The s54 engine’s Distinctive Power Output One of the defining characteristics of the s54 engine is its impressive horsepower and torque delivery. Known for revving up to 8,000 RPM, it provides a unique driving sensation that few engines can replicate. The s54 engine produces a smooth yet aggressive power curve, making it a top choice for enthusiast cars like the E46 M3 and Z4M, where precision and excitement are key.