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►While the BMW N54 is one of the most capable, sought-after engines in the marketplace, they’re not without their faults. Here’s a complete guide on why they’re so popular, what to look for when buying one, and what could go wrong in the future. 

When you think of robust straight-six engines that have the potential to make a lot of power, what do you think of? The Toyota 2JZ and the Nissan RB26DETT might be what first comes to mind. Back in 2006, BMW launched itself into this category with the release of the N54 engine. Found in numerous BMWs for over a decade, the N54 has become one of the most popular engines that BMW has ever produced.

The N54 is a twin-turbocharged, direct injection engine, and from the factory, it made 300HP/300TQ at only 8PSI. With a simple ECU flash/tune, you can make around 380HP and around 400lb-ft of torque. Since this motor shipped with forged internals, a few mods can reveal insane power. With an upgraded twin-scroll turbocharger and a few bolt on modifications, an N54 can put over 700HP to the wheels. Check out Chad Rose's driveway-built 335xi that should be running in the 10's this season for a good example of this.

Almost all of the common issues related to the N54 aren't due to the actual engine itself; instead, they're almost always focused on the accessories. You'll seldom read or hear about spun rod bearings or timing chain failure, that is unless the car was running incredibly high boost or was improperly tuned. 


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