2021 Mercedes-Benz Unknown 2.1L Diesel · HX21 DYG
2021 Mercedes-Benz Unknown (2.1L, diesel). First registered 01 Apr 2021. Recorded mileage 30,583 miles. MOT expired on 13 Sept 2026. Taxed until 01 Sept 2027.
- Make & Model
- MERCEDES-BENZ UNKNOWN
- Year / Origin
- 2021 · Portsmouth
- Safety Recall
- Unknown
- MOT Status
- Expired on 13 Sept 2026
- Road Tax
- Taxed (01 Sept 2027)
- Recorded Mileage
- 30,583 mi
- ULEZ Compliance
- ULEZ Compliant (Euro 6)
- Fuel & Engine
- DIESEL · 2.1L
- Reliability Guide
- Common Faults
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HX21 DYG Key Findings
- 2 MOT tests recorded
- Latest MOT passed on 15/09/2025
- 30,583 miles recorded at latest MOT
- 1 defect noted at the latest MOT
Derived directly from the recorded DVSA and DVLA data shown on this page.
HX21 DYG MOT History
Interpretation generated from the recorded test data above — not an official DVSA statement and not a substitute for an independent inspection.
2 MOT tests are recorded for this 2021 Mercedes-Benz Unknown (HX21 DYG) between September 2024 and September 2025.
The record contains 2 passes and 0 failures.
The record shows no MOT failures, although 1 advisory notice notes an item to monitor.
Across all tests, the most frequently flagged areas are: Brakes (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.
HX21 DYG Mileage History
- 11/09/202428,127 mi
- 15/09/202530,583 mi+2,456 mi
Average of roughly 2,430 miles per year across 2 recorded odometer readings.
Technical Specifications
Core Specifications
Identification & Status
Dimensions & Weights
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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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Buyer's Guide & Inspection Advisory
Expert automotive synthesis from historical MOT defect records and market benchmarks.
Our Verdict
This is a relatively low-risk purchase f
When viewing this vehicle, verify the service history to ensure the 2.1L diesel engine has been maintained according to manufacturer intervals. While the MOT history is clean, the 2025 advisory regarding front brake discs suggests that you should check the remaining life of the rear brakes and pads to avoid immediate post-purchase costs.
Given the Euro VI D diesel engine, check that the vehicle has been used for a variety of driving conditions to prevent issues with the Diesel Particulate Filter (DPF). Ask the seller for proof of any recent servicing that might have addressed the brake wear noted in the September 2025 test.
As a 2143cc diesel, this vehicle is likely to offer efficient motorway cruising, though running costs will depend on the specific model's weight and aerodynamics. Being Euro VI D compliant, it is compatible with most UK Ultra Low Emission Zones (ULEZ) and Clean Air Zones (CAZ), avoiding daily charge penalties.
Insurance groups for Mercedes-Benz vehicles of this age typically sit in the mid-to-high range. Expect maintenance costs to be aligned with premium German brands, particularly regarding brake components and specialized diesel engine servicing. Estimated annual running costs are moderate for a diesel executive-class vehicle.
Focus your inspection on the braking system. The 2025 MOT recorded a front brake disc that was worn, albeit not excessively, so you should visually inspect the thickness of the discs and the condition of the pads.
Additionally, inspect the tyres for even wear, which can indicate suspension or alignment issues. Because this is a diesel vehicle, listen for any unusual noises from the engine bay during a cold start and check the underside for any signs of fluid leaks that might not have been captured in the MOT advisory.
Registered in April 2021, this silver Mercedes-Benz has covered 30,583 miles as of its most recent MOT in September 2025. The vehicle has undergone two MOT tests, passing both without any major failures. The mileage is consistent with typical usage for a five-year-old diesel vehicle, and the most recent record notes minor brake disc wear.
No aggregate reliability data is currently available for this specific Mercedes-Benz model variant to provide a comparative benchmark.
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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