2012 Mercedes-Benz B-Class 1.8L Diesel · FN12 CWD
2012 Mercedes-Benz B-Class (1.8L, diesel). First registered 16 Aug 2012. Recorded mileage 114,957 miles. MOT expired on 23 May 2026.
- Make & Model
- MERCEDES-BENZ B-CLASS
- Year / Origin
- 2012 · Nottingham
- Safety Recall
- Unknown
- MOT Status
- Expired on 23 May 2026
- Road Tax
- —
- Recorded Mileage
- 114,957 mi
- ULEZ Compliance
- Non-Compliant (Pre-Euro 6 Diesel)
- Fuel & Engine
- Diesel · 1.8L
- 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.
FN12 CWD Key Findings
- 5 MOT tests recorded
- Latest MOT passed on 23/05/2025
- 114,957 miles recorded at latest MOT
- 2 historical MOT failures
- No defects recorded at the latest MOT
Derived directly from the recorded DVSA and DVLA data shown on this page.
FN12 CWD 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 2012 Mercedes-Benz B-Class (FN12 CWD) between May 2023 and May 2025.
The record contains 3 passes and 2 failures.
The most recent test on 23 May 2025 was a pass, although the earlier record includes 2 failures that buyers may want to investigate.
FN12 CWD Mileage History
- 22/05/2023107,904 mi
- 23/05/2023107,171 mi-733 mi
- 24/05/2023107,172 mi+1 mi
- 14/05/2024112,624 mi+5,452 mi
- 23/05/2025114,957 mi+2,333 mi
Average of roughly 3,520 miles per year across 5 recorded odometer readings.
Recorded mileage decreased between one or more tests — a potential clocking indicator worth verifying before purchase.
Technical Specifications
Core Specifications
Identification & Status
Dimensions & Weights
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Known faults for Mercedes-Benz Mercedes-Benz B-Class (W246)
Our database tracks 3 specific mechanical faults and recurring failure patterns identified across UK MOT testing stations for this generation.
MOT Roadworthiness: Below 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 B-CLASS Model Intelligence & Reliability
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Historical MOT pass rates and DVLA records for 2012 model year cars.
- 7G-DCT Gearbox JudderModerate
The dual-clutch automatic can become hesitant or jerky if clutch wear is present or fluid changes have been skipped.
- OM651 Diesel Timing Chain Tensioner Oil LeakModerate
The gasket on the timing chain tensioner is a frequent leak point. Oil loss can reduce tensioner pressure and lead to chain rattle and eventual stretch.
- Water ingress in boot from rear air vent sealsModerate
The rear air vent seals behind the bumper can fail, allowing water into the boot. This can damage the rear SAM electrical module, causing lighting and locking faults.
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