Engine Information

BMW · Engine information · U.S. & Canada S68 4.4 twin turbo · V8 power with electric assistance The S68 combines a hot-V twin-turbo layout with electrification. Mild-hybrid and plug-in-hybrid models use the engine differently, so the V8’s own output must be kept separate from the combined drivetrain figure. S68 · BMW XM 4,395 ccDisplacement…

BMW · Engine information · U.S. & Canada S58 3.0 twin turbo · M power with serious thermal control The S58 combines two turbochargers with a rigid closed-deck block and a cooling system designed for demanding use. The engine family spans several M models, with output and torque limits tailored to each drivetrain. Photo: Steste8;…

BMW · Engine information · U.S. & Canada B46 2.0 turbo · Modular design, emissions-focused detail The B46 combines a strong midrange with BMW’s modular four-cylinder design. Its emissions equipment and technical updates matter just as much as the 30i badge when identifying the engine and its controller. BMW B46 · 2020 330iGold Pony ·…

BMW · Engine information · U.S. & Canada B58 3.0 turbo · Smooth torque, precise control The B58 pairs the natural balance of an inline-six with a single twin-scroll turbo. Its closed-deck block and liquid-cooled intake charge support effortless road performance, but the technical update changes more than the power figure. B58 2,998 ccDisplacement 320–382…

BMW · Engine information · U.S. & Canada B48 2.0 turbo · One family, several distinct versions The B48 is more than a single 2.0-litre specification. Longitudinal 30i engines and transverse M35i versions use different installations, output levels and controllers, making the full engine code especially useful. Photo: Thilo Parg / Wikimedia Commons · CC…

BMW · Engine information · U.S. & Canada S55 3.0 twin turbo · Built for sustained performance Two turbochargers, a closed-deck block and dedicated charge cooling give the S55 its broad torque and sustained pull. Output depends on the model, while the familiar MEVD17.2.G name hides substantial calibration differences. S55 · BMW M3 2,979 ccDisplacement…

BMW · Engine information · U.S. & Canada N20 2.0 turbo · Four cylinders, broad torque The N20 delivers its strongest everyday punch low in the rev range. A twin-scroll turbo, direct injection and variable valve lift give this compact four-cylinder the response that made it a staple of BMW’s 28i models. N20 1,997 ccDisplacement…

BMW · Engine information · U.S. & Canada S63 4.4 twin turbo · Cross-bank exhaust, M response The S63’s cross-bank exhaust arrangement feeds its twin-scroll turbochargers with carefully separated exhaust pulses. Its revisions span several generations of M cars, bringing different injection systems, controllers and power levels. Photo: Matti Blume / Wikimedia Commons · CC…

BMW · Engine information · U.S. & Canada N74 Twin-turbo V12 · Quiet delivery, deep reserves The N74 combines V12 smoothness with strong low-speed boost. Its 6.0- and 6.6-litre versions use different generations of electronics, with a dedicated controller for each bank and substantial changes in the M760i update. Photo: Olaf Kosinsky; edited by Wikisympathisant…