2012 Mercedes-Benz B-Class 2.0L Diesel · WN12 ONF
2012 Mercedes-Benz B-Class (2.0L, diesel). First registered 27 Apr 2012. Recorded mileage 131,880 miles. MOT valid until 20 Nov 2026. Taxed until 01 May 2027.
- Make & Model
- MERCEDES-BENZ B-CLASS
- Year / Origin
- 2012 · Bristol
- Safety Recall
- Unknown
- MOT Status
- Valid until 20 Nov 2026
- Road Tax
- Taxed (01 May 2027)
- Recorded Mileage
- 131,880 mi
- ULEZ Compliance
- Non-Compliant (Pre-Euro 6 Diesel)
- Fuel & Engine
- Diesel · 2.0L
- 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.
WN12 ONF Key Findings
- 5 MOT tests recorded
- Latest MOT passed on 11/11/2025
- 131,880 miles recorded at latest MOT
- 1 historical MOT failure
- 5 defects noted at the latest MOT
- Recurring brakes items (8 mentions)
Derived directly from the recorded DVSA and DVLA data shown on this page.
WN12 ONF 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 (WN12 ONF) between November 2022 and November 2025.
The record contains 4 passes and 1 failure.
The most recent test on 11 November 2025 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: Brakes (8 issues), Lighting (7 issues), Tyres (2 issues), Exhaust & Emissions (1 issue). Repeated mentions in one area can indicate an ongoing pattern worth checking in person.
In total 18 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: “Offside Front Road wheel fractured (5.2.2 (a))”; “Nearside Front Road wheel fractured (5.2.2 (a))”.
WN12 ONF Mileage History
- 09/11/2022108,343 mi
- 13/11/2023117,684 mi+9,341 mi
- 29/10/2024122,977 mi+5,293 mi
- 08/11/2025131,878 mi+8,901 mi
- 11/11/2025131,880 mi+2 mi
Average of roughly 7,830 miles per year across 5 recorded odometer readings.
Technical Specifications
Core Specifications
Identification & Status
Dimensions & Weights
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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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Buyer's Guide & Inspection Advisory
Expert automotive synthesis from historical MOT defect records and market benchmarks.
Our Verdict
Exercise caution. The combination of sig
Prioritise a thorough inspection of the wheels and braking system. The MOT history explicitly mentions fractured front wheels and a distorted rear wheel, so check for any remaining alignment issues or signs of impact damage. You should also verify if the inner brake pads, described as 'very low' in November 2025, have been replaced since the test.
The 1.8L diesel engine is designed for efficiency, but maintenance costs for a high-mileage B-Class can be elevated. Expect higher spending on wear-and-tear items such as suspension linkages and braking components, as evidenced by the vehicle's MOT advisories.
Annual costs will include diesel fuel, road tax based on the 2012 diesel emissions bracket, and insurance. Given the age and mileage, a budget for preventative maintenance is essential to avoid costly failures of common weak points.
Closely examine all four wheels for cracks, bends, or distortion, as the MOT history records both fractured front wheels and a distorted rear wheel. Inspect the braking system, specifically the inner pads and discs, which have been flagged as worn or pitted in 2022, 2023, and 2025.
Additionally, check the rear brake pipes for corrosion and ensure the exhaust heatshield is secure, as these were flagged as issues in the 2023 MOT test. Finally, check the front anti-roll bar linkages for play, as noted in the most recent test.
This white 2012 Mercedes-Benz B-Class diesel has recorded 131,880 miles, which is substantially higher than the model's average annual mileage. Its MOT history is marked by a failure in November 2025 due to fractured front road wheels and lighting issues. While it subsequently passed, the record shows persistent advisories regarding brake wear and wheel distortion.
The B-Class has an average MOT pass rate of 80.2%, with aggregate data showing common failure points in tyres, coil springs, and drive shaft joints.
Reviewed by the IsItAGoodCar editorial team — Verified automotive analysis synthesized from official vehicle registries.
Data Sources
DVSA
Official MOT test logs & failure reasons
DVLA
Tax, registration & powertrain specs
Experian
Finance, stolen markers & total loss
AI Analysis
Historical fault & advisory patterns
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