2020 Fiat 500 Rockstar — MOT failures & pass rate
Across 2,454 MOT tests analysed for the 2020 Fiat 500 Rockstar, the most common recorded failure areas were tyres, lighting & signalling and visibility. Its pass rate of 88.6% was below the average for cars of a similar age (90.6%). Higher-mileage examples failed more often — 17.9% in the 60-90k group versus 8.8% in the 0-30k group.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 4.9% | 120 |
| 2 | Lighting & signalling | 4.6% | 112 |
| 3 | Visibility | 3.5% | 87 |
| 4 | Brakes | 3.1% | 75 |
| 5 | Suspension | 2.2% | 55 |
| 6 | Emissions & environmental | 0.4% | 11 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Wipers | 58 |
| 2 | Headlamp aim | 46 |
| 3 | Headlamp | 46 |
| 4 | Washers | 45 |
| 5 | Brake discs | 44 |
| 6 | Shock absorbers | 30 |
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 | 21.8% | 535 |
| 2 | Brakes | 15.7% | 386 |
| 3 | Suspension | 9.3% | 227 |
| 4 | Other defects | 4.0% | 98 |
| 5 | Visibility | 2.6% | 65 |
| 6 | Road wheels | 0.9% | 23 |
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 | 1,320 | 8.8% |
| 30-60k | 1,017 | 14.0% |
| 60-90k | 117 | 17.9% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2023 | 773 | 10.3% |
| 2024 | 892 | 11.2% |
| 2025 | 762 | 12.7% |
What to check before buying a 2020 500 Rockstar
Before buying a 2020 Fiat 500 Rockstar, focus on the areas it most often fails on. Tyres accounted for 4.9% of tests for this year.
- Tyres (4.9% 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.
- Lighting & signalling (4.6% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Visibility (3.5% of tests): Wipers, washers, mirrors and screen damage — usually inexpensive, but check for chips in the driver's line of sight. Typical repair: £15–£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 2020 Fiat 500 Rockstars pass their MOT?
88.6% of the 2,454 2020 Fiat 500 Rockstar MOT tests in this dataset passed — a 11.4% fail rate.
What is the most common MOT failure on a 2020 Fiat 500 Rockstar?
Tyres, recorded in 4.9% of tests, followed by lighting & signalling (4.6%).
Does the 2020 500 Rockstar get worse with mileage?
Its MOT fail rate rises from 8.8% in the 0-30k band to 17.9% in the 60-90k band.
Methodology & source. Based on 2,454 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.