2018 Mercedes-Benz A-Class 2.1L Diesel · WH18 KDU
2018 Mercedes-Benz A-Class (2.1L, diesel). First registered 27 Mar 2018. Recorded mileage 94,234 miles. MOT valid until 28 Apr 2027.
- Make & Model
- MERCEDES-BENZ A-CLASS
- Year / Origin
- 2018 · Exeter
- Safety Recall
- Unknown
- MOT Status
- Valid until 28 Apr 2027
- Road Tax
- —
- Recorded Mileage
- 94,234 mi
- ULEZ Compliance
- ULEZ Compliant (Euro 6 Diesel)
- Fuel & Engine
- Diesel · 2.1L
- Reliability Guide
- Common Faults
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WH18 KDU Key Findings
- 5 MOT tests recorded
- Latest MOT passed on 30/04/2026
- 94,234 miles recorded at latest MOT
- 1 historical MOT failure
- No defects recorded at the latest MOT
- Recurring lighting items (4 mentions)
Derived directly from the recorded DVSA and DVLA data shown on this page.
WH18 KDU 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 (WH18 KDU) between April 2023 and April 2026.
The record contains 4 passes and 1 failure.
The most recent test on 30 April 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: Lighting (4 issues), Tyres (3 issues), Brakes (1 issue). Repeated mentions in one area can indicate an ongoing pattern worth checking in person.
In total 6 advisory notices are recorded. Advisories flag items that passed but may need attention before the next test; they are not evidence of how well the vehicle has been serviced.
Recorded failure items include: “Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g))”; “Offside Rear Tyre has a cut in excess of the requirements deep enough to reach the ply or cords (5.2.3 (d) (i))”; “Nearside Rear Tyre has a cut in excess of the requirements deep enough to reach the ply or cords (5.2.3 (d) (i))”.
WH18 KDU Mileage History
- 11/04/202325,045 mi
- 08/04/202447,478 mi+22,433 mi
- 10/04/202571,704 mi+24,226 mi
- 14/04/202571,783 mi+79 mi
- 30/04/202694,234 mi+22,451 mi
Average of roughly 22,664 miles per year across 5 recorded odometer readings.
Technical Specifications
Core Specifications
Identification & Status
Dimensions & Weights
Diagnostic & Valuation Intelligence
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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: Good
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
Verified MOT failure trends, buying advice, and technical directory specifications.
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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