2020 Mercedes-Benz B 1.5L Diesel · LN20 FPP
2020 Mercedes-Benz B (1.5L, diesel). First registered 19 Jun 2020. Recorded mileage 20,676 miles. MOT valid until 15 Apr 2027. A manufacturer safety recall is currently outstanding.
- Make & Model
- MERCEDES-BENZ B
- Year / Origin
- 2020 · Wimbledon (South London)
- Safety Recall
- Recall Notice
- MOT Status
- Valid until 15 Apr 2027
- Road Tax
- —
- Recorded Mileage
- 20,676 mi
- ULEZ Compliance
- ULEZ Compliant (Euro 6 Diesel)
- Fuel & Engine
- Diesel · 1.5L
- Reliability Guide
- Common Faults
Outstanding Safety Recall Notice
Action RequiredOfficial DVSA telemetry indicates this vehicle has an unaddressed manufacturer safety recall. Remedial repairs are legally required to be carried out 100% free of charge by an authorised main dealer.
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.
LN20 FPP Key Findings
- 4 MOT tests recorded
- Outstanding manufacturer safety recall notice
- Latest MOT passed on 15/04/2026
- 20,676 miles recorded at latest MOT
- 1 historical MOT failure
- No defects recorded at the latest MOT
Derived directly from the recorded DVSA and DVLA data shown on this page.
LN20 FPP MOT History
Interpretation generated from the recorded test data above — not an official DVSA statement and not a substitute for an independent inspection.
4 MOT tests are recorded for this 2020 Mercedes-Benz B (LN20 FPP) between April 2024 and April 2026.
The record contains 3 passes and 1 failure.
The most recent test on 15 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: Brakes (1 issue), Windscreen (1 issue). Repeated mentions in one area can indicate an ongoing pattern worth checking in person.
In total 1 advisory notice is 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 Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 ”; “Nearside Front Anti-roll bar ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii))”; “Windscreen washer provides insufficient washer liquid (3.5 (a))”.
LN20 FPP Mileage History
- 11/04/202411,404 mi
- 16/04/202520,028 mi+8,624 mi
- 17/04/202520,039 mi+11 mi
- 15/04/202620,676 mi+637 mi
Average of roughly 4,614 miles per year across 4 recorded odometer readings.
Technical Specifications
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Diagnostic & Valuation Intelligence
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Known faults for Mercedes-Benz Mercedes-Benz B-Class (W247)
Our database tracks 3 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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Verified MOT failure trends, buying advice, and technical directory specifications.
Owner-reported defects, recurring MOT failure points, and estimated repair costs.
Browse production generations, registration statistics, and trim variants.
Historical MOT pass rates and DVLA records for 2020 model year cars.
- OM654d AdBlue dosing faults and no-restart countdownModerate
B 180d and B 200d cars use the OM654 2.0 diesel with an SCR system that Mercedes Club owners describe as fragile in UK winters: a failed pump, heater or NOx sensor triggers 'Check Service Now' plus an amber engine light, then a mileage countdown that ends with the engine refusing to restart. Carwow lists diesel stalling and reluctance to re-start among the recurring B-Class complaints. One member reported a failed AdBlue pump at 39,000 miles for around £300 fitted, and specialist garages warn the countdown cannot be reset by simply topping up the tank.
- Snapped coil springs and worn suspension joints at MOTModerate
DVSA MOT data analysed by Carpeep puts suspension as the second-largest failure category for the B-Class, at 22.4 per cent of all recorded failure items, with a fractured or broken coil spring the single most-common item at 6.8 per cent, followed by ball-joint dust covers no longer keeping dirt out (5.7 per cent) and split driveshaft gaiters (4.2 per cent). UK potholes plus the B-Class's tall, heavy nose accelerate the damage, and Carwow independently lists suspension problems among this car's recurring faults. Listen for knocks and check ride height on all four corners before viewing an older example.
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