The Mercedes-Benz M275 (and similar M285) engine is a twin-turbocharged and intercooled, all-aluminium, 60° V12 automobile piston engine family used in the 2000s to the 2010s. It is loosely based on the M137 naturally aspirated V12 sold between 1998 and 2002, and retains its SOHC, 3 valves per cylinder, twin-spark ignition layout, but differs with the addition of structural reinforcements to the engine block for improved rigidity which in turn yields greater reliability. The M275 V12 Bi-Turbo engine was modified with the addition of larger turbochargers. Several variations of the M275 V12 Bi-turbo engine have powered many top-of-the-range Mercedes-Benz and Maybach models since 2003.
M275
Bore and stroke is giving a displacement of . Power output ranges from to at 5000 rpm and to of torque at 1800–3500 rpm.
Applications:
- 2002–2005 S 600 (W220)
- 2005–2013 S 600 (W221)
- 2003–2005 CL 600 (C215)
- 2006–2014 CL 600 (C216)
- 2003–2011 SL 600 (R230)
M275 AMG
The first V12 from AMG was dubbed M275 AMG - a version, with boost pressure reaching at maximum, and uses air-to-liquid intercoolers. Bore and stroke are increased to . Output is or later at 4800–5100 rpm with of torque at 2000–4000 rpm. It uses an ECI ignition system for the two spark plugs per cylinder, which helps with combustion and to support Ionic current measurement function sequence. The top of the range variant fitted in the SL 65 AMG Black Series, which is equipped with 12% larger turbochargers, generates at 4800–5400 rpm and of torque at 2200–4200 rpm. However, due to the torque abundance to power the rear wheels, the SL65 Black is still limited to .
Applications:
M285.950:
- 2002–2012 Maybach 57 and 62
M285.980:
- 2004 Maybach Exelero
- 2005–2012 Maybach 57S and 62S
- 2009–2012 Maybach 57 and 62 "Zeppelin"
- 2011 Maybach 57S Cruisero Coupé by Xenatec
M285 AMG:
- 2005 Tramontana
- 2009 Tramontana R
- 2013 Tramontana XTR
- 2015 Tramontana S
M158
thumb|M158 engine in a Pagani Huayra
The M158 is a version based on the M275 AMG. The engine uses smaller twin scroll type turbos (for reduced turbo-lag), a bespoke Bosch ECU, a modified intercooler configuration, and dry sump lubrication. It produces at 5800 rpm and of torque at 2250–4500 rpm. The Imola variant of the Huayra uses a version of the M158 producing and . The engine is mated to a new 7-speed electrohydraulic automated manual gearbox designed and built by XTrac.
Applications:
- 2012–present Pagani Huayra
- 2023–present Pagani Utopia
See also
- List of Mercedes-Benz engines