The Mercedes-Benz C204 is the coupe version of the C-Class (produced from 2011 to around 2015), and the M271 engine is a well-known 1.8-liter inline-4 engine. In many C204 models, this engine is supercharged (Kompressor) and uses a mechanically driven supercharger pump.

Here’s a description of the supercharger pump in the M271 1.8L Kompressor engine:

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Supercharger Pump Description – Mercedes-Benz M271 (C204 1.8L)

Function:

• The supercharger pump (commonly referred to as the supercharger or Kompressor) is a mechanically driven air compressor.
• Its primary job is to force more air into the combustion chamber than atmospheric pressure alone would allow.
• This boosts engine power and torque, especially at lower RPMs compared to a turbocharger.

Type:

• Roots-type supercharger, belt-driven by the engine’s crankshaft.
• Integrated into the intake manifold in many variants.

Key Components:

1. Supercharger pulley & belt – Transfers rotational energy from the engine.
2. Bypass valve – Controls boost pressure and helps reduce load when boost isn’t needed.
3. Intercooler – (External or air-to-water) cools the compressed air before it enters the engine.
4. Electric clutch (in some models) – Engages/disengages the supercharger under certain conditions for fuel efficiency.

Typical Issues:

• Noisy operation (whining or grinding sounds).
• Bypass valve malfunction, causing poor boost control.
• Oil leakage around the supercharger casing or pulley.
• Supercharger clutch failure (if equipped).

Performance Notes:

• Boost pressure is generally 0.5 to 1.0 bar (7–14 psi).
• The supercharged M271 produces between 160–190 horsepower, depending on the specific version.

Common Model Names Using It:

• C180 Kompressor
• C200 Kompressor

If you’re looking to repair, replace, or upgrade the supercharger system on a C204 with an M271 engine, let me know—there are aftermarket options, repair kits, and diagnostic tips I can help with.