Mercedes OM646 engine

The 2.2-liter diesel engine Mercedes OM 646 was produced from 2002 to 2010 and installed in the C-Class, CLK-Class, E-Class models, as well as in Vito and Sprinter minibuses. There was a version of this engine with a transverse arrangement, the OM 644, for the Chrysler PT Cruiser. The R4 engine lineup includes: OM616 OM601 OM604 OM611 OM640 OM651 OM654 OM668

Technical specifications of the engine Mercedes OM646 2. 2 CDI.

Modified: OM 646 DE 22 LA red. or 200 CDI
Typrow
Number of cylinders4
number of valves16
Exact capacity2148 cm³
Cylinder diameter88 mm
Piston stroke.88.3 mm
Power systemCommon Rail
Power88 - 122 HP
Torque220 - 290 nm
Compression ratio18.0
Fuel typediesel
Environmental classEURO 3
Modified: OM 646 DE 22 LA or 220 CDI
Typrow
Number of cylinders4
number of valves16
Exact capacity2148 cm³
Cylinder diameter88 mm
Piston stroke.88.3 mm
Power systemCommon Rail
Power129 - 150 HP
Torque305 - 340 nm
Compression ratio18.0
Fuel typediesel
Environmental classEURO 3
Modified: OM 646 DE 22 LA EVO red. or 200 CDI
Typrow
Number of cylinders4
number of valves16
Exact capacity2148 cm³
Cylinder diameter88 mm
Piston stroke.88.3 mm
Power systemCommon Rail
Power136 HP
Torque270 - 340 nm
Compression ratio17.5
Fuel typediesel
Environmental classEURO 4
Modified: OM 646 DE 22 LA EVO or 220 CDI
Typrow
Number of cylinders4
number of valves16
Exact capacity2148 cm³
Cylinder diameter88 mm
Piston stroke.88.3 mm
Power systemCommon Rail
Power170 HP
Torque400 nm
Compression ratio17.5
Fuel typediesel
Environmental classEURO 4

Fuel consumption Mercedes OM646 engine

Using the example of the 2005 Mercedes E 220 CDI with a manual gearbox:
City8.8 litry
Route5.0 litry
Mixed6.3 litry

Engine Overview and Common Failures

The weight of the OM646 engine according to the catalog is 204 kg. The engine number can be found in two places. Fuel system: The engine is equipped with a reliable Bosch fuel system with electromagnetic injectors, but leaks from the seals of the injection pump or wear of the metering valve are common. Also, like its predecessor, the refractory washers under the injectors often burn out. Swirl flaps: Plastic swirl flaps in the intake manifold cause a lot of trouble here: they quickly break and come off, and air is sucked in through the holes in their axes. Bearing rotation: The most serious problem is bearing rotation at a mileage of 200 - 300 thousand km. Poor maintenance is considered the main cause, so update the lubrication more often. Other problems: Like many others, these diesel engines are often plagued by oil leaks or air suction. Versions with a single turbo are reliable, but bi-turbo modifications can be troublesome.

Engine Mercedes Om646

Mercedes
C-Class W2032003 - 2007
C-Class W2042007 - 2009
CLC-Class C2032008 - 2010
CLK-Class C2092005 - 2009
E-Class W2112002 - 2009
V-Class W6392003 - 2010
Sprinter W9062006 - 2009
Sprinter Classic2013 - CE

Engines from the same line as Mercedes OM646 engine

See Also

Mercedes Engine Om654

The 2.0-liter diesel engine Mercedes OM 654 was introduced by the company only in 2016 and is characterized by an aluminum cylinder block with plasma-sprayed Nanoslide iron coating. There is a version of the transverse OM 654q layout as well as an updated modification OM 654M. The R4 series includes: OM616 OM601 OM604 OM611 OM640 OM646 OM651 OM668

Mercedes OM617 engine

The 3.0-liter, inline, five-cylinder Mercedes OM 617 engine was produced from 1974 to 1990 and installed in popular models such as the W123, W126, and the off-road vehicle Geländewagen. This diesel engine was continuously modernized, so there are several versions of it. The R5 engine lineup also includes the following diesel units: OM602, OM605, OM612, and OM647.

Mercedes engine Om 603

Mercedes OM603 6-cylinder engines with a capacity of 3.0 and 3.5 liters were produced from 1984 to 1997 and installed in many popular models of the German company, such as W124, W126, and W140. There were three versions of this diesel engine available: one naturally aspirated and two with turbocharging. The R6 engine line also includes diesel units: OM606, OM613, OM648, and OM656.

Mercedes Engine OM648

The 3.2-liter inline 6-cylinder Mercedes OM648 engine was produced from 2002 to 2006 and was exclusively installed in the W211 body E-Class models and the upgraded W220 body S-Class models. In addition to the standard version with a power output of 204 horsepower, a variant with reduced power output of 177 horsepower was also offered. The R6 series also includes diesel engines: OM603, OM606, OM613, and OM656.

Audi Engine CEUA

The 4.0-liter Audi CEUA or A8 4.0 TFSI engine was produced by the company in the years 2012-2013 and installed in versions with forced induction of the popular sedan A8 in the D4 body before the facelift. After the facelift of this model, this engine made way for a more powerful unit with the CTGA index. The EA824 series includes: ABZ, AEW, AXQ, BAR, BFM, BVJ, CDRA, and CRDB.

Audi CCWA engine

The 3.0-liter Audi CCWA 3.0 TDI engine was manufactured by the German company from 2007 to 2012 and used in well-known models such as the A4, A5, and Q5 crossover in the 8R body style. This diesel engine belongs to the modernized EA896 series, also known as EVO or G2. The EA896 line also includes the following engines: ASB, BPP, BKS, BMK, BUG, and CASA.