2020 Mg Zs Excite Ev — MOT failures & pass rate
Across 2,463 MOT tests analysed for the 2020 Mg Zs Excite Ev, the most common recorded failure areas were lighting & signalling, tyres and visibility. Its pass rate of 89.4% was below the average for cars of a similar age (90.7%). Higher-mileage examples failed more often — 21.8% in the 60-90k group versus 6.9% in the 0-30k group.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 6.6% | 163 |
| 2 | Tyres | 4.8% | 119 |
| 3 | Visibility | 2.2% | 54 |
| 4 | Brakes | 1.9% | 48 |
| 5 | Suspension | 0.7% | 18 |
| 6 | Steering | 0.4% | 10 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Headlamp | 153 |
| 2 | Headlamp aim | 43 |
| 3 | Tread depth | 35 |
| 4 | Wipers | 33 |
| 5 | Brake discs | 31 |
| 6 | Washers | 27 |
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% | 536 |
| 2 | Brakes | 13.5% | 332 |
| 3 | Other defects | 8.6% | 211 |
| 4 | Suspension | 3.8% | 93 |
| 5 | Visibility | 3.2% | 78 |
| 6 | Lighting & signalling | 1.9% | 47 |
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 | 1,261 | 6.9% |
| 30-60k | 998 | 13.0% |
| 60-90k | 179 | 21.8% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 33 | 3.0% |
| 2022 | 84 | 4.8% |
| 2023 | 756 | 8.7% |
| 2024 | 794 | 11.2% |
| 2025 | 796 | 12.7% |
What to check before buying a 2020 Zs Excite Ev
Before buying a 2020 Mg Zs Excite Ev, focus on the areas it most often fails on. Lighting & signalling accounted for 6.6% of tests for this year.
- Lighting & signalling (6.6% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- 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.
- Visibility (2.2% 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 Mg Zs Excite Evs pass their MOT?
89.4% of the 2,463 2020 Mg Zs Excite Ev MOT tests in this dataset passed — a 10.6% fail rate.
What is the most common MOT failure on a 2020 Mg Zs Excite Ev?
Lighting & signalling, recorded in 6.6% of tests, followed by tyres (4.8%).
Does the 2020 Zs Excite Ev get worse with mileage?
Its MOT fail rate rises from 6.9% in the 0-30k band to 21.8% in the 60-90k band.
Methodology & source. Based on 2,463 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.