Audi A3 Sport TDI (2015)
2015 Audi A3 Sport TDI
CarHunch analysed 877 real MOT records for the 2015 Audi A3 Sport TDI. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
The 2015 Audi A3 Sport TDI passes its MOT on the first attempt just 75.4% of the time, trailing the UK average of 80% by a meaningful margin. The good news is that dangerous defects are essentially non-existent in this cohort, and the diesel variant (which makes up 99% of the data) shows no material difference in pass rate at 75.2%.
These cars are running at a median of 87,948 miles, which is reasonable for a nine-year-old vehicle, yet they're still picking up an average of 0.34 failures per test—suggesting routine wear items rather than catastrophic problems. If you're considering one, factor in that roughly one in four will need some work before it passes its next MOT, and budget accordingly for the inevitable suspension, brake, and emissions-related repairs that diesel engines in this age bracket typically demand.
What to check before buying a 2015 Audi A3 Sport TDI
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.
- 📄 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 A3 Sport TDI
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Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Diesel (99%) | 869 | 75.3% | 0.34 |
| Gas Bi-Fuel (1%) | 7 | 92.9% | 0.43 |
| Other (0%) | 1 | 100% | 0 |
Mileage Distribution
Most 2015 Audi A3 Sport TDI 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 A3 Sport TDI vehicles fall between 70,590 and 103,617 miles.
2015 Audi A3 Sport TDI — Still on the Road
Strong survival — 594 vehicles still getting MOTs in 2025, 100% of the peak.
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2019–2025.
MOT History Averages
Found a specific Audi A3 Sport TDI?
Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.