2018 Mercedes-Benz A-Class 1.5L Diesel · C21 OEL
2018 Mercedes-Benz A-Class (1.5L, diesel). First registered 28 Sept 2018. Recorded mileage 84,515 miles. MOT valid until 27 Sept 2027. No outstanding manufacturer safety recalls recorded.
- Make & Model
- MERCEDES-BENZ A-CLASS
- Year / Origin
- 2018 · Cardiff
- Safety Recall
- None Outstanding
- MOT Status
- Valid until 27 Sept 2027
- Road Tax
- —
- Recorded Mileage
- 84,515 mi
- ULEZ Compliance
- ULEZ Compliant (Euro 6 Diesel)
- Fuel & Engine
- Diesel · 1.5L
- Reliability Guide
- Common Faults
Thinking of buying this vehicle? Free MOT and tax checks do not cover legal ownership. If outstanding finance exists, finance companies have legal right to repossess without compensation.
C21 OEL Key Findings
- 5 MOT tests recorded
- Latest MOT passed on 01/09/2026
- 84,515 miles recorded at latest MOT
- 1 historical MOT failure
- No defects recorded at the latest MOT
- Recurring tyres items (2 mentions)
Derived directly from the recorded DVSA and DVLA data shown on this page.
C21 OEL MOT History
Interpretation generated from the recorded test data above — not an official DVSA statement and not a substitute for an independent inspection.
5 MOT tests are recorded for this 2018 Mercedes-Benz A-Class (C21 OEL) between September 2023 and September 2026.
The record contains 4 passes and 1 failure.
The most recent test on 01 September 2026 was a pass, although the earlier record includes 1 failure that buyers may want to investigate.
Across all tests, the most frequently flagged areas are: Tyres (2 issues). Repeated mentions in one area can indicate an ongoing pattern worth checking in person.
Recorded failure items include: “Offside Front Tyre tread depth below requirements of 1.6mm (5.2.3 (e))”; “Nearside Front Tyre tread depth below requirements of 1.6mm (5.2.3 (e))”; “Rear Registration plate does not conform to the specified requirements (0.1 (d))”.
C21 OEL Mileage History
- 11/09/202343,224 mi
- 06/09/202458,908 mi+15,684 mi
- 28/09/202577,211 mi+18,303 mi
- 29/09/202577,285 mi+74 mi
- 01/09/202684,515 mi+7,230 mi
Average of roughly 13,889 miles per year across 5 recorded odometer readings.
Technical Specifications
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Known faults for Mercedes-Benz Mercedes-Benz A-Class (W176)
Our database tracks 6 specific mechanical faults and recurring failure patterns identified across UK MOT testing stations for this generation.
MOT Roadworthiness: Average
This rating reflects historical MOT pass rates and recurring advisory wear patterns from official DVSA test logs. Note that roadworthiness does not verify outstanding finance, insurance write-offs, or stolen records.
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Digital Service History
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MERCEDES-BENZ A-CLASS Model Intelligence & Reliability
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Owner-reported defects, recurring MOT failure points, and estimated repair costs.
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Historical MOT pass rates and DVLA records for 2018 model year cars.
- OM651 Diesel Chain Tensioner Oil LeakModerate
On 1.8-litre and 2.1-litre OM651 diesel engines, the timing chain tensioner seal is a well-documented weak point. Over time the rubber O-ring gasket degrades, leading to persistent engine oil weeping down the right flank of the engine block. Left unaddressed, loss of oil pressure at the tensioner can cause timing chain rattle on startup and premature stretch.
- DCT gearbox judder and clutch wearModerate
The 7G-DCT dual-clutch transmission (Getrag/Mercedes 724.0) suffers from low-speed lurching, clutch shudder, and software calibration drift, particularly on cars driven primarily in stop-start urban traffic. Neglecting the mandatory 4-year/40,000-mile transmission fluid and dual-filter service accelerates clutch pack wear and mechatronic solenoid sticking.
- M270 Petrol Timing Chain StretchSerious
The 1.6-litre and 2.0-litre M270 turbocharged four-cylinder petrol engines can experience timing chain elongation and tensioner fatigue, especially when subject to extended variable service intervals. An elongated chain causes camshaft timing deviation, triggering check engine warnings and in severe cases skipping teeth.
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