2017 Mercedes-Benz B-Class 1.5L Diesel · KM66 FTX
2017 Mercedes-Benz B-Class (1.5L, diesel). First registered 27 Jan 2017. Recorded mileage 88,463 miles. MOT valid until 14 Sept 2027.
- Make & Model
- MERCEDES-BENZ B-CLASS
- Year / Origin
- 2017 · Northampton
- Safety Recall
- Unknown
- MOT Status
- Valid until 14 Sept 2027
- Road Tax
- —
- Recorded Mileage
- 88,463 mi
- ULEZ Compliance
- ULEZ Compliant (Euro 6 Diesel)
- Fuel & Engine
- Diesel · 1.5L
- 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.
KM66 FTX Key Findings
- 5 MOT tests recorded
- Latest MOT passed on 16/09/2026
- 88,463 miles recorded at latest MOT
- 1 historical MOT failure
- No defects recorded at the latest MOT
- Recurring tyres items (4 mentions)
Derived directly from the recorded DVSA and DVLA data shown on this page.
KM66 FTX 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 2017 Mercedes-Benz B-Class (KM66 FTX) between January 2024 and September 2026.
The record contains 4 passes and 1 failure.
The most recent test on 16 September 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: Tyres (4 issues), Lighting (1 issue), Suspension (1 issue). Repeated mentions in one area can indicate an ongoing pattern worth checking in person.
In total 5 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: “Nearside Rear Coil spring fractured or broken (5.3.1 (b) (i))”.
KM66 FTX Mileage History
- 25/01/202470,687 mi
- 24/01/202578,657 mi+7,970 mi
- 24/01/202578,657 mi
- 14/01/202685,969 mi+7,312 mi
- 16/09/202688,463 mi+2,494 mi
Average of roughly 6,728 miles per year across 5 recorded odometer readings.
Technical Specifications
Core Specifications
Identification & Status
Dimensions & Weights
Diagnostic & Valuation Intelligence
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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: 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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MERCEDES-BENZ B-CLASS Model Intelligence & Reliability
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 2017 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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