BMW with B58 Engine: Power, Performance, and Reliability

Posted by Mark E.
4
Jun 23, 2025
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When it comes to luxury performance cars, BMW has always been a leader, and the BMW with B58 engine is one of its most impressive powerplants. Found in popular models like the BMW 340i, 440i, M240i, X5 40i, and Supra MK5 (Toyota GR Supra), the B58 is a turbocharged 3.0L inline-six engine that delivers exceptional power, smoothness, and efficiency.  


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Why the BMW with B58 Engine Stands Out  


1. Impressive Power & Performance  

The B58 engine produces between 335 to 382 horsepower in stock form, depending on the model and tuning. With a robust torque output of 369 lb-ft, it offers instant throttle response and exhilarating acceleration. The engine’s twin-scroll turbocharger reduces lag, while advanced direct fuel injection ensures optimal combustion.  


2. Reliability & Build Quality  

Unlike some high-performance engines that sacrifice longevity for power, the B58 is built to last. Its closed-deck block design enhances durability, while the forged crankshaft and connecting rods handle high stress. Many owners report trouble-free ownership even after 100,000+ miles, making it one of BMW’s most reliable modern engines.  


3. Tuning Potential  

The B58 is a tuner’s dream. With simple modifications like a JB4 or MHD tune, horsepower can easily exceed 400+ HP. Upgrading the downpipe, intercooler, and intake can push power beyond 500 HP on pump gas. For extreme builds, hybrid turbos and ethanol blends can unlock 600+ HP, rivalling some supercars.  


4. Fuel Efficiency  

Despite its performance, the B58 is surprisingly efficient. Thanks to Valvetronic variable valve timing and high-pressure direct injection, it delivers 25+ MPG on the highway. This balance of power and efficiency makes it ideal for daily driving and spirited weekend runs.  


Best BMW with B58 Engines 


- BMW 340i (F30/G20) – A sporty sedan with sharp handling.  

- BMW 440i (F32/G22) – A sleek coupe with refined power.  

- BMW M240i (F22) – A compact powerhouse with agile dynamics.  

- BMW X5 40i (G05) – A luxurious SUV with surprising speed.  

- Toyota GR Supra (A90) – Co-developed with BMW, offering a thrilling driving experience.  


The BMW B58 engine is a masterpiece of engineering—blending power, reliability, and tunability into one exceptional package. Whether you’re looking for a daily driver, a track weapon, or a mod-friendly platform, a BMW with B58 engines is an outstanding choice.  


If you’re in the market for a high-performance BMW, the B58-powered models should be at the top of your list. With its proven track record and enthusiast appeal, this engine continues to solidify BMW’s reputation as a leader in automotive excellence.  


Looking for a BMW with a B58 engine? Check out local listings or certified pre-owned options to experience this incredible powertrain for yourself!

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