Camshaft adjuster solenoid oil leak
Signs: Oil in the wiring plug, check-engine light
Fix: Replace solenoids, check the harness
Petrol · 1,595 / 1,991 cm³ · 90–180 kW
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Fuel: Petrol. Timing drive: chain.
In our database this engine is fitted to 5 model generations, among them: Mercedes-Benz A-Class (W176), Mercedes-Benz B-Class (W246), Mercedes-Benz GLA (X156), Mercedes-Benz CLA (C117), Infiniti Q30 / QX30.
The most expensive known risk is timing chain stretch: it usually appears at 150,000–250,000 km and costs €1,500–3,000 to fix.
| Fuel | Petrol |
|---|---|
| Displacement | 1,595 / 1,991 cm³ |
| Power | 90–180 kW |
| Years | 2011–2019 |
| Timing drive | Chain |
| Oil | 5W-30 · MB 229.5 · ~5.8 L · every 15,000 km |
| Engine codes | M270 |
Faults that belong to the engine itself. They apply to every model with this engine, and each model has its own extra faults on its model page.
Signs: Oil in the wiring plug, check-engine light
Fix: Replace solenoids, check the harness
Signs: Cold-start rattle
Fix: Replace chain and adjusters
Intervals and typical prices, using the Mercedes-Benz A-Class (W176) as an example. The app gives the exact plan for your car.
| Item | Interval | Typical price |
|---|---|---|
| Engine oil + oil filterEngine | every 15,000 km or every 12 months | €70–150 |
| Air filterEngine | every 30,000 km or every 24 months | €15–45 |
| Spark plugsIgnition | every 60,000 km or every 48 months | €50–160 |
| Auxiliary (serpentine) beltEngine | every 120,000 km | €70–180 |
| Coolant replacementCooling | every 150,000 km or every 96 months | €70–150 |
| Timing chain inspection (listen on cold start)Engine | every 150,000 km | €0–120 |
Model generations this engine is fitted to.
Infiniti Q30 / QX30 2015–2019Mercedes-Benz A-Class (W176) 2012–2018Mercedes-Benz B-Class (W246) 2011–2018Mercedes-Benz CLA (C117) 2013–2019Mercedes-Benz GLA (X156) 2013–2020
Chain.
5W-30 · MB 229.5 · ~5.8 L · every 15,000 km.
The faults with the highest risk: timing chain stretch (150,000–250,000 km, €1,500–3,000); camshaft adjuster solenoid oil leak (60,000–140,000 km, €200–500).
Mercedes-Benz A-Class (W176), Mercedes-Benz B-Class (W246), Mercedes-Benz GLA (X156), Mercedes-Benz CLA (C117), Infiniti Q30 / QX30.
Faults, intervals and prices are indicative and collected from public sources and owner experience; always rely on the service book and a qualified workshop. Test statistics: DVSA – Anonymised MOT tests and results, Open Government Licence v3.0. Dutch tests: RDW Open Data (CC0). Engine versions: EEA, monitoring of CO₂ emissions from new passenger cars (CC BY 4.0, DG CLIMA). Owner complaints: NHTSA ODI (public domain). Recalls: DVSA Vehicle Safety Branch Recalls Database, OGL v3.0. Brand and model names are trademarks of their owners and are used only to describe the vehicles.
Updated 08/10/2026