2021 Audi A4 2.9L Petrol · BL21 MYZ
2021 Audi A4 (2.9L, petrol). First registered 27 May 2021. Recorded mileage 28,746 miles. MOT expired on 26 May 2026.
- Make & Model
- AUDI A4
- Year / Origin
- 2021 · Birmingham
- Safety Recall
- Unknown
- MOT Status
- Expired on 26 May 2026
- Road Tax
- —
- Recorded Mileage
- 28,746 mi
- ULEZ Compliance
- ULEZ Compliant (Euro 4+)
- Fuel & Engine
- Petrol · 2.9L
- 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.
BL21 MYZ Key Findings
- 3 MOT tests recorded
- Latest MOT passed on 13/05/2025
- 28,746 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.
BL21 MYZ MOT History
Interpretation generated from the recorded test data above — not an official DVSA statement and not a substitute for an independent inspection.
3 MOT tests are recorded for this 2021 Audi A4 (BL21 MYZ) between May 2024 and May 2025.
The record contains 2 passes and 1 failure.
The most recent test on 13 May 2025 was a pass, although the earlier record includes 1 failure that buyers may want to investigate.
BL21 MYZ Mileage History
- 10/05/202417,158 mi
- 13/05/202528,746 mi+11,588 mi
- 13/05/202528,746 mi
Average of roughly 11,502 miles per year across 3 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: Below 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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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.
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Historical MOT pass rates and DVLA records for 2021 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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