2020 Mg Zs Exclusive Vti- — MOT failures & pass rate
Across 3,628 MOT tests analysed for the 2020 Mg Zs Exclusive Vti-, the most common recorded failure areas were brakes, tyres and lighting & signalling. Its pass rate of 89.8% was in line with the average for cars of a similar age (90.5%). Higher-mileage examples failed more often — 19.7% in the 60-90k group versus 8.4% in the 0-30k group.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Brakes | 6.1% | 221 |
| 2 | Tyres | 2.4% | 88 |
| 3 | Lighting & signalling | 2.0% | 71 |
| 4 | Suspension | 1.5% | 53 |
| 5 | Visibility | 1.4% | 51 |
| 6 | Steering | 0.5% | 17 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Service brake performance | 112 |
| 2 | Brake pads | 95 |
| 3 | Brake discs | 79 |
| 4 | Headlamp aim | 69 |
| 5 | Rbt (sp) | 41 |
| 6 | Wheel bearings | 39 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Brakes | 25.1% | 911 |
| 2 | Tyres | 16.0% | 582 |
| 3 | Other defects | 9.4% | 343 |
| 4 | Suspension | 3.8% | 138 |
| 5 | Visibility | 2.5% | 89 |
| 6 | Emissions & environmental | 1.2% | 44 |
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 | 2,262 | 8.4% |
| 30-60k | 1,287 | 12.7% |
| 60-90k | 76 | 19.7% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2023 | 1,179 | 8.8% |
| 2024 | 1,200 | 10.4% |
| 2025 | 1,242 | 11.3% |
What to check before buying a 2020 Zs Exclusive Vti-
Before buying a 2020 Mg Zs Exclusive Vti-, focus on the areas it most often fails on. Brakes accounted for 6.1% of tests for this year.
- Brakes (6.1% 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.
- Tyres (2.4% 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.
- 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 2020 Mg Zs Exclusive Vti-s pass their MOT?
89.8% of the 3,628 2020 Mg Zs Exclusive Vti- MOT tests in this dataset passed — a 10.2% fail rate.
What is the most common MOT failure on a 2020 Mg Zs Exclusive Vti-?
Brakes, recorded in 6.1% of tests, followed by tyres (2.4%).
Does the 2020 Zs Exclusive Vti- get worse with mileage?
Its MOT fail rate rises from 8.4% in the 0-30k band to 19.7% in the 60-90k band.
Methodology & source. Based on 3,628 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.