Car statistics by year
2004 MG ZT
MG ZT cars first registered in 2004: 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 2004, so like is set against like.
- MOT first-time pass rate, 2025 66.6% All 2004 cars 57.9%
- Typical mileage at the MOT 102,300 miles; all 2004 cars 101,100
- Left at the end of 2025 1,428 36.1% of the 3,961 at the end of 2014
- Tests finding a dangerous defect 7.9% All 2004 cars 9.6%
- Tests with an advisory 56.5% All 2004 cars 70.0%
- MOT tests in 2025 695 normal tests in Great Britain
How do 2004 MG ZTs do at their MOT?
In 2025, at about 21 years old, 66.6% of 2004 MG ZT MOT tests were passed first time, against 57.9% for all cars first registered in 2004. 2004 MG ZTs did better than average for their age, by 8.7 points. A year earlier the same cars passed 67.4% of the time (all 2004 cars 56.5%).
Most common MOT failures on the 2004 MG ZT
SRS malfunction indicator lamp: warning lamp indicates a fault was the most common single reason a 2004 MG ZT failed, on 15.1% of about 200 failed tests. By area of the car, suspension failed most often (41.8% of failed tests; all 2004 cars 38.7%). 7.9% of tests found at least one dangerous defect, against 9.6% for all cars first registered in 2004. 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 |
|---|---|
| SRS malfunction indicator lamp: warning lamp indicates a fault Seat belts and supplementary restraint systems | 15.1% |
| Parking brake efficiency below requirements Brakes | 13.8% |
| Component mounting prescribed area excessively corroded significantly reducing structural strength Suspension | 11.6% |
| Rigid brake pipes: excessively corroded Brakes | 9.1% |
| Position lamp: not working Lamps, reflectors and electrical equipment | 6.5% |
| Track rod end: ball joint has excessive play Steering | 6.0% |
| Linkage ball joint dust cover no longer prevents the ingress of dirt Suspension | 5.6% |
| Shock absorbers: serious fluid leak Suspension | 5.2% |
| Suspension arms: ball joint excessively worn Suspension | 5.2% |
| Coil spring: fractured or broken Suspension | 4.7% |
Source:DVSA,UK Motoring analysis 2025 Updated
Failure categories: MG ZT vs all 2004 cars
The marker shows the share for all cars first registered the same year.
| Category | Share of failed tests |
|---|---|
| Suspension | 41.8% |
| Brakes | 37.9% |
| Lamps, reflectors and electrical equipment | 36.2% |
| Seat belts and supplementary restraint systems | 17.2% |
| Noise, emissions and leaks | 16.8% |
| Body, chassis, structure | 15.5% |
| Tyres | 13.8% |
| Visibility | 13.4% |
Source:DVSA,UK Motoring analysis 2025 Updated
Most common MOT advisories on the 2004 MG ZT
An advisory is something the tester noticed that did not fail the test but may need work soon. 56.5% of 2004 MG ZT tests had at least one (all 2004 cars 70.0%). These are the things to check on one you are thinking of buying.
Most common advisories
| Advisory | Share of tests |
|---|---|
| Rigid brake pipes: corroded, covered in grease or other material Brakes | 17.4% |
| Brake discs: worn, pitted or scored, but not seriously weakened Brakes | 13.7% |
| Tread depth: worn close to legal limit or worn on edge Tyres | 13.4% |
| Suspension arm: corroded but not seriously weakened Suspension | 9.2% |
| Sub-frame: corroded but not seriously weakened Suspension | 7.3% |
| Tyres: slightly damaged or cracking or perishing Tyres | 7.2% |
| Coil spring: corroded Suspension | 6.6% |
| Engine oil leak, but not excessive Noise, emissions and leaks | 5.6% |
| Component mounting prescribed area is corroded but not considered excessive Suspension | 4.2% |
| Track rod end: ball joint has slight play Steering | 3.9% |
Source:DVSA,UK Motoring analysis 2025 Updated
What mileage is normal for a 2004 MG ZT?
Half of the 2004 MG ZTs tested in 2025 had covered fewer than 102,300 miles. A quarter had covered fewer than 70,400 and a quarter more than 135,700. For all cars first registered in 2004, the middle figure was 101,100 miles, so 2004 MG ZTs have been driven about as far as 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 | |
|---|---|---|---|---|---|---|
| 2004 MG ZT | 48,300 | 70,400 | 102,300 | 135,700 | 172,000 | 656 |
| All 2004 cars | 51,600 | 73,300 | 101,100 | 133,200 | 166,100 | 309,169 |
Source:DVSA,UK Motoring analysis 2025 Updated
How many 2004 MG ZTs are left?
At the end of 2014, 3,961 2004 MG ZTs were on the DVLA record in the United Kingdom (these counts start in 2014). By the end of 2025, 1,428 were: 550 licensed and 878 declared off the road (SORN). That is 36.1% still on the record, against 25.3% for all cars first registered in 2004.
Share still on the record since 2014
Cars licensed or SORN at each year end, as a share of the number at the end of 2014. Cars scrapped or exported leave the record. Late registrations and imports can push the share above 100%.
| Year end | 2004 MG ZT | All 2004 cars |
|---|---|---|
| 2014 | 100.0% | 100.0% |
| 2015 | 91.4% | 94.1% |
| 2016 | 83.6% | 87.1% |
| 2017 | 73.0% | 77.1% |
| 2018 | 63.8% | 66.7% |
| 2019 | 56.9% | 57.2% |
| 2020 | 52.7% | 49.7% |
| 2021 | 47.6% | 42.3% |
| 2022 | 44.1% | 37.0% |
| 2023 | 41.0% | 32.8% |
| 2024 | 37.8% | 28.5% |
| 2025 | 36.1% | 25.3% |
Source:DfT / DVLA End of 2025 Updated
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 | 695 MOT tests of 2004 MG ZT cars | 15 September 2026 |
| Cars on the record | Vehicle licensing statistics Department for Transport | End of 2025 | 1,428 cars still on the record (licensed or SORN) | 15 September 2026 |
- MOT figures cover normal tests in Great Britain in 2025 of MG ZT cars first registered in 2004; retests are excluded. “All cars” means every car we match to a model, first registered in 2004.
- 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.