BatteryHigh
PHEV battery health and charging faults
HV battery module work£1,200–£8,000
Inspect · Charge the car fully and confirm the electric range achieved
2019–2025 MG HS · common fault repair costs
What the known faults on this MG HS typically cost to put right at a UK independent garage · use the figures to price risk before you bid, and to justify a reduction when something shows up on inspection.
Cost at a glance
- Most expensive fault
- £1,200–£8,000
- Top three risks, from
- £3,000
- Worst case, everything
- £19,500
The single priciest documented job on the 2019–2025 MG HS is hv battery module work at £1,200–£8,000. Few cars need every repair listed here · treat £3,970–£19,500 as the full exposure if one arrived with all of them.
Cost per fault
TransmissionHigh
Dual-clutch hesitation and jerky low-speed shifts
DCT clutch pack / mechatronic work£900–£3,200
Inspect · Drive in traffic from cold
Engine CoolingHigh
Coolant loss and sweet smell under the bonnet due to thermostat housing or water pump leaks on the 1.5 T-GDI.
Head gasket / cooling system repair£900–£2,600
Inspect · Check the coolant expansion tank level. Shine a torch down the left side of the engine block to look for pink crusting around the thermostat housing.
Bodywork and InteriorLow
Rattles and creaks from the panoramic sunroof assembly, alongside sticking or grinding roof blinds.
Body & corrosion repair£250–£1,800
Inspect · Open and close the sunroof blind fully, listening for grinding. Push up gently on the sunroof glass from inside to check for excessive play or creaking.
ElectricalMedium
Infotainment lag, freezing and camera faults
Infotainment repair or software fix£120–£1,200
Inspect · Test every screen function twice
SuspensionMedium
Ride harshness and early bush wear
Suspension refresh (per axle)£250–£1,100
Inspect · Listen for knocks over speed bumps
Electrical BodyMedium
Keyless entry failure on the exterior door handles caused by water ingress damaging the microswitch.
Water-ingress trace & seal£150–£800
Inspect · With the smart key in your pocket, press the rubber button on both the driver and passenger exterior door handles to ensure the central locking engages and disengages.
BrakesMedium
Premature rear brake disc and pad wear caused by the electronic parking brake (EPB) dragging or auto-hold calibration issues.
Brakes (discs, pads, caliper)£200–£800
Inspect · Run a finger over the cold rear brake discs to feel for deep scoring or a pronounced outer lip. Compare the rear alloy wheels to the front for excessive brake dust.
Ranges are indicative parts-and-labour costs at a UK independent garage, inclusive of VAT. Franchised dealers typically sit 40–80% higher, and prestige or electrified variants sit at the top of each band. Always get a written quote before committing.
Inspecting a MG HS this week?
Build a tickable checklist for the exact car in front of you, record faults with photos, and hand the buyer a report.