Engine Information

BMW N55 in a compact guide: 3.0-litre inline-six specifications, engine variants, U.S. and Canadian vehicles, ECU families, and practical maintenance points.

BMW · Engine information · U.S. & Canada N63 4.4 twin turbo · Know your technical update The N63 puts its turbochargers inside the cylinder-bank V for compact packaging and short exhaust paths. Four major versions bring meaningful changes to valve control, injection and electronics—so “N63” alone is only the starting point. N63 4,395 ccDisplacement…

BMW · Engine information · U.S. & Canada N57 3.0 diesel · Six-cylinder refinement, substantial torque The North American N57TU delivers 413 lb-ft through a single variable-geometry turbo. Its smooth inline-six layout suits long-distance driving, while precise fuel control and exhaust treatment are central to keeping it performing correctly. N57 technical-update engine 2,993 ccDisplacement 255…

BMW · Engine information · U.S. & Canada S65 4.0 V8 · Eight throttles · 8,400 rpm The S65 makes its power through engine speed. A short stroke, eight individual throttles and an 8,400 rpm redline give the E9x M3 a crisp, progressive delivery that builds all the way to the top end. S65B40 3,999…

BMW · Engine information · U.S. & Canada N47 2.0 diesel · Strong low-speed torque, compact package The North American N47TU brings diesel pulling power to the 328d and X3 28d. Its single variable-geometry turbo and common-rail injection work with a sophisticated emissions system, all coordinated by Bosch EDC17 electronics. N47D20 1,995 ccDisplacement 180 hpFactory…

BMW · Engine information · U.S. & Canada N54 3.0 · Two turbochargers · Direct injection Two small turbochargers give the N54 strong torque early in the rev range. Piezo direct injection and double VANOS support everything from the original 300 hp 335i to the sharper factory calibrations in the 335is and 1 Series M…

BMW · Engine information · U.S. & Canada S85 5.0 V10 · Ten throttles · Naturally aspirated Ten cylinders and an 8,250 rpm limit define the S85. Its individual throttles and high-pressure VANOS system give the M5 and M6 a distinctly different delivery from a low-speed turbocharged engine. S85 V10 · Photo: Auge=mit 4,999 ccDisplacement…

BMW · Engine information · U.S. & Canada N52 3.0 · Naturally aspirated · Valvetronic inline-six The N52 combines a lightweight magnesium-aluminium crankcase with variable valve lift. Its smooth, linear delivery comes from breathing control and intake tuning, with several factory outputs from the same basic 3.0-litre layout. N52 2,996 ccDisplacement 215–260 hpSelected U.S. ratings…