2012 Mercedes-Benz B-Class 1.8L Diesel · DXZ 2014
2012 Mercedes-Benz B-Class (1.8L, diesel). First registered 14 Sept 2012. Recorded mileage 155,892 miles. MOT valid until 03 Dec 2026. Taxed until 01 Dec 2026.
- Make & Model
- MERCEDES-BENZ B-CLASS
- Year / Origin
- 2012 · Chester
- Safety Recall
- Unknown
- MOT Status
- Valid until 03 Dec 2026
- Road Tax
- Taxed (01 Dec 2026)
- Recorded Mileage
- 155,892 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.
DXZ 2014 Key Findings
- 5 MOT tests recorded
- Latest MOT passed on 18/11/2025
- 155,892 miles recorded at latest MOT
- 2 historical MOT failures
- 2 defects noted at the latest MOT
- Recurring tyres items (4 mentions)
Derived directly from the recorded DVSA and DVLA data shown on this page.
DXZ 2014 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 (DXZ 2014) between October 2023 and November 2025.
The record contains 3 passes and 2 failures.
The most recent test on 18 November 2025 was a pass, although the earlier record includes 2 failures that buyers may want to investigate.
Across all tests, the most frequently flagged areas are: Tyres (4 issues), Brakes (2 issues). Repeated mentions in one area can indicate an ongoing pattern worth checking in person.
In total 7 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 Rear Tyre has ply or cords exposed (5.2.3 (d) (ii))”; “Nearside Front Tyre has ply or cords exposed (5.2.3 (d) (ii))”; “Nearside Front Tyre has a tear, caused by separation or partial failure of its structure (5.2.3 (d) (ii))”.
DXZ 2014 Mileage History
- 11/10/2023146,005 mi
- 18/10/2023146,099 mi+94 mi
- 04/12/2024151,902 mi+5,803 mi
- 18/11/2025155,879 mi+3,977 mi
- 18/11/2025155,892 mi+13 mi
Average of roughly 4,695 miles per year across 5 recorded odometer readings.
Technical Specifications
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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.
Verify lender finance agreements, insurance write-offs, police stolen registers, and mileage rollback.
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 significant caution before purchasing this vehicle. While it is a premium diesel MPV, the recent MOT history shows a pattern of dangerous defects and ongoing structural corrosion that requires immediate attention.
If you are considering this B-Class, your primary focus should be on the underside of the vehicle. The MOT history shows a persistent advisory for rear sub-frame corrosion (noted in both 2024 and 2025 tests). You must verify if any remedial work has been carried out to address this or if it is simply being monitored.
Furthermore, the most recent MOT failure in November 2025 involved multiple dangerous tyre defects and a worn front tyre. Ensure that all four tyres have been replaced with high-quality rubber and that the wheels are not just cosmetically cleaned but structurally sound. Given the previous failure involving a fractured alloy wheel in 2023, inspect all four wheels closely for cracks or heavy kerbing.
Finally, check the service history for evidence of timing belt changes and diesel particulate filter (DPF) maintenance, as high-mileage diesel engines of this era require strict adherence to these schedules to avoid costly repairs.
The 1.8L diesel engine is designed for efficiency, likely offering decent motorway mileage, though real-world figures will depend on driving style. As a 2012 model, tax bands vary, so check the specific V5C document for the exact annual rate.
Insurance groups for the B-Class are typically mid-range, but the high mileage and previous 'Dangerous' MOT failures might impact premiums for some drivers. Maintenance costs on a Mercedes-Benz can be higher than on mainstream brands, particularly when addressing suspension components or structural corrosion. Expect a higher-than-average annual maintenance budget to keep this vehicle roadworthy.
First, inspect the tyres thoroughly. The November 2025 failure was particularly severe, with 'Dangerous' ratings for exposed cords and structural tears on multiple tyres. Ensure the replacement tyres are of an acceptable brand and have sufficient tread depth.
Second, perform a rigorous underside inspection. The MOT history explicitly mentions rear sub-frame corrosion and engine/under-tray covers that obscure components. You should insist on a professional inspection where these covers are removed so the technician can accurately assess the extent of the sub-frame corrosion.
Third, check the wheels and suspension. There is a history of a fractured alloy wheel (2023) and worn anti-roll bar linkages. Look for any signs of recent suspension work and ensure the alloy wheels are free from structural defects.
This 2012 silver Mercedes-Benz B-Class has covered 155,892 miles, which is considerable for its age. While it has maintained a consistent service interval, the recent MOT history is concerning, featuring multiple 'Dangerous' failures related to tyre integrity and brake wear. Additionally, a recurring advisory regarding rear sub-frame corrosion suggests a long-term maintenance issue that needs monitoring.
No aggregate reliability data is specifically available for this model, but the individual history of this vehicle shows frequent issues with tyres, brakes, and suspension components.
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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