2014 Audi RS6 — MOT failures & pass rate
Across 628 MOT tests, the 2014 Audi RS6 recorded an 88.5% pass rate. Executive cars of a similar age fail 15.5% of the time, so this is 4.0pp better than the group it competes with. Failures cluster in tyres, emissions & environmental and lighting & signalling.
What the MOT record shows
Tyres dominates the failure mix at 6.5% of all tests — 4.0 points clear of emissions & environmental, so it is the first thing to check.
At component level the recurring items are catalyst emissions, brake discs and pins and bushes — catalyst emissions alone was recorded 21 times.
Mileage matters less than usual here: the 2014 RS6 fails 10.3% of the time in the 30-60k band and 11.6% at 90-120k, a spread of only 1.3 points.
Advisories point at the next bill rather than this one: tyres was flagged on 11.5% of tests without failing them.
The trend is worsening — 9.4% of tests failed in 2021 against 11.6% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 6.5% | 41 |
| 2 | Emissions & environmental | 2.5% | 16 |
| 3 | Lighting & signalling | 1.8% | 11 |
| 4 | Brakes | 1.8% | 11 |
| 5 | Suspension | 1.6% | 10 |
| 6 | Road wheels | 1.3% | 8 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Catalyst emissions | 21 |
| 2 | Brake discs | 9 |
| 3 | Pins and bushes | 9 |
| 4 | Brake pads | 7 |
| 5 | Malfunction indicator lamp | 7 |
| 6 | Tyre pressure monitoring system | 6 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Tyres | 11.5% | 72 |
| 2 | Suspension | 9.2% | 58 |
| 3 | Brakes | 8.6% | 54 |
| 4 | Other defects | 4.0% | 25 |
| 5 | Visibility | 2.1% | 13 |
| 6 | Body, structure & corrosion | 1.3% | 8 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 30-60k | 252 | 10.3% |
| 60-90k | 274 | 11.7% |
| 90-120k | 69 | 11.6% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 128 | 9.4% |
| 2022 | 124 | 11.3% |
| 2023 | 130 | 12.3% |
| 2024 | 125 | 12.8% |
| 2025 | 121 | 11.6% |
What to check before buying a 2014 RS6
On a 2014 RS6, tyres is what the MOT record says goes wrong most — it appeared in 6.5% of tests. Check these areas before you commit.
- Tyres (6.5% of tests): Usually a quick, known-cost fix, but check tread, age and uneven wear (which can hint at alignment or suspension issues). Typical repair: £50–£120 per tyre.
- Emissions & environmental (2.5% of tests): More common on older diesels (DPF/EGR) — can be expensive; check for warning lights and smoke. Typical repair: £100–£600.
- Lighting & signalling (1.8% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.
Frequently asked questions
How many 2014 Audi RS6s pass their MOT?
88.5% of the 628 2014 Audi RS6 MOT tests in this dataset passed — a 11.5% fail rate.
What is the most common MOT failure on a 2014 Audi RS6?
Tyres, recorded in 6.5% of tests, followed by emissions & environmental (2.5%).
Does the 2014 RS6 get worse with mileage?
Its MOT fail rate rises from 10.3% in the 30-60k band to 11.6% in the 90-120k band.
Methodology & source. Based on 628 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-27. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.