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{{Infobox Automobile engine
| image         = 
| name          = Mercedes-Benz OM611 engine
| aka           = 
| manufacturer  = [[Mercedes-Benz]]
| type          = OM611
| production    = [[1998]]–[[2006]]
| predecessor   = [[Mercedes-Benz OM604 engine]]
| successor     = [[Mercedes-Benz OM646 engine]]
| bore          = 88.0 mm
| stroke        = 88.3–88.4 mm
| displacement  = {{auto cc|2148}}<br>{{auto cc|2151}}
| length        = 
| diameter      = 
| width         = 
| height        = 
| weight        = 
| block         = 
| head          = 
| valvetrain    = DOHC
| supercharger  = 
| turbocharger  = Yes
| fuelsystem    = [[Common rail]] direct injection
| fueltype      = [[Diesel]]
| oilsystem     = 
| coolingsystem = 
| power         = 60–105&nbsp;kW (82–143&nbsp;hp)
| specpower     = 
| torque        = 200–315 Nm (148–232 lb·ft)
| compression   = 
| fuelcon       = 
| specfuelcon   = 
| oilcon        = 
}}
The '''[[Mercedes-Benz]] OM611 [[Internal combustion engine|engine]]''' is a [[straight-4]] [[diesel engine]] produced by [[Mercedes-Benz]].

It replaced in [[1998]] the naturally aspirated [[Mercedes-Benz OM604 engine|OM604]] with indirect injection in the [[Mercedes-Benz C-Class#W202|W202 C-Class]] and the [[Mercedes-Benz W210|W210 E-Class]] for the [[1999]] [[model year]], in {{auto PS|102|0}} and {{auto PS|125|0}} powertrains.

In [[1999]], the displacement were reduced from {{auto cc|2151}} to {{auto cc|2148}} for the E-Class, and the engine were now available ind {{auto PS|116|0}} and {{auto PS|143|0}} powertrains.

It was also introduced with the facelift of the [[Mercedes-Benz Sprinter|W90x Sprinter]] in [[2000]] for the [[2001]] model year in {{auto PS|82|0}}, {{auto PS|109|0}} and {{auto PS|129|0}} powertrains, and in the [[Mercedes-Benz C-Class#W203|W203 C-Class]] in {{auto PS|122|0}} and {{auto PS|143|0}} powertrains.

The [[Mercedes-Benz W211|W211 E-Class]] introduced in [[2002]] were not equipped with the OM611, but with the new [[Mercedes-Benz OM646 engine|OM646]] engine.

== Technical specifications ==
{|class="wikitable" cellpadding="0" cellspacing="0" style="text-align:center; font-size:91%;"
|-
!style="background:#DCDCDC" align="center" valign="middle" | Displacement
!style="background:#DCDCDC" align="center" valign="middle" | Bore
!style="background:#DCDCDC" align="center" valign="middle" | Stroke
!style="background:#DCDCDC" align="center" valign="middle" | Cylinders
!style="background:#DCDCDC" align="center" valign="middle" | Valves
!style="background:#DCDCDC" align="center" valign="middle" | Power
!style="background:#DCDCDC" align="center" valign="middle" | Torque
!style="background:#DCDCDC" align="center" valign="middle" | Applications
|-
|rowspan="2"|{{auto cc|2151}}||rowspan="9"|88.0 mm||rowspan="2"|88.4 mm||rowspan="9"|[[straight-4]]||rowspan="9"|16||{{auto PS|102|0}} @4200 rpm||{{auto Nm|235}} @1500 rpm||1998 [[Mercedes-Benz C-Class#W202|W202 C-Class]], 1998 [[Mercedes-Benz W210|W210 E-Class]]
|-
|{{auto PS|125|0}} @4200 rpm||{{auto Nm|300}} @1800 rpm||1998 [[Mercedes-Benz C-Class#W202|W202 C-Class]], 1998 [[Mercedes-Benz W210|W210 E-Class]]
|-
|rowspan="7"|{{auto cc|2148}}||rowspan="7"|88.3 mm||{{auto PS|82|0}} @3800 rpm||{{auto Nm|200}} @1400–2600 rpm||2000 [[Mercedes-Benz Sprinter|W90x Sprinter]]
|-
|{{auto PS|109|0}} @3800 rpm||{{auto Nm|270}} @1400–2400 rpm||2000 [[Mercedes-Benz Sprinter|W90x Sprinter]]
|-
|{{auto PS|116|0}} @4200 rpm||{{auto Nm|250}} @1400–2600 rpm||1999 [[Mercedes-Benz W210|W210 E-Class]], 2000 [[Mercedes-Benz C-Class#W203|W203 C-Class]]
|-
|{{auto PS|122|0}} @3800 rpm||{{auto Nm|270}} @1600–2400 rpm||2003 [[Mercedes-Benz W211|W211 E-Class]], 2003 [[Mercedes-Benz C-Class#W203|W203 C-Class]]
|-
|{{auto PS|129|0}} @3800 rpm||{{auto Nm|300}} @1600–2400 rpm||2000 [[Mercedes-Benz Sprinter|W90x Sprinter]]
|-
|{{auto PS|136|0}} @4200 rpm||{{auto Nm|315}} @1800–2600 rpm||1999 [[Mercedes-Benz W210|W210 E-Class]] for [[Belgium]]
|-
|{{auto PS|143|0}} @4200 rpm||{{auto Nm|315}} @1800–2600 rpm||1999 [[Mercedes-Benz W210|W210 E-Class]], 2000 [[Mercedes-Benz C-Class#W203|W203 C-Class]]
|}



[[Category:Mercedes-Benz engines|OM611]]