2020 Audi A4 2.0L Diesel · SM51 NNN
2020 Audi A4 (2.0L, diesel). First registered 29 Aug 2020. Recorded mileage 54,395 miles. MOT valid until 02 Sept 2027.
- Make & Model
- AUDI A4
- Year / Origin
- 2020 · Edinburgh
- Safety Recall
- Unknown
- MOT Status
- Valid until 02 Sept 2027
- Road Tax
- —
- Recorded Mileage
- 54,395 mi
- ULEZ Compliance
- ULEZ Compliant (Euro 6 Diesel)
- Fuel & Engine
- Diesel · 2.0L
- 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.
SM51 NNN Key Findings
- 5 MOT tests recorded
- Latest MOT passed on 01/09/2026
- 54,395 miles recorded at latest MOT
- 3 defects noted at the latest MOT
- Recurring suspension items (2 mentions)
Derived directly from the recorded DVSA and DVLA data shown on this page.
SM51 NNN 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 2020 Audi A4 (SM51 NNN) between January 2023 and September 2026.
The record contains 5 passes and 0 failures.
The record shows no MOT failures, although 6 advisory notices note items to monitor.
Across all tests, the most frequently flagged areas are: Suspension (2 issues), Tyres (2 issues), Brakes (1 issue). Repeated mentions in one area can indicate an ongoing pattern worth checking in person.
In total 6 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.
SM51 NNN Mileage History
- 31/01/202321,774 mi
- 22/01/202430,764 mi+8,990 mi
- 06/01/202539,900 mi+9,136 mi
- 04/09/202545,540 mi+5,640 mi
- 01/09/202654,395 mi+8,855 mi
Average of roughly 9,104 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 Audi Audi A4 Mk5 (B9)
Our database tracks 4 specific mechanical faults and recurring failure patterns identified across UK MOT testing stations for this generation.
MOT Roadworthiness: Excellent
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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AUDI A4 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 2020 model year cars.
- Water Pump / Thermostat LeaksModerate
Later petrol and diesel engines still suffer coolant leaks from pumps or plastic thermostat housings.
- AdBlue SCR System NOx Sensor & Tank Heater FailureSerious
On 2.0 TDI and 3.0 TDI diesel models, failing downstream NOx sensors or crystallized AdBlue dosing injectors trigger a persistent dashboard no-restart countdown.
- Front Suspension Multi-Link Upper Control Arm Bushing WearModerate
The five-link front suspension utilizes rubber-metal hydro-bushings on the upper control arms that crack and tear, leading to vague high-speed steering and knocking over potholes.
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