Does the 2018 BMW 340i Have a B58 Engine? Expert Analysis

For drivers seeking refined power and efficiency, the 2018 BMW 340i stands out—especially regarding its powertrain. A common question is whether this model houses the B58 engine, a benchmark in BMW’s inline-six lineup.

The 2018 BMW 340i does not come equipped with the B58 engine. Instead, it typically pairs with the B38B44 inline-six or the B58’s close relative, the B58-derived B58L, though the actual B58 (B58L) is primarily found in higher-tier models like the 340i M50i or 3 Series. The B38B44 delivers the smooth, responsive performance expected in the 340i, offering excellent fuel efficiency and driving dynamics.

The B38B44 engine in the 2018 340i delivers 253 horsepower and 248 lb-ft of torque, delivering seamless acceleration and refined cruising. While not the B58, it maintains BMW’s signature balance of power and efficiency, making it ideal for daily driving and long trips alike.

The B58’s reputation as a high-performance, compact inline-six often leads to confusion with models like the 340i’s B38B44. Though both are part of BMW’s six-cylinder family, the B58 is engineered for luxury sedans and performance models, not entry-level luxury sedans like the 340i. Thus, while the B58 represents BMW’s top-tier inline-six, it’s not present in the 340i.

While the 2018 BMW 340i does not feature the B58 engine, it delivers outstanding performance with the B38B44. For those seeking B58-level refinement, pairing the 340i with a genuine B58-powered model may offer a more motorsport-tuned experience. Research your ideal variant to match your driving needs—efficiency, power, or luxury—with precision.

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 BMW 340i, the first to boast the B58 engine, marked an exciting new chapter for the 3 Series. The straight-six engine delivered a peak power output of 320 horsepower and 330 lb-ft of torque, a significant leap over its N55-powered predecessor, the 335i.

Comprehensive technical specifications and detailed documentation for the 3.0L inline-6 turbocharged engine (B58) used in the 2012-2018 BMW 340I. Includes engine performance data, torque curves, fuel system details, cooling system specifications, and maintenance guidelines. The B58 engine, which is found in the 340i and 440i, was designated one of the world's ten best engines in 2016, in 2018, in 2022 (M240i), in X3 and X4 M40i, in Z4 M40i, in 2019 (X5), and in 2020 (M240i) (M340i).

twitter Facebook Digg Google StumbleUpon del.icio.us My Yahoo! Learn about the BMW B58. Frequently asked questions.

B58 general info, maintenance, problems, tuning and more. BMW B58 240i, 340i, 440i FAQ. How many miles will the B58 engine last in your 3-Series? Your BMW engine is going to last quite long if you maintain it properly.

The M340i engine has quite a decent displacement and isn't over-boosted, it was updated in 2018 to solve the problem of the complicated timing system with two chains. Understanding the BMW M340i Engine: Model Years and Variants The BMW M340i (G20 generation) was introduced in 2019 as the high-performance variant of the 3 Series, replacing the previous 340i model. Unlike the standard 330i, which uses the four-cylinder B48 engine, the M340i features the more powerful B58 inline.

The B58 engine was named World's 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). The S58 engine, which was released in early 2019, is the high performance version of the B58. The BMW B58 engine is a 3.0L inline-6 turbocharged powerhouse that has garnered acclaim for its performance and modifiability.

BMW knows they made something special and are using the B58 to its maximum potential. BMW has put the B58 engine in almost all of their models including the M140i, M240i, 340i, 440i, 540i, 640i, 740i, X3 M40i, X4 M40i, X5 40i, X6 40i and the X7 40i. As you can see.