Car statistics by year
2021 MG ZS
MG ZS cars first registered in 2021: how they did at their 2025 MOT, what failed them, how far they have been driven and how many are still on the road. Compared with every car first registered in 2021, so like is set against like.
- MOT first-time pass rate, 2025 86.6% All 2021 cars 88.4%
- Typical mileage at the MOT 29,500 miles; all 2021 cars 30,700
- Left at the end of 2025 14,473 98.8% of the 14,651 at the end of 2021
- Tests finding a dangerous defect 4.5% All 2021 cars 3.8%
- Tests with an advisory 41.7% All 2021 cars 33.1%
- MOT tests in 2025 15,157 normal tests in Great Britain
How do 2021 MG ZS cars do at their MOT?
In 2025, at about 4 years old, 86.6% of 2021 MG ZS MOT tests were passed first time, against 88.4% for all cars first registered in 2021. 2021 MG ZS cars did worse than average for their age, by 1.8 points. A year earlier the same cars passed 88.5% of the time (all 2021 cars 88.7%).
MOT pass rate by year of first registration: MG ZS vs all cars
Each pair of bars is one year of first registration, tested in 2025. Older cars pass less often, so compare each MG ZS bar with the all-cars bar beside it.
| First registered | MG ZS | All cars |
|---|---|---|
| ’18 | 74.6% | 81.8% |
| ’19 | 75.6% | 84.4% |
| ’20 | 81.1% | 86.9% |
| ’21 | 86.6% | 88.4% |
| ’22 | 85.3% | 89.4% |
Source:DVSA,UK Motoring analysis 2025 Updated
Most common MOT failures on the 2021 MG ZS
Brake pads: less than 1.5 mm thick was the most common single reason a 2021 MG ZS failed, on 12.2% of about 2,000 failed tests. By area of the car, tyres failed most often (33.5% of failed tests; all 2021 cars 41.9%). 4.5% of tests found at least one dangerous defect, against 3.8% for all cars first registered in 2021. A failed test can have several defects, so shares add up to more than 100%.
Most common reasons for failure
Share of failed tests with each defect. The same fault on any wheel or side counts once.
| Defect | Share of failed tests |
|---|---|
| Brake pads: less than 1.5 mm thick Brakes | 12.2% |
| Tyres: cut in excess of the requirements deep enough to reach the ply or cords Tyres | 11.7% |
| Tyres: tread depth below requirements of 1.6mm Tyres | 11.7% |
| Headlamp: not working on dipped beam Lamps, reflectors and electrical equipment | 7.8% |
| Wipers: does not clear the windscreen effectively Visibility | 6.8% |
| Tyres: ply or cords exposed Tyres | 5.8% |
| Brake discs: significantly and obviously worn Brakes | 5.4% |
| Coil spring: fractured or broken Suspension | 5.0% |
| Washers: provides insufficient washer liquid Visibility | 4.8% |
| Headlamp: not working on main beam Lamps, reflectors and electrical equipment | 4.4% |
Source:DVSA,UK Motoring analysis 2025 Updated
Failure categories: MG ZS vs all 2021 cars
The marker shows the share for all cars first registered the same year.
| Category | Share of failed tests |
|---|---|
| Tyres | 33.5% |
| Brakes | 27.2% |
| Lamps, reflectors and electrical equipment | 22.9% |
| Suspension | 13.6% |
| Visibility | 13.6% |
| Steering | 2.9% |
| Seat belts and supplementary restraint systems | 1.6% |
| Noise, emissions and leaks | 1.5% |
Source:DVSA,UK Motoring analysis 2025 Updated
Most common MOT advisories on the 2021 MG ZS
An advisory is something the tester noticed that did not fail the test but may need work soon. 41.7% of 2021 MG ZS tests had at least one (all 2021 cars 33.1%). These are the things to check on one you are thinking of buying.
Most common advisories
| Advisory | Share of tests |
|---|---|
| Brake discs: worn, pitted or scored, but not seriously weakened Brakes | 15.3% |
| Tread depth: worn close to legal limit or worn on edge Tyres | 14.6% |
| Tyres: slightly damaged or cracking or perishing Tyres | 7.6% |
| Brake pads: wearing thin Brakes | 7.1% |
| Child seat fitted not allowing full inspection of adult belt Non-component advisories | 4.0% |
| Nail in tyre Non-component advisories | 3.0% |
| Tyres: cut but not deep enough to reach the ply or cords Tyres | 2.5% |
| Service brake performance: binding but not excessively Brakes | 1.7% |
| Brake discs: worn, but not excessively Brakes | 1.7% |
| Suspension arms: ball joint has slight play Suspension | 1.4% |
Source:DVSA,UK Motoring analysis 2025 Updated
What mileage is normal for a 2021 MG ZS?
Half of the 2021 MG ZS cars tested in 2025 had covered fewer than 29,500 miles. A quarter had covered fewer than 21,500 and a quarter more than 39,100. For all cars first registered in 2021, the middle figure was 30,700 miles, so 2021 MG ZS cars have been driven 3.9% less far than average.
Mileage at the 2025 MOT
Odometer readings at each car’s latest MOT of the year. The bar covers the middle half of cars; the line the middle 80%.
| 10% | 25% | Median | 75% | 90% | Cars | |
|---|---|---|---|---|---|---|
| 2021 MG ZS | 15,200 | 21,500 | 29,500 | 39,100 | 50,200 | 14,456 |
| All 2021 cars | 14,300 | 21,300 | 30,700 | 42,500 | 56,500 | 1,457,950 |
Source:DVSA,UK Motoring analysis 2025 Updated
How many 2021 MG ZS cars are left?
At the end of 2021, 14,651 2021 MG ZS cars were on the DVLA record in the United Kingdom. By the end of 2025, 14,473 were: 14,384 licensed and 89 declared off the road (SORN). That is 98.8% still on the record, against 96.0% for all cars first registered in 2021.
Share still on the record since 2021
Cars licensed or SORN at each year end, as a share of the number at the end of 2021. Cars scrapped or exported leave the record. Late registrations and imports can push the share above 100%.
| Year end | 2021 MG ZS | All 2021 cars |
|---|---|---|
| 2021 | 100.0% | 100.0% |
| 2022 | 96.5% | 98.4% |
| 2023 | 97.3% | 97.6% |
| 2024 | 96.6% | 94.7% |
| 2025 | 98.8% | 96.0% |
Source:DfT / DVLA End of 2025 Updated
Other years of the MG ZS
5 years of the MG ZS, by year of first registration, have their own page with MOT results, common faults, mileage and how many are left. Against all cars of the same age, the 2021 cars did best at their 2025 MOT (86.6% passed first time) and the 2019 cars worst (75.6%).
| Year | Registered | Left | Pass rate |
|---|---|---|---|
| 2018 | 5,253 | 5,061 | 74.6% |
| 2019 | 8,327 | 8,344 | 75.6% |
| 2020 | 12,139 | 11,883 | 81.1% |
| 2021 | 14,651 | 14,473 | 86.6% |
| 2022 | 18,117 | 17,207 | 85.3% |
Registered: cars on the DVLA record at the end of the year they were first registered. Left: licensed or declared SORN at the end of 2025. Both cover the United Kingdom. Pass rate: first-time passes at normal MOT tests in Great Britain in 2025; all cars: every car first registered the same year.
Data sources and methodology
| Figures | Source | Period | Records | Updated |
|---|---|---|---|---|
| MOT results and mileage | Anonymised MOT tests and results Driver and Vehicle Standards Agency Derived statistics UK Motoring | 2025 | 15,157 MOT tests of 2021 MG ZS cars | 15 September 2026 |
| Cars on the record | Vehicle licensing statistics Department for Transport | End of 2025 | 14,473 cars still on the record (licensed or SORN) | 15 September 2026 |
- MOT figures cover normal tests in Great Britain in 2025 of MG ZS cars first registered in 2021; retests are excluded. “All cars” means every car we match to a model, first registered in 2021.
- Year of first registration is DVSA’s first-use date: when the car was first registered, in the UK or abroad.
- Defects and advisories are DVSA’s descriptions made readable. Where on the car a defect was found (side, front or rear) is ignored, so the same fault on any wheel counts once per test.
- Mileage is the odometer reading at each car’s latest normal MOT of the year, as recorded by the tester. A few readings are in kilometres or mistyped; percentiles are not thrown by a handful of outliers.
- Cars on the record come from DfT table VEH0124 and cover the United Kingdom, including Northern Ireland; MOT figures cover Great Britain only.
- DVSA records the model name typed in at the test. We match those names to DVLA’s generic models, so a handful of tests may be counted under a close relative.
Contains public sector information licensed under the Open Government Licence v3.0.