BMW S55 vs B58

We will look out for slight differences between BMW S55 vs B58 today! The BMW S55 engine is an ultra high-performance power plant, underrated from its factory but proven in independent tests to produce 424 horsepower at the wheels.

The B58 engine is one of the latest additions to BMW’s lineup and can currently be found in models such as the M240i, 340i and X3 M40i.

Although these two engine models are commonly used in BMW  models, some differences may be a major issue for some drivers.


Since their debut, BMW twin-turbo inline-6 engines have become an indispensable feature of the tuning scene. Boasting impressive power and flexibility, these engines are beloved among BMW enthusiasts – especially S55 and B58 engines which boast plenty of potential and are easily modified.

BMW engines have earned themselves a strong reputation as reliable power plants. This is due to their superior components which allow for tuning enthusiasts’ use without issue; however, some problems may surface with modified BMW engines when their functionality has been altered; these include leaks from valve cover housing or oil filter housing as well as leaks around an electric water pump.

For BMW S55 vs B58 , reliability is not an issue where there are huge differences.

The N54 engine was widely used prior to the debut of its successor, B58. While some issues with reliability exist with it, these are relatively minor when considering overall quality of performance.

The B58 engine is an advanced and modern option that features forged crank and rods as well as a steel crank girdle that increases block rigidity. Furthermore, twin-scroll turbochargers capable of handling high levels of power allow this small engine to produce over 400whp with proper tuning – an impressive amount for such a small engine!


For BMW S55 vs B58, there is a clear performance difference. The S55 engine first debuted in 2009 and can be found in BMW 1 Series GT, 3 Series GT and 5 Series luxury sedans. It boasts over 400 horsepower in stock form; making this performance engine one that many BMW enthusiasts aspire to own one day!

The N54 engine was outstanding on its own, but the S55 is even more remarkable. A true powerhouse that can reach over 700 wheel horsepower with aftermarket upgrades and modifications installed, this BMW powertrain remains reliable even as modifications increase wheel horsepower output significantly. Perfect for anyone wanting to take full advantage of their car!

Comparative to its sister S55 engine, the B58 is more of a torque-oriented power plant capable of producing plenty of power. The B58 can deliver 443 lb-ft of torque between 1,380rpm and 5,000rpm; an impressive amount for an inline six engine. Furthermore, acceleration is as fast as with its sibling S55 while it reaches up to 7,600rpm redline redlines.

The B58 may cost slightly more than its S55 counterpart, but its added expense can pay dividends in terms of better fuel economy and lower maintenance costs. Furthermore, its lighter crank shaft makes tuning much simpler while lessening chances of carbon buildup that plagues other BMW inline six-cylinder engines.


Both the S55 and B58 engines offer performance enthusiasts modern, efficient, and powerful options that are cost-effective and efficient. While the S55 has been around longer and has many modifications available for it – making it an excellent budget option – the B58 was recently developed by BMW to power vehicles like M240i and M340i models and offers huge potential for tuning; however it may require additional maintenance than its S55 counterpart to keep running smoothly.

Both engines can be modified to produce impressive power levels, but the B58 stands out in terms of reliability. Thanks to its stronger forged block design and higher compression capacity than its S55 counterpart, this engine can handle higher compression levels without risking internal components being damaged by higher compression levels. With proper modifications this engine could produce up to 650 horsepower and 600 lb-ft of torque.

Both engines offer their own set of strengths and weaknesses, but the S55 remains the superior value in terms of performance. You’re most likely to find these engines in older cars nearing the bottom of their depreciation curve; meaning you could get one for an affordable price. By contrast, the B58 will only gain in value as it becomes more common across newer BMW models. This is an important detail for BMW S55 vs B58.


If we are exploring the differences between BMW S55 and B58 , modifications can change everything. The S55 was first seen in 2009 when BMW unveiled their first mass-produced twin-scroll turbo engine. Reliability-wise, this inline six seems bulletproof when properly taken care of; producing 473 horsepower and 443 lb-ft of torque in its higher output variant used by M3 Competition models.

The B58 inline-six engine stands out. BMW recently unveiled this modular design, and since its introduction has had time to address some early hiccups. Equipped with direct fuel injection, double VANOS variable valve timing, and Valvetronic variable valve lift systems – its modularity sets it apart.

Mods available for the BMW B58 will take it to another level. Tuning has never been simpler thanks to its lower compression ratio, bigger turbos and increased air flow capacity; when modified further the BMW B58 can easily exceed 600+ horsepower!

While the S55 offers better performance from the factory, its rival B58 provides greater value for your money. Nearing its depreciation curve’s bottom point and offering excellent performance for years to come.

Simply put, it can be said that the S55 is a high-performance engine that is commonly used in M models. On the other hand, B58 is used in some BMW models that deliver strong performance but with a broader range of applications. In daily usage, B58 is more widespread.

It depends on your usage to determine the best engine which is among BMW S55 vs B58. We examined the important differences in different issues for BMW S55 vs B58.

Juan Gibson

Juan is an automotive engineer and an avid car enthusiast. He has over 15 years of experience in the car industry. In my free time, I write blog posts about cars, models and etc.

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