MG 4 Trophy MOT failures and reliability

The MG 4 Trophy is one of the stronger cars at the MOT: 89% of its 2,136 tests in 2025 were passed first time, 17 points better than the 72% for all cars. Half the MG 4 Trophy cars tested were registered in 2022 or later, and younger cars pass more often. That ranks it 2nd of the 14 MG models we cover. Every figure here comes from the DVSA's record of each MG 4 Trophy MOT, so it shows what testers found rather than what owners report.

MOT tests in 2025

2,136

First-time pass rate

89%

All cars

72%

MG 4 Trophy MOT strengths and weak spots

The MG 4 Trophy fails less often than the average car in every area of the test we measure.

It does best on suspension, where 0.8% of MG 4 Trophy tests failed against 9.1% for all cars.

MG 4 Trophy cars first registered in 2023 passed 93% first time; those from 2022 passed 88%.

At 3 years old the average MG 4 Trophy had covered 29,859 miles, about 10,000 a year.

The single most common failure on the MG 4 Trophy was headlamp aim: too low, on 2.1% of tests.

What the MG 4 Trophy fails on

Share of MG 4 Trophy tests with at least one failure in each area, beside the figure for all cars.

• Tyres4.9% (all cars 6.3%)
• Lights and electrics3.3% (all cars 10.7%)
• Visibility2.1% (all cars 4.4%)
• Suspension0.8% (all cars 9.1%)
• Seat belts and airbags0.2% (all cars 0.9%)
• Brakes0.1% (all cars 6.3%)
• Body and structure0.1% (all cars 3.3%)
• Steering0.1% (all cars 2.0%)

Most common failure items

Share of tests on which each item was recorded.

1. Headlamp aim: too low 2.1%
2. Tyres, condition: has a cut in excess of the requirements deep enough to reach the ply or cords 2.1%
3. Tread depth: tread depth below requirements of 1.6mm 2.0%
4. Wipers: does not clear the windscreen effectively 1.2%
5. Tyres, condition: has ply or cords exposed 1.0%
6. Headlamp aim: too high 0.8%
7. Washers: provides insufficient washer liquid 0.5%
8. Suspension arms, pins and bushes: pin or bush excessively worn 0.4%

Most common advisories

1. Tread depth: worn close to legal limit/worn on edge 16.7%
2. Brake discs: worn, pitted or scored, but not seriously weakened 7.3%
3. Suspension arms, pins and bushes: pin or bush worn but not resulting in excessive movement 4.3%
4. Tyres, condition: has a cut but not deep enough to reach the ply or cords 4.0%
5. Non-component advisories: Child Seat fitted not allowing full inspection of adult belt 2.3%
6. Non-component advisories: Nail in tyre 1.5%
7. Tyres, condition: slightly damaged/cracking or perishing 1.4%
8. Tyres, condition: slightly damaged 0.9%

Pass rate by year of registration

First-time pass rate of the MG 4 Trophy by the year it was first registered.

Check a particular MG 4 Trophy

The figures above tell you what to look out for on any MG 4 Trophy. For one MG 4 Trophy's own MOT history, mileage and tax, enter its registration for a free MOT check.

Other MG models

• MG ZS
• MG 3
• MG HS
• MG HS Excite
• MG TF
• MG MGF
• MG B
• MG 5 Excite
• MG GS
• MG ZT
• MG ZR
• MG 6
• MG 5 Trophy

Source: Department for Transport, Anonymised MOT tests and results, 2025, cars and light vans, normal tests only. Pass rates are first-time passes; a pass after repair at the test station counts as a fail. Contains public sector information licensed under the Open Government Licence v3.0.