Question 1

What is Valeo radiator gearbox contamination on the Mercedes-Benz Mercedes-Benz C-Class (W203)?

Accepted Answer

Radiator can leak coolant into the transmission fluid, destroying the gearbox.

Question 2

What is M271 timing chain stretch on the Mercedes-Benz Mercedes-Benz C-Class (W203)?

Accepted Answer

The 1.8 Kompressor petrol engine uses a timing chain that stretches over time, causing rattling on cold start. In severe cases the chain can jump, destroying the engine.

Question 3

What is Rust on arches, sills and bootlid on the Mercedes-Benz Mercedes-Benz C-Class (W203)?

Accepted Answer

W203s are notorious for corrosion around the wheel arches, sills and bootlid edges. Structural corrosion on sills and subframe mounting areas is an MOT failure.

Question 4

What should I check when buying a used Mercedes-Benz Mercedes-Benz C-Class (W203)?

Accepted Answer

Confirm the car escaped the Valeo radiator issue (pre-2005).

Question 5

What should I check when buying a used Mercedes-Benz Mercedes-Benz C-Class (W203)?

Accepted Answer

Check for rust around arches and bootlid.

Question 6

What should I check when buying a used Mercedes-Benz Mercedes-Benz C-Class (W203)?

Accepted Answer

Listen for timing chain rattle on M271 petrols.

Question 7

What years was the Mercedes-Benz Mercedes-Benz C-Class (W203) made?

Accepted Answer

The Mercedes-Benz Mercedes-Benz C-Class (W203) was produced from 2000 to 2007.

Mercedes-Benz Mercedes-Benz C-Class (W203)

Mercedes-Benz C-Class (W203) Reliability & Common Faults

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