BatteryHigh
State of health variation on rapid charged cars
HV battery module work£1,200–£8,000
Inspect · Get a battery health readout before purchase
2022–2025 MG MG4 · common fault repair costs
What the known faults on this MG MG4 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
- £1,520
- Worst case, everything
- £10,450
The single priciest documented job on the 2022–2025 MG MG4 is hv battery module work at £1,200–£8,000. Few cars need every repair listed here · treat £1,610–£10,450 as the full exposure if one arrived with all of them.
Cost per fault
SoftwareMedium
Infotainment and driver assist software faults
Infotainment repair or software fix£120–£1,200
Inspect · Confirm software updates have been applied
BrakesMedium
Disc corrosion from regen braking
Brakes (discs, pads, caliper)£200–£800
Inspect · Inspect disc faces for pitting
InteriorLow
Trim rattles and seat wear
Interior trim repair£90–£450
Inspect · Drive a rough road and inspect the seats
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 MG4 this week?
Build a tickable checklist for the exact car in front of you, record faults with photos, and hand the buyer a report.