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BMW B58 engine: Specs, performance and features

Learn about what BMW's B58 is and whether your car has one

a b58 bmw engine from a 3 series

BMW’s B58 is an icon among engines. Commonly found in the German brand’s performance models, it’s known for being dependable and highly tunable. 

After being named one of the best engines in the world in 2023, we thought there was no better time to find out what makes it so special. 

Overview of the BMW B58 engine 

The BMW B58 is a 3.0-litre turbocharged six-cylinder engine that produces around 300hp (depending on the car and tune) and is commonly found in some of the brand’s best models, from the X3 to the M340i. 

It was first used in the 3 Series when it came out in 2015, replacing the N55 engine. It was closely followed by the S58 in 2019 – the sportier version that can produce as much as 1,000hp. 

Being made by BMW with its history of building strong engines, it’s a reliable unit that can handle any abuse it may be given. 

a blue bmw 3 series saloon driving on a roadB58 engine performance capabilities 

Power and torque 

The total power output of your B58 engine will depend on the car. 

Power tends to vary between 286hp and 375hp for the standard B58, whereas the sportier S58 produces up to 503hp in its top-spec configuration. 

As for torque, the B58 produces between 400Nm and 520Nm of torque. 

Fuel efficiency 

While it’s got a strong focus on performance, the B58 also ensures it’s as fuel-efficient as possible with help from its turbocharger. 

This works by providing the engine with more air because more oxygen makes an internal combustion engine more efficient.  

You can expect to get anywhere from 25mpg to 45mpg with a B58 – but this will vary depending on your driving and type of fuel. 

Which BMW models have the B58 engine? 

Launching in the F30 340i, the B58 has found itself in a wide range of models. Some of these include: 

  • BMW 3 Series 

  • BMW 4 Series 

  • BMW 5 Series 

  • BMW 6 Series 

  • BMW 7 Series 

  • BMW 8 Series 

  • BMW X3 

  • BMW X4 

  • BMW X5 

  • BMW X7 

  • BMW Z4 

However, there are some other non-BMWs that benefit from the B58 such as the Morgan Plus Six, Toyota Supra and INEOS Grenadier. 

a red bmw 3 series touring and a blue 3 series saloon parked in front of a mountainHow do I know if my BMW has a B58 engine? 

If your (non-electric) BMW was made between 2015 and the present day, it’s likely to be sporting a B58 engine. Yes, it’s that common.  

Ask a specialist if you’re not sure, but we estimate nine out of 10 BMWs from 2015 onwards will have a B58. 

Read more about BMW cars