Mercedes-Benz has produced a range of petrol, diesel, and natural gas engines. This is a list of all internal combustion engine models manufactured.

Petrol engines

Straight-three

• M160, 0.6 – 0.7 L (1998–2007)
• M281, 0.9 - 1.0 L (2014–present)

Flat-four

• M144, 1.3 L (1936–1937, prototype)

Inline-four

• M23, 1.3 L (1933–1936)
• M30, 1.5 L (1934–1939)
• M136, 1.7 – 1.8 L (1935–1955)
• M149, 2.0 L (1938–1939)
• M121, 1.9 – 2.0 L (1955–1968)
• M118, 1.5 – 1.8 L (1965–1972)
• M115, 2.0 – 2.3 L (1968–1985)
• M102, 1.8 – 2.5 L (1980–1996)
• M111, 1.8 – 2.3 L (1992–2006)
• M166, 1.4 – 2.1 L (1997–2005)
• М135 1.3 – 1.6 L (2004–2010)
• M271, 1.6 – 1.8 L (2002–2015)
• M266, 1.5 – 2.0 L (2004–2012)
• M270, 1.6 – 2.0 L (2011–present)
• M200, 1.2 L (2012–present)
• M274, 1.6 – 2.0 L (2012–present)
• M133, 2.0 L (2013–2019)
• M139, 2.0 L (2019–present)
• M260/M264, 1.5 – 2.0 L (2017–present)
• M282, 1.3 L (2018–present)
• M254, 2.0 L (2021–present)

Flat-six

• M145, 1.9 L (1936–1937, prototype)

Straight-six

• M836, 3.9 – 4.0 L (1924–1929)
• M9456, 6.3 L (1924–1929)
• M01, 1.4 L (1926, prototype)
• M02, 2.0 L (1926–1933)
• M03, 3.0 L (1926–1927)
• M04, 3.0 – 3.1 L (1927–1928)
• M09, 3.4 L (1928–1929)
• M06, 6.8 – 7.1 L (1928–1934)
• M10, 3.5 L (1929–1933)
• M11, 2.6 L (1929–1935)
• M15, 1.7 L (1931–1936)
• M18, 2.9 L (1933–1937)
• M21, 2.0 L (1933–1936)
• M143, 2.2 L (1936–1941)
• M142, 3.2 L (1937–1942)
• M153, 2.3 L (1939–1943)
• M159, 2.6 L (1940, prototype)
• M180, 2.2 – 2.3 L (1951–1980)
• M186, 3.0 L (1951–1958)
• M188, 3.0 L (1952–1958)
• M194, 3.0 L (1952)
• M198, 3.0 L (1954–1963)
• M199, 3.0 L (1955–1958)
• M127, 2.2 L (1958–1964)
• M189, 3.0 L (1958–1967)
• M129, 2.5 L (1965–1967)
• M108, 2.5 L (1965–1967)
• M130, 2.8 L (1968–1972)
• M114, 2.5 L (1967–1972)
• M123, 2.5 L (1976–1985)
• M110, 2.8 L (1972–1986)
• M103, 2.6 – 3.0 L (1984–1995)
• M104, 2.8 - 3.2 – 3.6 L (1989–1997)
• M256, 3.0 L (2017–present)

V6

• M106, 2.5 L (1994–1996; non-production - prototype DTM racing engine)
• M112, 2.4 – 3.7 L (1997–2005)
• M272, 2.5 – 3.5 L (2004–2017)
• M276, 2.8 – 3.5 L (2010–present)
• Mercedes-Benz turbo-hybrid V6 F1 engine 1.6 L (2014–present)^[1]

Flat-eight

• M146, 2.5 L (1936-1937, prototype)

Straight-eight

• M08, 4.6 – 5.0 L (1928–1940)
• M07, 7.7 L (1930–1938)
• M19, 3.8 L (1932–1933)
• M22, 3.8 – 4.0 L (1933–1934)
• M24, 5.0 – 5.4 L (1934–1944)
• M150, 7.7 L (1938–1944)
• M124, 5.8 L (1939, prototype)
• M25 / M125 3.4 - 5.7 L (1934–1939)
• M196 2.5 – 3.0 L (1954–1955)

V8

• M147, 4.0 L (1938, prototype)
• M100, 6.3 – 6.9 L (1963–1981)
• M116, 3.5 – 4.2 L (1969–1991)
• M117, 4.5 – 5.6 L (1971–1992)
• M119, 4.2 – 6.0 L (1989–1999)
• 500I, 3.43 L (1994; non-production – Indy car racing engine)
• IC108, 2.65 – 3.43 L (1995–2000; non-production – Indy car racing engine)
• M113, 4.3 – 5.5 L (1997–2012)
• M155, 5.4 L (2004–2009)
• M273, 4.7 – 5.5 L (2005–2010)
• FO, 2.4 L (2006–2013; non-production – Formula One racing engine)^[2][3][4]
• M156, 6.2 L (2006–2014)
• M159, 6.2 L (2009–2014)
• M278, 4.7 L (2010–2020)
• M157, 5.5 L (2010–2019)
• M152, 5.5 L (2012–2015)
• M176/M177/M178, 4.0 L (2014–present)^[5]

V10

• FO, 3.0 – 3.5 L (1994–2005; non-production – racing engine)^[6]

V12

• M154 / M163 3.0 – 4.7 L (1934–1939; non-production – Grand Prix racing engine)
• M148, 6.0 L (1941–1942, prototype)
• M157, 6.0 L (1941–1942, prototype)
• MB503 42.4 - 44.5 L (1937-1939, prototype)
• MB509, 44.0 L (used in Panzer VIII Maus V1)
• M120, 6.0 – 7.3 L (1991–1998)
• M297, 6.9 – 7.3 L (1997–present (limited))
• M137, 5.8 – 6.3 L (1998–2002)
• M285, 5.5 L (2003–2012)
• M275, 6.0 L (2004–2015)
• M279, 6.0 L (2012–present)
• M158, 6.0 L (2012–present)
• M277, 6.0 L (2014–2020)

Flat-12

• M291, 3.5 L (1991–1992; non-production – Group C racing engine)^{[7][8][9][10][11][12]}

Wankel

• M950, 1.8 – 2.4 L (1969–1970)

Inline diesel engines

One-cylinder

• MB851, 1.5 L
• MB861, 1.5 L

Inline-Two

• MB852, 2.9 L
• MB862, 2.9 L
• OM632, 0.8 L
• M202B, 6.5 L (1947–???)

Inline-three

• MB853, 4.3 L
• M203B, 9.7 L (1947–???)
• MB863, 4.3 L (1954–???)
• OM660, 0.8 L (1998–2015)
• OM639, 1.5 L (2004–2009)

Inline-four

• OM138, 2.5 L (1935–1940)
• OM636, 1.7 – 1.8 L (1949–1990)
• OM621, 1.9 – 2.0 L (1959–1967)
• OM615, 2.0 – 2.2 L (1968–1985)
• OM616, 2.4 L (1973–1985)
• OM601, 2.0 – 2.3 L (1983–2001)
• OM604, 2.0 – 2.2 L (1993–1998)
• OM668, 1.7 L (1997–2005)
• OM611, 2.1 – 2.2 L (1998–2006)
• OM646, 2.1 L (2002–2010)
• OM640, 2.0 L (2004–2012)
• OM651, 1.8 – 2.1 L (2008–present)
• OM622/OM626, 1.6 L (2014–2018)
• OM654, 2.0 L (2016–present)
• OM664 (Ssangyong D20DT engine), 2.0 L (2005–2012)
• OM699, 2.3 L (2017–2020)
• OM607, 1.5 L (2012–present)
• OM608, 1.5 L (2018–present)

Buses and trucks:

• OM314, 3.8 L (1965–???)
• OM364, 4.0 L (1984–???)
• OM904, 4.2 L (1996–present)
• OM924, 4.8 L (2004–present)
• OM934, 5.1 L (2013–present)^[13]

Inline-five

• OM617, 3.0 L (1974–1991)
• OM602, 2.5 – 2.9 L (1985–2002)
• OM605, 2.5 L (1993–2001)
• OM612, 2.7 L (1999–2006)
• OM665, 2.7 L (2001–2014) (Licensed version of OM612 engine for (WJ) Jeep Grand Cherokee (OM665.921 2.7 CRD engine) and for some models of SsangYong (D27DT/OM665.9xx 2.7 XDI engine))
• OM647, 2.7 L (2004–2006)

Inline-six

• OM603, 3.0 – 3.5 L (1986–1997)
• OM606, 3.0 L (1993–2001)
• OM613, 3.2 L (1999–2003)
• OM648, 3.2 L (2002–2006)
• OM656, 2.9 L (2017–present)

Buses and trucks:

• OM5, 8.6 L (1928–1932)
• OM49
• OM54, 12.5 L (1934–1939)
• OM57, 11.3 – 12.5 L (1938–1940)
• OM65
• OM67, 7.2 – 7.4 L (1935–1954)
• OM77
• OM79, 10.3 L (1932–1936)
• OM302, 4.6 L (1941) (prototype)
• OM312, 4.6 L (1949)
• OM315, 8.2 L
• OM321, 5.1 L
• OM322, 5.7 L
• OM326, 10.8 L
• OM346, 10.8 L
• OM352, 5.7 L (1963–???)
• OM355, 11.6 L
• OM360, 8.7 L
• OM366, 6.0 L (1984–present)
• OM407 11.4 L
• OM427 12.0 L
• OM447 12.0 L
• OM457, 12.0 L (2003–present)
• OM460 12.8 L
• OM470, 10.7 L
• OM471, 12.8 L
• OM472, 14.8 L
• OM473, 15.6 L (2012–present)^[14]
• OM906, 6.4 L (1998–present)
• OM926, 7.2 L (2000–present)
• OM936, 7.6 L (2013–present)

V-diesel engines

V6

• OM642, 3.0 L (2005–present)

Buses and trucks:

• OM401, 9.6L
• OM421, 11.0 L (1982–1995)^[15]
• OM441 (1978–present) (used in Hyundai KR111/RM114)
• OM501, 12.0 L

V8

• OM628, 4.0 L (1999–2005)
• OM629, 4.0 L (2005–2010)

Busses and trucks:

• OM402 12.8 L
• OM422 14.6 L
• OM442 14.6 L - 15.1 L
• OM502 16.0 L

V10

• OM403 16.0 L
• OM423 18.3 L
• OM443 18.3 L - 18.8 L
• OM503

V12

• OM404, 20.9 L
• OM424 22.0 L
• OM444, 22.6 L
• OM504
• MB500, 66.4 L (used in e-boats)
• MB507, 42.4 – 44.5 L
• MB512
• MB517, 42.4 L (used in Panzer VIII Maus V2)
• MB820
• MB835

V16

• MB602
• MB512
• MB839, 104.3 L

V20

• MB501
• MB511
• MB518, 134.4 L (1951–1973)

Natural gas engines

• M366 (CNG), 6.0 L^[16][17]
• M407 (LPG)
• M447 (CNG), 12.0 L^[18][19]
• M906 (CNG), 6.9 L^{[20][21][22][23][24]}
• M936G (CNG), 7.7 L^[25][26]
• OM924, 4.8 L^[27][28]
• OM926 (CNG), 7.2 L^{[29][30][31][32][28]}