- Engine / equipment
- 1.5 and 2.0 four-cylinder M254 petrol with 48 V integrated starter-generator (ISG): C-Class W206, GLC X254, E-Class W214 and CLE
- Period mentioned
- 2021–2025 (mainly 2021–2022)
- Symptoms
- Rattling on start-up, the engine warning light and camshaft-timing fault codes; in serious cases, engine damage.
- Possible cause described
- A German used-car guide flags the M254 camshaft adjusters as something to check up to model year 2025; according to Motor-Talk users, a breaking oil strainer causes the damage, mainly on 2021 and 2022 cars. From 2025 no problems are reported.
- Check for the garage
- Listen to a cold start; read the engine fault memory; ask for the service history with on-time oil changes and ask the dealer what fix exists for the adjusters.
- Cost cited in the source
- No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.
KNOWN FAULT · Mercedes-Benz
Camshaft adjusters on the M254 petrol engine
Sources are not verified in real time and no entry confirms that your car is affected.
Has this happened to you?
Anonymous answer, no personal data.
Frequently asked questions
How much does it cost to repair this fault?
No verified estimate; ask the garage for a quote.
A rough figure from the original database, not an up-to-date quote.
Calculate estimateHow is it checked?
Listen to a cold start; read the engine fault memory; ask for the service history with on-time oil changes and ask the dealer what fix exists for the adjusters.
What are the symptoms?
Rattling on start-up, the engine warning light and camshaft-timing fault codes; in serious cases, engine damage.
Which cars and years does it affect?
- Brands
- Mercedes-Benz
- Engine / equipment
- 1.5 and 2.0 four-cylinder M254 petrol with 48 V integrated starter-generator (ISG): C-Class W206, GLC X254, E-Class W214 and CLE
- Period mentioned
- 2021–2025 (mainly 2021–2022)
Taking it to a garage?
Models with this entry
- Mercedes-Benz Clase C (W206)2021–2026
- Mercedes-Benz Clase E (W214)2023–2026
- Mercedes-Benz CLE (C236/A236)2023–2026
- Mercedes-Benz GLC (X254)2022–2026
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