MG GS reliability, MPG and running costs
Figures updated
The MG GS is a car. In 2024 MOT tests it scored 70 for reliability (100 is average), ranking 426 of 442, and 26.5% failed first time against a UK average of 28.5%. Its most common MOT failure is headlamp aim (5.4% of tests).
Ranked 426 of 442 cars in the 2024 MOT Reliability League
In 2024, 2,867 MG GSes aged 3 to 20 had an MOT and 26.5% failed first time (UK average 28.5%). Taking age and mileage into account, the MG GS is 43% more likely to fail than the average car of the same age and mileage.
First-time fail rate
26.5%
UK 28.5%
Fail rate at 3 years
–
UK 12.7%
Average miles a year
7,700
Typical age at test: 6 years
MG GS MOT failure rate by age
Most common MG GS MOT faults
- Headlamp aim: too low5.4% of tests
- Anti-lock braking system: warning lamp indicates an ABS fault3.7% of tests
- Brake pads: less than 1.5 mm thick3.2% of tests
- Tyre pressure monitoring system: malfunctioning or obviously inoperative3.0% of tests
- Electronic stability control: warning lamp indicates a fault2.7% of tests
- Tread depth: tread depth below requirements of 1.6mm2.6% of tests
What the MG GS fails on
| Area | Tests failing | vs similar cars |
|---|---|---|
| Lights and electrics | 10.8% | ▲ 2.3× as often |
| Brakes | 9.0% | ▲ 2.4× as often |
| Tyres | 7.9% | ▲ 1.4× as often |
| Visibility | 2.9% | ▼ 13% less often |
| Exhaust and emissions | 2.6% | ▲ 1.9× as often |
| Seat belts and airbags | 2.2% | ▲ 6.1× as often |
| Body and structure | 1.4% | ▲ 1.4× as often |
| Suspension | 0.9% | ▼ 74% less often |
| Steering | 0.1% | ▼ 85% less often |
| Wheels | 0.0% | ▼ 100% less often |
How much is road tax on a MG GS?
Any MG GS first registered from April 2017 pays the standard rate of £200 a year after its first year (2026/27 rates).
Work out tax for a specific carBuying a used MG GS?
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Frequently asked questions
›Is the MG GS reliable?
Its MOT record is worse than average: the MG GS is 43% more likely to fail than the average car of the same age and mileage, with a reliability score of 70 in our 2024 league (100 is average).
›What are common problems with the MG GS?
The most common MOT fault is “Headlamp aim: too low”, found in 5.4% of tests. It fails on seat belts and airbags and brakes more often than similar cars.
›How much is road tax on a MG GS?
Any MG GS first registered from April 2017 pays the standard rate of £200 a year after its first year (2026/27 rates).
›How many MG GSes fail their MOT?
26.5% of MG GSes aged 3 to 20 failed their MOT first time in 2024.
Sources: DVSA anonymised MOT tests 2024, all versions of the MG GS combined (Open Government Licence v3.0). How we calculate the league.