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2012 Mercedes-Benz B-Class 1.6L Petrol · KM12 XNJ

KM12 XNJ

2012 Mercedes-Benz B-Class (1.6L, petrol). First registered 03/07/2012. Recorded mileage 79,317 miles. MOT valid until 11/02/2027. Taxed until 01/08/2026.

Make & Model
MERCEDES-BENZ B-CLASS
Year / Origin
2012 · Northampton
Safety Recall
Unknown
MOT Status
Valid until 11/02/2027
Road Tax
Taxed (01/08/2026)
Recorded Mileage
79,317 mi
ULEZ Compliance
ULEZ Compliant (Euro 4+)
Fuel & Engine
Petrol · 1.6L
Reliability Guide
Common Faults
MOT Status
Valid
Valid until 11/02/2027
Tax Status
Taxed
Tax due 01/08/2026
Fuel Type
Petrol
Year
2012
Engine
1595cc
Mechanical Assessment

AI-generated interpretation of this vehicle’s MOT record — not an official statement and not a substitute for an independent inspection.

The vehicle is currently roadworthy, though the maintenance trend indicates a shift toward reactive rather than proactive care. While the most recent test in February 2026 at 79,317 miles passed with only a minor advisory for light misting on the front shock absorbers, the December 2024 failure reveals a lapse in basic upkeep. The failure due to a structural tear in the rear tyre and thin brake pads suggests that essential consumable items were only addressed after failing a formal inspection threshold. At 79,317 miles, this 14-year-old Mercedes has covered a low average of approximately 5,666 miles per year. The usage pattern appears relatively consistent, with roughly 5,700 miles driven between December 2022 and December 2023, and another 5,300 miles recorded between December 2023 and December 2024. This low annual mileage generally reduces wear on the drivetrain but increases the risk of rubber components degrading and brake components seizing, which aligns with the issues seen in the braking history. A buyer should conduct a close inspection of the braking system and front suspension. The December 2024 record flagged worn front discs, pitted rear discs, and low brake fluid levels, indicating the braking system is nearing the end of a service life cycle. The light misting on the front shock absorbers noted in 2026 marks the beginning of a seal failure, which will eventually require replacement to prevent a total leak. Additionally, the windscreen damage mentioned in late 2024 should be checked to ensure the crack has not progressed into a depth that would cause a future failure.

KM12 XNJ Key Findings

  • 5 MOT tests recorded
  • Latest MOT passed on 12/02/2026
  • 79,317 miles recorded at latest MOT
  • 1 historical MOT failure
  • 2 defects noted at the latest MOT
  • Recurring brakes items (6 mentions)

Derived directly from the recorded DVSA and DVLA data shown on this page.

MOT Roadworthiness Analysis
75
/ 100 · Good
DVSA Test Records Evaluated

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.

✓ Valid MOT
✓ Taxed
✓ Good MOT pass rate (80%)
✗ 1 dangerous defects found recently
! Older vehicle
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ULEZ Compliant

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KM12 XNJ Mileage History

  1. 19/12/202264,946 mi
  2. 11/12/202367,634 mi+2,688 mi
  3. 27/12/202472,991 mi+5,357 mi
  4. 27/12/202472,991 mi
  5. 12/02/202679,317 mi+6,326 mi

Average of roughly 4,561 miles per year across 5 recorded odometer readings.

KM12 XNJ MOT History

Vehicle record last updated: 12 Sept 2026, 11:56
MOT Analysis

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 (KM12 XNJ) between December 2022 and February 2026.

The record contains 4 passes and 1 failure.

The most recent test on 12 February 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: Brakes (6 issues), Windscreen (2 issues), Tyres (1 issue), Suspension (1 issue). Repeated mentions in one area can indicate an ongoing pattern worth checking in person.

In total 8 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: “Rear Tyre has a tear, caused by separation or partial failure of its structure both tyres and sides edge worn. (5.2.3 (d”.

PASS
FAIL
ADVISORY