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The N54 engine is one of BMW’s most celebrated powerplants, known for its twin-turbocharged inline-six configuration and exceptional tuning potential. Introduced in the mid-2000s, it marked BMW’s first mass-produced twin-turbo gasoline engine. Featuring direct fuel injection and a robust internal design, the N54 engine delivers smooth power delivery and strong midrange torque. Its ability to produce significant horsepower gains with minimal modifications has made it a favorite among performance enthusiasts. Despite requiring attentive maintenance, the N54 engine remains highly respected for blending refinement, responsiveness, and mechanical strength.