2017 Mercedes-Benz B-Class 2.1L Diesel · RM56 RED
2017 Mercedes-Benz B-Class (2.1L, diesel). First registered 16 Dec 2017. Recorded mileage 63,498 miles. MOT valid until 15 Dec 2026.
- Make & Model
- MERCEDES-BENZ B-CLASS
- Year / Origin
- 2017 · Reading
- Safety Recall
- Unknown
- MOT Status
- Valid until 15 Dec 2026
- Road Tax
- —
- Recorded Mileage
- 63,498 mi
- ULEZ Compliance
- ULEZ Compliant (Euro 6 Diesel)
- Fuel & Engine
- Diesel · 2.1L
- 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.
RM56 RED Key Findings
- 5 MOT tests recorded
- Latest MOT passed on 16/12/2025
- 63,498 miles recorded at latest MOT
- 2 historical MOT failures
- No defects recorded at the latest MOT
- Recurring tyres items (5 mentions)
Derived directly from the recorded DVSA and DVLA data shown on this page.
RM56 RED 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 (RM56 RED) between January 2024 and December 2025.
The record contains 3 passes and 2 failures.
The most recent test on 16 December 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 (5 issues), Lighting (1 issue), Suspension (1 issue). Repeated mentions in one area can indicate an ongoing pattern worth checking in person.
In total 3 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))”; “Offside Front Tyre tread depth below requirements of 1.6mm (5.2.3 (e))”; “Tyre pressure monitoring system malfunctioning or obviously inoperative (5.2.3 (h))”.
RM56 RED Mileage History
- 24/01/202455,083 mi
- 21/02/202455,196 mi+113 mi
- 20/03/202561,131 mi+5,935 mi
- 08/04/202561,325 mi+194 mi
- 16/12/202563,498 mi+2,173 mi
Average of roughly 4,440 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: 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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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.
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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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