Top MG HS fixes every owner should know
Cheap, practical fixes for the MG HS faults you actually meet, with rough costs and what a garage will charge.

TL;DR
The MG HS has several common faults that can be fixed affordably. Knowing these fixes can save you time and money. Common issues include electrical faults and water leaks, with DIY solutions available for many problems. Parts typically range from £20 to £150, while garage labour costs between £50 and £100 per hour.
Electrical Issues
The MG HS often experiences electrical faults, particularly with the battery and wiring. Symptoms include dashboard warning lights or starting problems. A DIY fix involves checking battery connections and replacing fuses, costing around £20 for parts. More complex issues may require garage diagnostics and repairs, costing £50 to £100.
Water Leaks
Water leaks are frequently reported, especially around door seals and the sunroof. A temporary fix can be achieved by applying silicone sealant to affected areas, costing about £10. For a permanent solution, replacing seals may be necessary, costing up to £50 in parts, with garage labour ranging from £50 to £100.
Suspension Noise
Some MG HS models produce noise from the suspension, often due to worn bushings or shock absorbers. Identifying the exact source allows for a DIY replacement of bushings at around £30. However, shock absorber replacement is more complex and may require garage assistance, costing £150 to £300 for parts and labour.
Brake Wear
Brake wear is a common issue, particularly in high-mileage vehicles. Replacing brake pads is a straightforward DIY task, with parts costing between £30 and £80. Garage labour typically costs £50 to £100, making this a relatively affordable repair.
Infotainment Problems
Infotainment system glitches are common in the MG HS. A simple reset can sometimes resolve the issue, making it a DIY-friendly fix. If problems persist, replacing the unit may be necessary, costing around £150 for parts, with installation labour adding another £50 to £100.
MG HS MOT record
From 32,045 recorded MOT tests, 8.5% failed.
| Registered | Tests | Failed | Median mileage |
|---|---|---|---|
| 2024 | 243 | 1.7% | 17,660 mi |
| 2023 | 2,114 | 6.9% | 20,136 mi |
| 2022 | 18,546 | 9.0% | 24,152 mi |
| 2021 | 8,091 | 7.5% | 31,261 mi |
| 2020 | 3,051 | 10.0% | 34,480 mi |
Most common reasons for failure
- Brake disc or drum excessively weakened, insecure or fractured29.0%
- A tyre seriously damaged24.2%
- a brake lining or pad worn below 1.5mm21.4%
- Tyre tread depth not in accordance with the requirements16.8%
- Brake disc or drum significantly and obviously worn8.5%
Figures cover every MG HS tested in the DVSA dataset, not this specific car. Check a registration for the actual history of one vehicle.
Frequently asked questions
What are common faults with the MG HS?
Common faults include electrical issues, water leaks, suspension noise, brake wear, and infotainment problems.
Can I fix MG HS faults myself?
Many issues can be fixed at home with basic tools, but some may require professional help.
How much does it cost to repair an MG HS?
Repair costs vary, but parts can range from £20 to £150, with garage labour costing between £50 and £100 per hour.
Are MG HS repairs expensive?
Repairs are generally affordable compared to other brands, but costs depend on the specific issue.
Got a MG HS reg?
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Sources
- DVSA anonymised MOT tests and results (Open Government Licence v3.0)