Audi A6 (2015)
2015 Audi A6
CarHunch analysed 13,521 real MOT records for the 2015 Audi A6. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
The 2015 Audi A6 passes its first MOT significantly better than the UK average, with an 88.6% pass rate against the national 80%, but nearly 30% of these cars have recorded a dangerous defect at some point—a substantial buyer concern that warrants a pre-purchase inspection. Petrol versions are slightly more reliable (91.8% pass rate) than diesel (88.4%), though diesel dominates the cohort at 94% of vehicles analysed.
At 71,000 miles median, these A6s show typical wear for their age, yet owners should expect roughly one failure and seven advisories per test cycle on average. The high advisory count suggests routine maintenance issues rather than catastrophic problems, so budget for regular servicing and check the service history carefully before purchasing—this is a car that rewards consistent upkeep.
Petrol vs Diesel
Pass rate difference of 3.4 percentage points — worth knowing if you're choosing between the two.
What to check before buying a 2015 Audi A6
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.
- ⚠️ 29.1% 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 A6
MOT history is one piece of the puzzle. These checks can reveal what CarHunch can't.
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Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Diesel (94%) | 12,718 | 88.4% | 1 |
| Petrol (6%) | 803 | 91.8% | 0.6 |
Mileage Distribution
Most 2015 Audi A6 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 A6 vehicles fall between 55,198 and 91,609 miles.
2015 Audi A6 — Still on the Road
Strong survival — 10,586 vehicles still getting MOTs in 2025, 83% 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 A6
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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46.7%
Nearside Front Tyre worn close to legal limit/worn on edge
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46.7%
Offside Front Tyre worn close to legal limit/worn on edge
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34.1%
Nearside Rear Tyre worn close to legal limit/worn on edge
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32.6%
Offside Rear Tyre worn close to legal limit/worn on edge
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23.5%
Rear Brake pad(s) wearing thin
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21.1%
Front Brake pad(s) wearing thin
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17.2%
Nearside Rear Child Seat fitted not allowing full inspection of adult belt ()
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15.4%
Windscreen damaged but not adversely affecting driver's view
Data covers a 3-year window centred on 2015. Counts include advisories and failures.
Found a specific Audi A6?
Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.