2020 Fiat 500 Rockstar Mhev — MOT failures & pass rate
Across 1,319 MOT tests analysed for the 2020 Fiat 500 Rockstar Mhev, the most common recorded failure areas were tyres, visibility and lighting & signalling. Its pass rate of 90.1% was in line with the average for cars of a similar age (90.5%).
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 7.4% | 98 |
| 2 | Visibility | 3.6% | 47 |
| 3 | Lighting & signalling | 1.8% | 24 |
| 4 | Suspension | 1.2% | 16 |
| 5 | Brakes | 0.8% | 10 |
| 6 | Emissions & environmental | 0.5% | 7 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Wipers | 37 |
| 2 | Washers | 23 |
| 3 | Tread depth | 19 |
| 4 | Shock absorbers | 10 |
| 5 | Tyre pressure monitoring system | 10 |
| 6 | Headlamp aim | 8 |
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 | 23.5% | 310 |
| 2 | Brakes | 7.0% | 92 |
| 3 | Suspension | 4.0% | 53 |
| 4 | Other defects | 3.0% | 39 |
| 5 | Visibility | 2.1% | 27 |
| 6 | Lighting & signalling | 0.5% | 7 |
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 | 1,111 | 8.4% |
| 30-60k | 200 | 18.0% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2023 | 440 | 10.0% |
| 2024 | 435 | 10.3% |
| 2025 | 443 | 9.5% |
What to check before buying a 2020 500 Rockstar Mhev
Before buying a 2020 Fiat 500 Rockstar Mhev, focus on the areas it most often fails on. Tyres accounted for 7.4% of tests for this year.
- Tyres (7.4% 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.
- Visibility (3.6% 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.
- 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 2020 Fiat 500 Rockstar Mhevs pass their MOT?
90.1% of the 1,319 2020 Fiat 500 Rockstar Mhev MOT tests in this dataset passed — a 9.9% fail rate.
What is the most common MOT failure on a 2020 Fiat 500 Rockstar Mhev?
Tyres, recorded in 7.4% of tests, followed by visibility (3.6%).
Does the 2020 500 Rockstar Mhev get worse with mileage?
Its MOT fail rate rises from 8.4% in the 0-30k band to 18.0% in the 30-60k band.
Methodology & source. Based on 1,319 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.