Mercedes-Benz M271 engine

2024-10-21T19:38:54Z

2.96.58.85: Use more reliable reference for F3 engine information

{{Infobox automobile engine
| name = Mercedes-Benz M271
| image = Motor M271.jpg
| manufacturer = [[Mercedes-Benz]]
| production = 2002–2015
| configuration = [[Straight-4]]
| supercharger = In some versions and [[intercooled]]
| turbocharger = In DE18LA (M271Evo, 271.8XX)
| block = Cast aluminium
| head = Aluminium
| valvetrain = [[DOHC]] [[multi-valve#Four valves|4 valves x cyl.]] and [[variable valve timing|VVT]]
| fueltype = [[Petrol engine|Gasoline]]
| fuelsystem = [[Sequential fuel injection]]<br/>[[Gasoline direct injection|Direct injection]]
| coolingsystem = [[Radiator (engine cooling)|Water cooled]]
| displacement = {{convert|1597|cc|L|1|abbr=on|order=flip}}<br/>{{convert|1796|cc|L|1|abbr=on|order=flip}}
| bore = {{convert|82|mm|2|abbr=on}}
| stroke = {{convert|75.6|mm|2|abbr=on}}<br/>{{convert|85|mm|2|abbr=on}}
| power = {{convert|122-204|PS|kW hp|0|abbr=on}}
| predecessor = [[Mercedes-Benz M111 engine]]
| successor = [[Mercedes-Benz M274 engine]]
}}
The [[Mercedes-Benz]] '''M271''' engine is a [[straight-4]] [[automobile]] [[piston engine]] family used in the 2000s (decade).

All M271 engines are built in [[Untertürkheim]], [[Germany]]. The family has a cast aluminium engine block and aluminium [[DOHC]] cylinder heads with [[multi-valve#Four valves|4 valves per cylinder]] and [[variable valve timing]] and a [[coil-on-plug ignition]] system.

== KE18 ML (271.9XX) ==
The '''KE18 ML''' is a {{convert|1796|cc|L|1|abbr=on|order=flip}} version. Bore and stroke is {{convert|82x85|mm|2|abbr=on}}. Output ranges from {{convert|122|PS|kW hp|0|abbr=on}} at 5200 rpm to {{convert|194|PS|kW hp|0|abbr=on}} at 5800 rpm.

It uses [[sequential fuel injection]], is [[supercharged]] and [[intercooled]], and features fracture-split [[forged steel]] [[connecting rod]]s.
A version running on natural gas was introduced in the German market in 2002.

Applications:<ref>{{cite web|title=Mercedes-Benz M271 engine|url=http://australiancar.reviews/mercedesbenz_M271.php|website=Australian Car Review and Valuation|publisher=Australian Car Review and Valuation|accessdate=22 April 2015}}</ref>
* 2002 [[Mercedes-Benz CLK-Class (C209)|CLK 200 Kompressor (W209)]]
* 2002 [[Mercedes-Benz C-Class (W203)|C 180 Kompressor, C 200 Kompressor, C 230 Kompressor (W203)]]
* 2002 [[Mercedes-Benz C-Class (W203)#Coupe|C 180 Kompressor SportCoupé, C 200 Kompressor SportCoupé (CL203)]]
* 2004–2006 [[Mercedes-Benz C-Class (W203)#Coupe|C 160 SportCoupé (CL203)]]<ref>{{cite web|url=https://mercedes-benz-publicarchive.com/marsClassic/en/instance/ko/C-160-Sportcoup--CL-203-E-18-ML-LR1-2005---2006.xhtml|website=mercedes-benz-publicarchive.com|title=C 160 Sportcoupé|accessdate=13 March 2024}}</ref>
* 2002 [[Mercedes-Benz W211|E 200 Kompressor (W211)]]
* 2004 [[Mercedes-Benz W211|E 200 NGT (bi-fuel - gasoline + natural gas) (W211)]]
* 2004 [[Mercedes-Benz R171|SLK 200 Kompressor (R171)]]
* 2007 [[Mercedes-Benz C-Class (W204)|C 180 Kompressor, C 200 Kompressor (W204)]]
* 2008 [[Mercedes-Benz C-Class (W203)#Coupe|CLC 180 Kompressor, CLC 200 Kompressor (CL203)]]

== DE18 ML (271.942) ==
This engine had the same dimensions as E18 ML and almost the same features including a supercharger, but used CGI (Stratified '''C'''harged '''G'''asoline '''I'''njection) [[gasoline direct injection]]. It has been produced since 2003 in only one version, with an output of {{convert|170|PS|kW hp|0|abbr=on}} at 5300 rpm. The production ceased in 2005.

Applications:<ref>{{cite web|title=Mercedes-Benz M271 engine|url=http://australiancar.reviews/mercedesbenz_M271.php|website=Australian Car Review and Valuation|publisher=Australian Car Review and Valuation|accessdate=22 April 2015}}</ref>
* 2003 [[Mercedes-Benz C-Class (W203)#Coupe|C 200 CGI SportCoupé (CL203)]]
* 2003 [[Mercedes-Benz C-Class (W203)|C 200 CGI (W203)]]
* 2003 [[Mercedes-Benz CLK-Class (C209)|CLK 200 CGI (C209)]]

== KE16 ML (271.910) ==
The '''KE16 ML''' is a {{convert|1597|cc|L|1|abbr=on|order=flip}} version introduced in 2008. Bore and stroke is {{convert|82x75.6|mm|2|abbr=on}}. It shares the same features with the KE18ML version, like supercharger and [[multi-point fuel injection]]. Output ranges from {{convert|129|PS|kW hp|0|abbr=on}} at 5000 rpm to {{convert|156|PS|kW hp|0|abbr=on}} at 5200 rpm.

Applications:<ref>{{cite web|title=Mercedes-Benz M271 engine|url=http://australiancar.reviews/mercedesbenz_M271.php|website=Australian Car Review and Valuation|publisher=Australian Car Review and Valuation|accessdate=22 April 2015}}</ref>
* 2008 [[Mercedes-Benz C-Class (W203)#Coupe|CLC 160 BlueEFFICIENCY (CL203)]]
* 2008 [[Mercedes-Benz C-Class (W204)|C 180 Kompressor (W204)]]

{{anchor|DE18LA}}

== DE18 LA (M271Evo, 271.8XX) ==
This is the last version of M271 engine family. Dimensions are the same as E18 ML and DE18 ML, but the supercharger has been replaced with a turbocharger; like the DE18 ML it uses the CGI (Stratified '''C'''harged '''G'''asoline '''I'''njection) [[gasoline direct injection]]. Output ranges from {{convert|156|PS|kW hp|0|abbr=on}} at 5200 rpm to {{convert|204|PS|kW hp|0|abbr=on}} at 5500 rpm.

Applications:<ref>{{cite web|title=Mercedes-Benz M271 engine|url=http://australiancar.reviews/mercedesbenz_M271.php|website=Australian Car Review and Valuation|publisher=Australian Car Review and Valuation|accessdate=22 April 2015}}</ref>
* 2009–2013 [[Mercedes-Benz C-Class (W204)|C 180 CGI, C 200 CGI, C 250 CGI (W204)]]
* 2009–2013 [[Mercedes-Benz W212|E 200 CGI, E 250 CGI (W212)]]
* 2010–2013 [[Mercedes-Benz E-Class (C207)|E 200 CGI (C207)]]
* 2009–2013 [[Mercedes-Benz E-Class (C207)|E 250 CGI (C207)]]
* 2011–2015 [[Mercedes-Benz SLK-Class (R172)|SLK 200, SLK 250 (R172)]]

== Other uses ==
The engine in 2.0-litre [[naturally aspirated]] form is used by German automotive company [[HWA Team]] as the basis for a Mercedes-Benz motor racing engine and has been the engine used widely in [[Formula 3]] motor racing powering championship winning drivers across Europe and further afield.<ref>{{cite web|title=FORMULA 3 – ENGINES OF SUCCESS|url=https://www.hwaag.com/en/98-motorsports-c/326-formula-3-engines-of-success|website=HWA AG|accessdate=21 October 2024}}</ref>

== See also ==
* [[List of Mercedes-Benz engines]]

== References ==
{{reflist|30em}}

{{DEFAULTSORT:Mercedes-Benz M271 Engine}}
[[Category:Mercedes-Benz engines|M271]]
[[Category:Straight-four engines]]
[[Category:Gasoline engines by model]]

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Mercedes-Benz M271 engine