Does the BMW M2 Have a B58 Engine? Expert Analysis

The BMW M2 has long been a benchmark in driver-focused performance, but when it comes to powertrain identity—specifically, whether it houses the B58 engine—clarity reveals a nuanced story worth unpacking.

Contrary to some assumptions, the BMW M2 does not come standard with the B58 engine, which powers the M4 and M2 Competition in its current generation. Instead, the M2 traditionally relies on BMW’s B48 inline-six, a refined and compact unit delivering strong performance with efficiency. The B58, known for its inline-six configuration and high-revving nature, is not part of the M2's original powertrain suite.

While the B58 isn’t standard, BMW has explored high-output variants; some reports suggest a potential future B58-inspired setup in future M2 models, but current production M2 cars remain powered by the B48. Enthusiasts often speculate on B58 integration, but as of now, the engine pairing remains distinct from that lineage.

The confusion often stems from the M2’s association with premium performance and BMW’s broader engine family. The B58 represents a significant engineering step, but its use in the M2 has not been realized in real-world production. This distinction highlights how even iconic models evolve without deviating from core powertrain identities.

The BMW M2 does not feature the B58 engine in its current lineup—standard M2s use the B48, a well-regarded powerplant delivering robust performance. While the B58 remains a benchmark engine, its presence in the M2 remains theoretical at this stage. For now, the M2 stands as a masterclass in performance engineering, firmly rooted in BMW’s proven powertrain heritage.

The engine in the M2 Comp is actually the old S55 unit from the BMW M4, which is now dead. What's odd is that the BMW M140i, which is an older can than the M2 Competition, actually has a new engine, BMW's B58 engine, which powers current cars like the M340i and X3 M40i. Most BMW six-cylinders, such as the new 740i and 340i, are using a new modular engine called B58.

But the M2 has a version of the predecessor engine, codenamed N55. Reason? The BMW B58 is a turbocharged straight-six engine, which began production in 2015.

[1] The B58 replaced the N55 and was launched in the F30 340i. [2] The B58 is part of BMW's modular engine family, each engine using a displacement of 500 cc (30.5 cu in) per cylinder, following the B38 and B48 engine. [3] The B58 engine was named to Ward's World's 10 Best Engines five times, in 2016 (installed.

The death of BMW 's '35i' cars has also spelled the end of the N55, with the newer '40i' models (M240i, 340i, 440i and so forth) receiving the all. This engine has garnered considerable acclaim for its remarkable performance metrics and technical prowess. Thus, it is imperative for aficionados and prospective purchasers to grasp the importance of the B58 Engine within BMW Models.

The eagerly awaited 2025 BMW M2 Coupe packs a bigger punch than ever before. Building on the success of the 2023 model, the new M2 boasts a significant horsepower increase, matching its bigger brother, the M4 Coupe. This thrill machine retains the beloved twin-turbo inline-six engine, the B58.

If you're a fan of BMW's Motorsport legacy, the newly released 2026+ BMW M2 Racing (G87) may have left you scratching your head. Why would BMW, known for its legendary straight-six engines, decide to drop a 2.0-liter B48 four-cylinder engine into a purpose-built race car? What happened to the beloved S58 inline-six found in the road-going M2 and M4? The answer isn't just engineering-it's. The B58 is capable of safely supporting higher boost levels and power outputs with minimal modification.

In addition, the B58 is known for stronger internal components and improved cooling, contributing to long-term durability. Many of the vehicles in our new BMW inventory are equipped with the B58 engine. Some of them are: BMW X4 BMW 5 Series.

B58 or N55? All times are GMT. In his latest video, Joe Achille puts his BMW M2 Competition up against an older BMW M140i, with an older engine.