BatteryHigh
EV battery health and charge-rate variation
- Typically appears
- Any
- What to inspect
- Run a state-of-health check and test a rapid charge
- Typical repair
- HV battery module work · £1,200–£8,000
Is the 2017–2025 MG ZS reliable?
Scored from 8 documented faults · reviewed by the VehicleFaults Research Team
Quick answer
5.7/ 10
MixedOn our documented-fault scoring the MG ZS rates 5.7 out of 10 · mixed. We hold 8 known faults for it and 1 are rated high severity, so the risk is real but contained. The weak points cluster around battery, electrical and suspension. A well-serviced example with evidence for the big-ticket items is usually a safe buy; the score describes the model, not the specific car in front of you.
Verdict · Negotiate · budget for the known faults
What the score is built from
- Critical
- 0
- High
- 1
- Medium
- 5
- Low
- 2
Weak points cluster around battery, electrical, suspension, body.
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Build the inspection planThe faults that decide it
ElectricalMedium
Infotainment freezing and software glitches
- Typically appears
- Any
- What to inspect
- Cycle every function and confirm software updates are applied
- Typical repair
- Infotainment repair or software fix · £120–£1,200
SuspensionMedium
Bush and damper wear on poor road surfaces
- Typically appears
- 60,000+ miles
- What to inspect
- Listen over broken tarmac
- Typical repair
- Suspension refresh (per axle) · £250–£1,100
TransmissionMedium
Jerky gear shifts and low-speed hesitation on 1.0T automatic models
- Typically appears
- 30,000-50,000 miles
- What to inspect
- Select Drive and Reverse repeatedly on a flat surface to feel for excessive engagement delay, then perform a slow-speed crawl test to check for clutch judder.
- Typical repair
- Clutch & dual-mass flywheel · £700–£1,600
BrakesMedium
Severe pitting and corrosion on rear brake discs on EV models
- Typically appears
- 3-4 years or 20,000-40,000 miles
- What to inspect
- Visually inspect the rear brake discs through the alloy wheel spokes. Look for heavy rust scoring or a pronounced lip caused by underuse due to regenerative braking.
- Typical repair
- Brakes (discs, pads, caliper) · £200–£800
Costs are indicative UK independent-garage bands for budgeting and negotiation · never a quote.
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