Mercedes M273 engine

The Mercedes M273 V8 engine series with a capacity of 4.7 and 5.5 liters was produced from 2005 to 2015 and installed in many expensive models of the German company, such as the W211, W221, and X164. These engines have gained a reputation as some of the most problematic engines in the company. The V8 engine lineup also includes the M119, M113, M157, and M278 engines.

Technical specifications of Mercedes M273 series engines.

Modification: M 273 KE 46
Exact capacity4663 cm³
Power systemdistributed injection
Engine power340 HP
Torque460 nm
Engine blockaluminum V8
Block headaluminum 32v
Cylinder diameter92.9 mm
Piston stroke.86 mm
Compression ratio10.7
Engine featuresthere is no
Hydraulic compensator. tak
Timing drivechain
Timing phase adjusteron intake and exhaust.
Turbochargingthere is no
What oils to use8.5 liters 5W-40
Fuel type95
Environmental classEURO 4/5
Approximate life expectancy300 000 HP
Modification: M 273 KE 55
Exact capacity5461 cm³
Power systemdistributed injection
Engine power388 HP
Torque530 nm
Engine blockaluminum V8
Block headaluminum 32v
Cylinder diameter98 mm
Piston stroke.90.5 mm
Compression ratio10.7
Engine featuresthere is no
Hydraulic compensator. tak
Timing drivechain
Timing phase adjusteron intake and exhaust.
Turbochargingthere is no
What oils to use8.5 liters 5W-30
Fuel type95
Environmental classEURO 4/5
Approximate life expectancy350 000 HP

Fuel consumption Mercedes M273 engine

On the example of the 2007 Mercedes S-Class S500 with an automatic transmission:
City17.4 litry
Route8.5 litry
Mixed11.7 litry

Engine Overview and Common Failures

The weight of the M273 engine according to the catalog is 205 kg. The engine number M273 is located at the junction of the block and the gearbox. The unit is considered problematic and its weak point is the camshaft mechanism. Wear of the intermediate gear leads to the replacement of the timing belt kit before reaching 100,000 km. A common engine failure is the wedging of the flaps in the exhaust manifold. Very often, oil leaks through the plastic plugs of the cylinder heads. Engine overheating can cause detonation and damage to the combustion chamber walls.

Engine Mercedes M273

Mercedes
CL-Class C2162006 - 2010
CLK-Class C2092006 - 2010
CLS-Class W2192006 - 2010
E-Class W2112006 - 2009
E-Class W2122009 - 2011
E-Class C2072009 - 2011
S-Class W2212005 - 2011
SL-Class R2302006 - 2011
G-Class W4632007 - 2015
GL-Class X1642006 - 2012
ML-Class W1642007 - 2011
R-Class W2512007 - 2014

Engines from the same line as Mercedes M273 engine

See Also

Mercedes M271 engine

4-cylinder engines of Mercedes, with a capacity ranging from 1.6 to 1.8 liters, designated as M271, were produced from 2002 to 2015 and were installed in all the most popular models of their time, such as W203, W204, and W212. Upgraded engines from the M271 family with the EVO index were introduced in 2009. R4 series: M102, M111, M166, M260, M264, M266, M270, M274, and M282.

Mercedes M256 engine

The 3.0-liter inline 6-cylinder engine of the Mercedes M256 has been installed by the company since 2017 and used in their most powerful and expensive models, such as the S-Class, GLS-Class, and AMG GT. There is a version of this engine with a single turbocharger and an additional electric compressor. The R6 engine lineup also includes the M103 and M104 engines.

Mercedes M272 engine

The V6 engines of the Mercedes M272 series, with a displacement ranging from 2.5 to 3.5 liters, were produced from 2004 to 2017 and installed in the most popular models of the group, such as W204, W211, and W221. There were also specially powerful versions of this engine called Sportmotor. Also belonging to the V6 lineup are the engines: M112 and M276.

Mercedes M119 engine

The V8 engine series of Mercedes M119 with a capacity of 4.2-6.0 liters was produced from 1989 to 1999 and installed in several flagship models of the German company, such as W124, W140, and R129. There were also several more powerful versions of the AMG engine with a capacity of 6.1-6.4 liters. The V8 engine line also includes the following engines: M113, M157, M273, and M278.

Audi Aat engine

The 2.5-liter Audi AAT 2.5 TDI diesel engine was produced by the company from 1991 to 1997 and installed only in two models of the corporation: designated as 100 or the equivalent A6 in the C4 body. This five-cylinder powertrain is known for its high reliability and large capacity. The EA381 series also includes: , CN, AAS, AEL, BJK, and AHD.

VW Engine AKQ

The 1.4-liter petrol engine designated as Volkswagen 1.4 AKQ 16v was produced from 1997 to 2000 and installed only in the fourth generation Golf, similar to the Bora and small Luppo models. This powertrain is the EURO 2 version of the well-known engine with the AXP index. The EA111-1.4 engine lineup includes the following engines: AEX, AXP, BBY, BCA, BUD, CGGB, and CGGB.