2021 Citroen C5 Aircross Shine + Ptech Ss A — MOT failures & pass rate
Across 912 MOT tests analysed for the 2021 Citroen C5 Aircross Shine + Ptech Ss A, the most common recorded failure areas were tyres, brakes and lighting & signalling. Its pass rate of 91.8% was in line with the average for cars of a similar age (91.2%).
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 4.8% | 44 |
| 2 | Brakes | 2.9% | 26 |
| 3 | Lighting & signalling | 2.0% | 18 |
| 4 | Visibility | 1.2% | 11 |
| 5 | Seat belts & restraints | 0.5% | 5 |
| 6 | Body, structure & corrosion | 0.1% | 1 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Brake pads | 24 |
| 2 | Headlamp aim | 19 |
| 3 | Brake discs | 10 |
| 4 | Tread depth | 9 |
| 5 | Washers | 9 |
| 6 | Wipers | 3 |
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 | 26.4% | 241 |
| 2 | Brakes | 16.3% | 149 |
| 3 | Other defects | 8.3% | 76 |
| 4 | Body, structure & corrosion | 1.4% | 13 |
| 5 | Visibility | 1.3% | 12 |
| 6 | Lighting & signalling | 0.7% | 6 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 0-30k | 564 | 7.4% |
| 30-60k | 340 | 9.7% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2024 | 460 | 8.9% |
| 2025 | 434 | 7.4% |
What to check before buying a 2021 C5 Aircross Shine + Ptech Ss A
Before buying a 2021 Citroen C5 Aircross Shine + Ptech Ss A, focus on the areas it most often fails on. Tyres accounted for 4.8% of tests for this year.
- Tyres (4.8% 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.
- Brakes (2.9% of tests): Pads/discs are routine wear; binding, imbalance or corroded pipes are more serious — test for pulling under braking. Typical repair: £100–£350 per axle.
- Lighting & signalling (2.0% 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 2021 Citroen C5 Aircross Shine + Ptech Ss As pass their MOT?
91.8% of the 912 2021 Citroen C5 Aircross Shine + Ptech Ss A MOT tests in this dataset passed — a 8.2% fail rate.
What is the most common MOT failure on a 2021 Citroen C5 Aircross Shine + Ptech Ss A?
Tyres, recorded in 4.8% of tests, followed by brakes (2.9%).
Does the 2021 C5 Aircross Shine + Ptech Ss A get worse with mileage?
Its MOT fail rate rises from 7.4% in the 0-30k band to 9.7% in the 30-60k band.
Methodology & source. Based on 912 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-01. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.