MOT data
MG ZT MOT fail rate by age and year
DVSA MOT tests 2022–2025 · 7,721 MOT tests · Updated
At 18 years, 38.8% of MG ZT MOT tests ended in a fail (adjusted to typical mileage), against 44.3% for all class 4 vehicles tested at 18 (1,751 MOT tests) [1].
Buying Report £14.99 incl. VAT · one car · no subscription · Not a mechanical inspection.
- Mileage: median 101,658 miles at 18 years against 105,218 for all class 4 vehicles, 1,751 MOT tests
- Before the mileage adjustment: 38.2% of MOT tests at 18 years ended in a fail, 1,751 MOT tests
- All ages: 7,721 MOT tests from 2022 to 2025, ages 18 to 21
Which engine and year a car has decides which of these apply. Check the reg first.
Figures are for the model, not one car, and compare with all class 4 vehicles tested at 18 in the same test year.
- Fail rate at 18 years, typical mileage
- 38.8%
- vs 44.3% for all class 4 vehicles tested at 18
- 1,751 MOT tests
- Fail rate at 18 years, raw
- 38.2%
- vs 44.3% for all class 4 vehicles tested at 18
- 1,751 MOT tests
- Median mileage at 18 years
- 101,658 mi
- vs 105,218 mi for all class 4 vehicles
- 1,751 MOT tests
MG ZT MOT fail rate by age
Each line follows the cars first used in one year across the ages they were tested at from 2022 to 2025, so a line never mixes a 2005 car with a 2015 one. 8k DVSA MOT tests in all (7,721).
At 18 years and typical mileage that is 12% fewer fails than all class 4 vehicles tested at 18 (1,751 MOT tests).
| Age | Raw | Typical mileage | All class 4 |
|---|---|---|---|
| 18 | 38.2% | 38.8% | 44.3% |
| 19* | 37.4% | 38.0% | 43.8% |
| 20* | 36.3% | 36.7% | 43.2% |
| 21* | 37.4% | 37.3% | 42.3% |
* Over 18 years: only survivors are still tested at this age, so these rates describe the cars that are left.
Lower MOT fail rate than average: 38.2% raw · 38.8% at typical mileage, against 44.3% for all class 4 vehicles tested at 18, 1,751 MOT tests. Which years? See the full verdict
What fails on an MG ZT at 18 years
No part fails clearly more or less often than on cars the same age at 3 or more ages up to 18 years, so each is shown as about average.
| Part | Per 100 | All class 4 | Compared | Most common fail |
|---|---|---|---|---|
| Suspension | 16.7 | 17.2 | about average for cars the same age | |
| Brakes | 15.0 | 12.9 | about average for cars the same age | |
| Lights and electrics | 13.5 | 21.4 | about average for cars the same age | |
| Seat belts and airbags | 7.0 | 2.7 | about average for cars the same age | |
| Tyres | 5.6 | 7.0 | about average for cars the same age | |
| Body and structure | 5.4 | 8.7 | about average for cars the same age |
Buying an MG ZT? Check that exact car before the viewing.
Buying Report £14.99 incl. VAT · one car · no subscription · Not a mechanical inspection.
- Model risks for this year and fuel
- What similar cars did at their next MOT
- Repairs ahead
- Viewing checklist
Check one MG ZT, not the average
The figures here describe MG ZT cars as a group. A registration shows one car's own DVSA record: its MOT tests, the mileage at each test and the recall flag.
- Check an MG ZT's MOT history Every MOT test, fail item, advisory and mileage reading DVSA holds for that registration.
- Mileage check on an MG ZT The odometer reading from each MOT, with drops, jumps and long gaps flagged.
- Check an MG ZT for an outstanding recall Whether DVSA's MOT record flags an outstanding safety recall for that registration.
More MG ZT data
Mileage at MOT
At 18 years, 38.2% of MOT tests ended in a fail as tested. Weighted to the mileage mix of all class 4 vehicles that age, the rate is 38.8%, so mileage explains part of the gap.
| Miles | MOT tests | MG ZT | All class 4 |
|---|---|---|---|
| 30-60k | 245 | 27.8% | 32.9% |
| 60-90k | 398 | 36.7% | 41.7% |
| 90-120k | 422 | 38.9% | 46.3% |
| 120-150k | 334 | 41.6% | 47.5% |
| 150k+ | 286 | 49.7% | 46.8% |
MG ZT against similar cars at 18 years
Same class and fuel, all tested at 18 years, at typical mileage.
| Model | Fail rate | 95% range | MOT tests |
|---|---|---|---|
| MG ZT | 38.8% | 36.5% to 41.1% | 1,751 |
| BMW 3 Series MOT fail rate | 31.9% | 31.5% to 32.3% | 70,071 |
| Audi A4 MOT fail rate | 35.1% | 34.6% to 35.6% | 45,814 |
| Mercedes-Benz C-Class MOT fail rate | 40.0% | 39.5% to 40.5% | 43,299 |
| Ford Mondeo MOT fail rate | 43.3% | 42.7% to 43.9% | 29,532 |
| BMW 5 Series MOT fail rate | 29.2% | 28.3% to 30.1% | 23,783 |
| Volkswagen Passat MOT fail rate | 38.4% | 37.5% to 39.4% | 21,985 |
| Mercedes-Benz E-Class MOT fail rate | 29.6% | 28.9% to 30.3% | 19,574 |
| Saab 9-3 MOT fail rate | 38.5% | 37.8% to 39.3% | 19,101 |
Other MG models
More MG ZT data
Years
Running costs
By part
- MG ZT suspension problems
- MG ZT brakes problems
- MG ZT lights and electrics problems
- MG ZT steering problems
- MG ZT body and structure problems
- MG ZT exhaust and emissions problems
- MG ZT seat belts and airbags problems
- MG ZT windscreen and wipers problems
- MG ZT tyres problems
Problems, recalls and costs
Questions people ask
How often does an MG ZT fail its MOT at 18 years?
38.8% of MOT tests at 18 years ended in a fail at typical mileage (38.2% as tested), from 1,751 MOT tests, against 44.3% for all class 4 vehicles the same age; the BMW 3 Series was at 31.9%.
What fails most on an MG ZT at 18 years?
16.7 in 100 MOT tests at 18 years failed on suspension, then brakes (15.0) and lights and electrics (13.5), from 1,751 MOT tests.
How does the MG ZT compare with the BMW 3 Series?
At 18 years the MG ZT failed 38.8% of MOT tests at typical mileage, the BMW 3 Series 31.9% and the Audi A4 35.1%, from 1,751, 70,071 and 45,814 MOT tests.
What mileage does an MG ZT have at 18 years?
A median of 101,658 miles at the MOT test at 18 years, against 105,218 for all class 4 vehicles the same age, from 1,751 MOT tests.
Sources
- Driver and Vehicle Standards Agency, Anonymised MOT tests and results, 2022 to 2025. DVSA MOT data, Open Government Licence v3.0, 7,721 MOT tests. Accessed 7 Oct 2026.
Cars tested at 18 years are compared only with vehicles tested at 18 years in the same year, adjusted to typical mileage. Breakdowns and non-MOT faults are not in this data.