Budget crossover with a warranty to match
The MG ZS is a budget-friendly compact crossover SUV that massively undercuts mainstream rivals like the Nissan Juke and Renault Captur on price while offering more space. It is available in both petrol and fully electric (ZS EV) versions, attracting value-focused families and EV newcomers. Backed by MG's seven-year warranty, it has become one of the UK's best-selling cars by offering a lot of metal for the money.
We track 5 known issues across the MG ZS range, including 1 rated as safety-critical. Knowing which variants and configurations to approach with caution can save you from expensive surprises after purchase.
Found a MG ZS? Enter the reg to see which of our 5 known issues apply to that exact car, plus full MOT history and mileage checks.
MK1 (2001–2009) — Petrol options included the 1.6 Petrol, 1.8 Petrol, 2.5 V6, with 2.0 TDI on the diesel side. Our database flags 4 known issues on this generation, 1 of which are rated as safety-critical. The most significant concern is Structural corrosion around suspension mounting points (£1,500–£3,500 to address).
MK2 (2017–2022) — Engine options included the 1.0T Turbo, 1.5 VTi-TECH. We track 2 known issues on this generation, with 2 classified as significant. The most significant concern is Handbrake efficiency failure (£80–£250 to address).
The subframe and structural areas around suspension component mounting points suffer from severe corrosion on first-generation MG ZS models. The steel used in these prescribed areas appears particularly susceptible to salt damage, with corrosion compromising load-bearing capacity much earlier than typical for the vehicle age. MOT data shows this model fails structural integrity tests at over 40 times the national average, with the problem worsening year-on-year. This affects vehicle safety as suspension loads can no longer be adequately transmitted through the structure.
Structural failure around suspension mounting points creates an immediate safety risk. The suspension can detach from the vehicle or lose proper geometry, causing loss of control. MOT failure is certain once corrosion reaches prescribed limits. Professional welding and structural repair costs £2,000-£5,000 depending on extent, often exceeding the vehicle's value.
Inspect the wheel arches, sills, jacking points and door bottoms carefully. Press gently on sills to check for soft spots. Look underneath for corrosion on structural components. Check the MOT history for corrosion-related advisories or failures.
First-generation MG ZS models suffer from widespread body corrosion that significantly reduces structural rigidity. The corrosion extends beyond surface rust to structural elements, compromising the vehicle's overall integrity. This is distinct from but often accompanies the more critical subframe corrosion issues.
Extensive body corrosion reduces crash protection and structural rigidity. MOT failure becomes increasingly likely as the vehicle ages. While not immediately dangerous like subframe corrosion, widespread body rust makes the vehicle uneconomical to repair when combined with other age-related issues. Repair costs vary enormously depending on extent but can easily reach £3,000-£6,000.
Inspect the wheel arches, sills, jacking points and door bottoms carefully. Press gently on sills to check for soft spots. Look underneath for corrosion on structural components. Check the MOT history for corrosion-related advisories or failures.
MG ZS models across both generations suffer from handbrake efficiency problems at over 13 times the national average rate. The handbrake fails to meet minimum legal requirements for holding the vehicle stationary on a gradient. This typically results from cable stretch, adjuster wear, or rear brake shoe/pad deterioration. The issue affects all engine variants and appears consistently across the model's production life.
Insufficient handbrake performance is an immediate MOT failure and safety risk. The vehicle may roll when parked on slopes, potentially causing accidents or damage. Depending on the cause, repair may involve cable adjustment (£50-£100), new cables (£150-£300), or rear brake renewal (£200-£400).
Check brake disc condition for lipping or scoring. Test braking at moderate speed for pulling to one side or vibration through the steering wheel. Review MOT advisories for brake-related items.
The 1.0 litre turbocharged engine in second-generation MG ZS models fails emissions tests at up to 28 times the national average rate. The failures occur across both manufacturer limits and default MOT limits, suggesting fundamental issues with the emissions control system rather than minor deterioration. Problems appear early in the vehicle's life, with failures recorded from very low mileages, and the trend is worsening year-on-year.
Emissions test failure results in immediate MOT failure until repaired. Common causes include catalyst failure, lambda sensor problems, or ECU software issues. Catalyst replacement typically costs £800-£1,500, while sensor replacement is £200-£400. Some issues may be resolved by software updates if available.
Check for any engine warning lights on the dashboard. Ask about the car's MOT emissions history — repeated failures suggest underlying issues. A pre-purchase diagnostic scan is especially worthwhile to check for stored emissions fault codes.
The constant velocity joint protective boots on first-generation MG ZS models deteriorate at over 15 times the national average rate. These rubber boots protect the CV joints from dirt and moisture while containing the lubricating grease. When they split or perish, the joints rapidly wear and eventually fail. The problem affects both 1.8 and 2.5 litre variants and appears to worsen with vehicle age.
Split boots allow water and dirt into the CV joints, causing rapid wear. If left unrepaired, the joints will eventually fail completely, causing loss of drive to one front wheel. Early replacement of boots costs £100-£200 per side. Waiting until joint failure requires complete driveshaft replacement at £300-£500 per side.
Listen for clunking or vibration from underneath when pulling away or changing direction. Check for play in the driveshafts by rocking the car in gear with the handbrake on. Worn CV boots are a telltale sign — look for grease splatter around the inner wheel arch.
For the full breakdown of all 5 tracked issues with repair costs, see the MG ZS common problems page.
Based on 74k real DVSA MOT tests, the MG ZS fails more often than average on several items. The biggest outlier is subframe bushes or mounts worn at 44x the fleet average, followed by abs fault (43x).
When viewing a specific car, check its MOT history for recurring advisories in these categories. See the full MG ZS MOT failure breakdown for data at every mileage point.
Routine servicing (oil and filter change every 10k miles) typically costs £80–£120 at an independent garage.
See the full MG ZS service schedule for every interval and cost breakdown.
The MG ZS has some well-documented weak points, including 1 safety-critical issue that demand careful checking. The right example, properly maintained, can still be a sound purchase — but cutting corners on the pre-purchase inspection is not advisable. The 2021-2022 facelift models are the clear pick — revised interior with better materials, improved infotainment and the larger battery option for EV buyers. For petrol, always choose the manual gearbox. Pre-facelift 2019-2020 models are adequate but noticeably cheaper-feeling inside. The Trophy Connect trim is the best-value specification across the range.
Before committing, check the car's full MOT history, verify the service record is complete, and if possible arrange a specialist inspection. Enter any registration into our free report to see the complete picture.
Get Car Wise maintains a database of known mechanical issues for every popular car on UK roads, tracking the faults that owners, specialists and DVSA data reveal.
When you run a report on a specific MG ZS, we cross-reference the exact variant, engine and age against our database of 5 known issues. Combined with full MOT history analysis, mileage verification and DVLA data, you get a complete picture before viewing.
Enter the registration for MOT history, mileage verification, known faults for that exact variant, and a Get Car Wise Score.
This guide was compiled from independent expert reviews, DVSA MOT data, specialist workshops and our own database of 5 known MG ZS issues. We are not affiliated with any source listed.