Audi A4 (2015)
2015 Audi A4
CarHunch analysed 18,479 real MOT records for the 2015 Audi A4. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
The 2015 Audi A4 passes its MOT first time at 85.1%, which beats the UK average of 80%, but nearly 39% of these cars have recorded a dangerous defect at some point—a significant concern for any buyer. Petrol versions show a notably stronger 88.7% pass rate compared to diesels at 84.6%, suggesting the petrol engines are proving more durable in this generation.
At a median mileage of around 69,000 miles, these cars are showing typical wear for their age, and while they average 1.43 failures per test, the real issue is the high tally of 9.4 advisories per vehicle, indicating persistent minor faults accumulating over time. Before buying, get a pre-purchase inspection done focusing on suspension, electrics, and cooling systems—the advisory pattern suggests these areas are where the A4's complexity catches up with owners.
What to check before buying a 2015 Audi A4
Practical pre-purchase checks for this age and model.
- 📋 Check the full MOT history. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. Enter the reg below for a full AI analysis.
- 🔍 Inspect for corrosion in person. Brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that's expensive to fix and can fail an MOT.
- 🛞 Check tyres and brakes. The most common advisory items at this age. Budget for replacement if they're near the limit — factor this into your offer price.
- ⚠️ 38.6% of these vehicles have had a dangerous defect recorded. Enter the reg below — the full MOT history will show exactly what was flagged and whether it was resolved.
- 📄 Run an HPI check. The MOT history won't show outstanding finance, insurance write-offs, or stolen status — an HPI check will.
Before you buy a Audi A4
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Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Diesel (88%) | 16,226 | 84.6% | 1.48 |
| Petrol (12%) | 2,250 | 88.7% | 1.07 |
| Diesel (0%) | 2 | 100% | 0 |
| Other (0%) | 1 | 100% | 0 |
Mileage Distribution
Most 2015 Audi A4 vehicles sit in the blue band. If the car you're looking at is outside it, it's either unusually low or high mileage for its age.
Half of all 2015 Audi A4 vehicles fall between 53,886 and 88,602 miles.
2015 Audi A4 — Still on the Road
Strong survival — 15,488 vehicles still getting MOTs in 2025, 88% of the peak.
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2018–2025.
MOT History Averages
Most Common MOT Issues — 2015 Audi A4
Based on actual MOT test records for this model. Percentage shows how often each item appears across all vehicles in this cohort.
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51.8%
Nearside Front Tyre worn close to legal limit/worn on edge
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51%
Offside Front Tyre worn close to legal limit/worn on edge
-
33.8%
Nearside Rear Tyre worn close to legal limit/worn on edge
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32.5%
Offside Rear Tyre worn close to legal limit/worn on edge
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31.3%
Rear Brake pad(s) wearing thin
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24%
Front Brake pad(s) wearing thin
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19.3%
Nearside Rear Child Seat fitted not allowing full inspection of adult belt ()
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15.5%
Front Brake disc worn, pitted or scored, but not seriously weakened
Data covers a 3-year window centred on 2015. Counts include advisories and failures.
Found a specific Audi A4?
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