180, 200, 250 BlueEfficiency Engine M271evo


The 4 cylinder 1.8-liter turbocharged direct injection engine is one of the best mid-range engines, which is available in the 3 versions 180, 200 and 250 BlueEfficiency in the C, E and SLK Class.

For all models and engine variants we speak about the same engine displacement, but with different factory engine electronics.

With our additional electronic module we achieve a low-cost and easy fittment performance increase in all cases for the M271evo engine. On request, we can improve the response in the middle and upper rev range with our sport downpipes.



Version 180 BlueEfficiency: Loewenstein LM18BE

Consisting of additional module

188 HP and 300 Nm (221 lb-ft) of torque



Version 200 BlueEfficiency: Loewenstein LM20BE

Consisting of additional module

220 HP and 325 Nm (240 lb-ft) of torque



Version 250 BlueEfficiency: Loewenstein LM25BE

Consisting of additional module

245 HP and 375 Nm (277 lb-ft) of torque



Learn more next about all related Loewenstein articles:


  • CGI additional module



Learn more here about the Loewenstein BlueEfficiency modules...


Supported platforms:


  • C180 BE (W/C/S204) with 1.8 Turbo from 2009 to 2012 (factory 156 HP)
  • C200 (W/S204), E200 (W/S212) and (C/A207), SLK200 (R172) BE with 1.8 Turbo from 2009 (factory 184 HP)
  • C250 (W/S204), E250 (W/S212) and (C/A207), SLK250 (R172) BE with 1.8 Turbo from 2009 (factory 204 HP)

All listed performance figures are approximate values. They depend on vehicle-specific details such as the vehicle type, equipment, tare weight, rear-axle ratio, wheel-tyre combinations, transmission type and aerodynamic equipment of the specific car. Figures about performance increases and/or performance kits are to be understood as average values. Test-dependent divergences of +/- 5% are possible. Figures about the overall performance of changed factory engines through performance increases and/or performance kits are based on the manufacturer´s data listed in the vehicle regristration document. They can vary by +/- 5%. LOEWENSTEIN does not warrant any further reduced performance of factory engines. Specifications are subject to change without prior notice.