perhaps as reliable as the naturally-aspirated N52. According to my best measure it is about 250ml/1000 Km. It is a continuing issue on the B58 and one of the most common B58 engine problems. Bit of methanol injection will help keep your intake valves cleaner. Great point regarding walnut blasting. Considered my car is stage 1 tuned. The ML variant makes 335hp while the OL features a staggering 382hp. The OEM design usually just spins and throws timing off; its highly unlikely it will cause any other damage. Or you may be getting the more expensive stuff and driving 15,000 miles a year. In 2010, the 335i received the updated N55 engine followed by the B58 in 2016, however, the model was rebranded to the 340i. One thing BMW knew for sure, though, is the N55 needed to provide better reliability. The TU1 update is mostly intended to improve emissions. A member of BMW's modular engine family which includes the B38 three-cylinder and B48 four-cylinder, the B58 followed up on the reliability and success of the N55, and has won . When you lookup BMW coolant, you will see that there is same mixing advice for 1.6 non charged 80bhp mini cooper for Canada region and M3 for UAE region. Copyright 2021 - 2023 BMW Tuning LLC. Most B58 owners will have a trouble-free ownership experience and spend less on maintenance than if you were driving a N55-powered BMW. From day one of delivery, I have often smelled coolant. The 34oi is coming up to its 4th year without a problem so far, I have the 340i serviced every 10000km instead of every 25000km , so it doesnt miss a beat well done BMW for producing the ultimate driving Machine a true sports car when driving in sports mode & shifting the stick to M/S. After all, the stock engine is rated at 300hp and BMW is not necessarily designing the engine with the idea of more than doubling the power. Did this fix the problem? If possible, How much would it cost? Was stock. Open-deck blocks and cast pistons are not great at handling extreme boost pressures for long periods of time. Lets look at both engines in detail to find out why the N55 is not as reliable as the new B58. My car is going in to BMW on Thursday. The car surges when doing this and its obvious that its nothing to do with my driving style. B58 Reliability: I hear it will be good long term. Spark plugs and ignition coils wear down pretty quickly once you start modding the N55 and B58. Just remove all the plastic covers and you can get your hand back there. Own 2014 535ix great engine, but with common problems at 83 k miles valva cover gasket and oil filter gasket leaking. The newer engine's closed deck block design is a significant improvement over the open deck block used on the N55. We've seen some VANOS problems with the B58 engine. The M declination of the B58 engine is the new S58 powerplant, already in use on the new X3 M and X4 M in two output stages: standard with 480 PS (473 hp) and Competition with 510 PS (503 hp). Required fields are marked*. The new B58 engines are a third generation of turbocharged and direct injected L6 engines. So much too learn, so little time. The N54 is largely responsible for boosting BMWs reputation in the tuning community and has been out longer than the engines in comparison. Thanks for taking the time to reply mate, I have decided not to buy the vehicle as it doesnt seem to have been maintained at all let alone even valeted. Forums will be full of "issues"! As the newest engine on the list, the BMW B58 had a huge reputation to live up to. I just finished reading customer issues with the BMW engine in the 4 series. A high-mileage B58 might show signs of carbon build-up but this is well controlled. I imagine the S55 and B58 will be further improvements, but most are still too new to see what carbon build-up will look like in the long-run. And thats the N54 which is regarded as one of the less reliable BMW engines. Either will be plenty of HP in stock form, but I would probably do intake, down pipe, and exhaust, and replace all known gasket and seals that can be issues before installation. BMW B58 Reliability. Appreciate any thoughts! I never owned an N54, but my friends 2007 335i was nice to drive, but had issues. It makes hellcat owners cry all day, every day. I have a 2011 535i M Sport with 200k miles. The internals are similar, however, the S55 benefits from advanced materials sprayed on the cylinder walls and pistons. Improvement of Valvetronic - VVT4 with reduced height. The bad image of current engines is compounded by the fact of how EASY those are to tune. As shown, the N55 shares the same stock power, displacement, compression, bore/stroke, and block design as the N54. It also comes down to each specific engine. should i stay away? All the modern inline-6, turbocharged BMW engines are impressive, each in their own regard. Bam, 45min to an hour for the whole job. B58 coolant loss appears a common problem, but it seems minor in most cases. Great article BTW. Yes, coolant lowers the freezing point and raises the boiling point. The cost $60-$65 each and get a few spare clips. The B58 is a great engine, but the S55 is better. Rear mounted VANOS and timing chain. Im looking for my first sports car and BMWs seem very nice. Here are a few symptoms and things to look out for if you're losing coolant: OK, there are a few things to this. Two of our N54's are nearing 120,000 miles on original VANOS components. It can trap heat for up to roughly 36 hours. Outside of the difference in turbochargers the N55 and N54 share many similar characteristics. f34 130k miles (tuned about 30% up only intercooler upgraded) Ive switched off the traction control and done about 100 miles(20mph/30mph/50mph/up hills and the car hasnt surged once. Copyright 2021 - 2023 BMW Tuning LLC. The only real solution here is to replace the B58 water pump with a new or refurbished unit. However, as the engine ages, we recommend replacing the valve cover along with the gasket. Hi the B58 is not the same engine as M4 M4 is S55. Disintegrated oil filters pop up frequently, but are not serious in most cases. The B58 is not showing the same flaws seen in the early years of the N55. Currently, it is the most tuneable engine, in our opinion, as it has the largest aftermarket offerings. The VC is prone to cracking and leaking, too. My car has been lowered with Bilstein shocks and drives like a dream. We think the Supra carrying the B58 helps the platform a lot, too. Perform oil changes every 5,000 to 8,000 miles. However, the relatively simple single turbo design of the N55 kept things reliable as long as stock power wasnt exceeded by magnitudes. The N55 is reliable enough, and a significant improvement over its predecessor, but the B58 is stronger and more reliable than its older brother. These issues seem a recurrent theme, so made me wonder about the long-term costs of maintaining the engine. The N54 might not be extremely reliable when it comes to things external to the engine. Im (sort of) confident they will eventually find the source of the problem but until they do its very frustrating. Since the initial release of the BMW N54, the engine has gained quite a positive reputation in the tuning community. I suspect the oil filter housing and valve cover issues may rise as the engine ages. The N55 has proven to be a reliable engine but is edged out by the B58. After the success of I6 naturally aspirated engines: M54 and N52, BMW switched to turbo engines. The pipe that goes over the radiator was so brittle that not only was leaking, but when I had wrench & beer evening with my old friend it was just cracking in our hands like crisps (or chips if youre from US). This is a misconception. Just purchased a 2021 M340. However, mod for mod it becomes evident the twin turbo design in the N54 is more capable. N55 is better than the N54, but its just a reliability upgrade. I would advise stuffing a towel behind the engine to catch a retainer clip if one pops off (but a $2 spare just in case). With that being said, there are some shared issues between the three engines, like VANOS solenoid failure and oil filter issues. 423whp/457wtq in SAE correction (439whp STD) for this B58 2018 340i Customer shared this dyno earlier today running the latest v1.6 Stage 2 93 octane (98RON for those in Europe) OTS map. The N55 and B58 are similarly designed 3.0 inline-6 single turbo engines. I do love a straight 6. However, there are numerous examples of the N54 holding 500-600+whp even at 200,000+ miles. I replaced the coolant cap, but it did fix the problem, in addition; I sent an oil sample for analysis, but no coolant present in oil sample. Its that sad with bmw. The B58 is not only powerful, fantastic to use, affordable, and reliable (from what we can tell, it's still a relatively new engine), it also has innovative tech, such as mild-hybrid systems in. There are a few notorious issues in the N55. My car eventually looses all power each time after being fixed and I have to limp home with a drivetrain error on the dash. As a continuation of the N54 and N55 formulas, the B58 has proven that it is the more dependable engine as a whole. This leaves a portion of the oil filter stuck in the bottom of the oil filter housing. Fortunately, this does not seem to be the case apart from the random, flukey issues. The cap leaking does seem to be a part of the cause. BMW replaced it under warranty as one would expect. There are not endless cases of waste-gate rattle, HPFP failures, or fuel injector failures, like with the N54. Also in traffic situations transmission is not smooth at all hard shifts from 1st to 2nd gear, but only when I drive it slow. Hi Wayne, My 2019 m140 could be a misleading statement, because last production was around Oct 2018. DIY everything $300 to $750 a year Many of these issues were resolved or mitigated through recalls and extended warranties. Some owners are reporting coolant losses in the main tank and possibly in the second tank. Hopefully, it's not as bad as the below image. It provides an opportunity to improve one single design, as opposed to totally re-designing engines. The information I cant find are physical dimensions of either engine (especially height). Steph Papadakis and his boys are making 1000HP @ ~42psi on a 2020 Supra B58. Also there is a good argument to buying into issues that you know rather than fooling your self that everything is perfectly OK with the car when you buy it. Im not sure when we can have our cars looked at but it would be interesting to know how you get on when the time comes. The B58 uses two solenoids. Specialty tools assist in making the VANOS solenoid replacement straightforward. Be on the look-out for more of these issues to pop up in the coming years. Hello and thanks for the great article! Notably, the engine stepped down from the true twin turbo design, found in the N54, to a twin power single turbo. BMW Reliability Most Reliable BMW Engines. Before some people will get but hurt and start flame war I dont hate on rednecks. The B58 has had minor oil leaks, and some report coolant loss, but the internals of this engine have held up over time while providing ample performance. Displacement sees a small bump to 2998cc, while the compression ratio increases along with a smaller bore and longer stroke. Our garage currently includes a 2008 135i, 2007 335i, and 2008 535i. Someone knows what is due? Washed my hands with it and looking forward to my next car (not BMW). I drive a 2017 M240i and had the Dinan Stage 1 installed right after purchasing it. [youtube=https://www.youtube.com/watch?v=WzgzSnYDvz4&w=660&h=372]. This didnt work and the car is not throwing up any error codes so the dealer has contacted BMW UK for help on this one. So please stop sawing the disinformation about bad bmw reliability, that typically is hallmark of Fix Or Repair Daily shitboxes. I traded that in for the current 540i with the b58, and tuned its a beast. Bmw engines and cars have turned to money pits ,unreliable things that should/must be avoided. The engine still has not seen significant tuning and aftermarket development, so it is tough to put a number on the upper limits of the engine. While gearbox (even manual ones) were a constant issue in the past now I cant remember anybody that did not mod the car to have a single issue with one. Sometimes, B58 coolant loss can be dependent on other things as well. . You can indeed tune an M340i without voiding warranty. Cant wait to compare the BM3 to the Dinan Stage 1. This was a great article. Now, we left out some potentially promising information. DIY the basics (oil, brakes, spark plugs, etc) $500 to $1,200 a year B58 water pumps are known to be troublesome and have even been reported to stop functioning as early as the 5,000-mile mark. Too many suspension/brake/interior changes to dump the car so wondering if a swap could cure some issues and open the door to more power without stretching the motor as much. Your comments are welcomed. You can get old one with slowmo (really helps) for about 100 quid. I had the 4.2 I6 in both my 1975 Landcruiser (FJ40) and my 1978 Jeep CJ-7. Dont hesitate to pack those with even more detail ! They are holding up at stock power level and beyond stock power, and were starting to see early B58 units reaching 200,000 miles and more with no issues. Hi mate,thanks for your reply. Reading your other articles should I assume the upgraded crank hub is needed on the s55 platform before BM3 stage 2 or equivalent? B58 is reliable, bulletproof and can handle hella boost on stock block. Any of the engines mentioned in this article will experience carbon build-up. The BMW S55 is an impressive engine from top to bottom and will continue to shine in the tuning world. . Did BMW live up to that reputation? Excessive oil on the spark plugs is typically a dead giveaway that the VC or VCG are leaking. Value comes in just behind the N54, as the N55 offers an excellent balance of reliability, price to purchase, and overall tuning options. Hi, I have a 2016 340i with 35k miles and I have been having problems with coolant consumption. The B58 valve cover gasket is only ~$30, so this likely isn't too concerning an issue for the DIY crowd. Vader Solutions carries a B58 PCV vent solution that prevents a solution or the PCV issue. Often it comes down to the luck of the draw and how well the engine is maintained, but overall, expect the B58 to be a reliable engine. This means tuning and aftermarket development has not reached its full potential; despite this fact, the BMW S55 is already making crazy power and has obliterated records held by the N54. Inline 6s are well known in Australia. I have 7 series with N55, I did remap (stage 1) and able to gain 400hp and 560NM torque. Could you give me some advice about this problem? Reliability scores the highest marks compared to the N54, N55, and S55. what a great site you have! My 2017 M240i with 27,000 kms is suffering from the same symptoms. Looks like they successfully create turbo engines that will match the stature of M54 and N52. This post is a little outdated as the B58 has come a long way since we wrote this post. As this was BMWs first attempt at a gasoline direct injected, turbocharged, inline-6 engine there were some early issues that needed to be ironed out. Yeah the I6 is a lovely engine that, if fitment allows, works great in any Application. Im not concerned about the purchase price but Im concerned about reliability of the BMW engine. Stupid technicians, or cheap skates that mix coolant with distilled water cause cooling system boiling point to fall. Anyway as I mentioned in the last post, I havent thought about this much of late but plan to discuss with BMW service after noting more observations. One of our N54s went 113,000 miles before its first walnut blast.

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