Used MG4 2022-present reliability review
The MG4 is a good car and very reasonably priced used. Reliability is a real issue, though.
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What's the used MG MG4 like?
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Mark Pearson
Updated: 29 April 2026
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What should I look for in a used MG MG4?
When viewing a used car, always follow our used car buying checklist.
There isn't anything specific to the MG4 to look out for yet. It's worth noting that you'll need to go for Trophy trim or the XPower to maximise safety kit. These versions add blind-spot monitoring, rear cross-traffic alert and lane-change assistance. You get automatic emergency braking (AEB) and lane-keeping assistance on all models, though.
The MG4 scored the full five stars for safety when it was tested by Euro NCAP, although it's worth noting that adult occupant crash protection was found to be significantly better in the Born. The newer Leapmotor B05 also achieved a full five-star Euro NCAP safety rating, equipped with 21 standard Advanced Driver Assistance Systems (ADAS) and seven airbags.
What are the most common problems with a used MG MG4?
As of writing, the MG4 has just one recall to its name and it describes an issue with the locks. Number of affected vehicles: 1960. Year applicable: 2022.
Click here for more information. Contact your local MG dealer if you believe your vehicle is involved in a recall.
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Is a used MG MG4 reliable?
Our data suggests the MG4 is an unreliable car.
It performed poorly in the 2023 What Car? Reliability Survey, ranking 18th out of 20 cars in the electric car class, and its reliability score was 76.1%. Bodywork and non-motor electrical issues were the main complaints from the 37.5% of MG4 owners who told us that their car had gone wrong. Although 80% of the afflicted cars were fixed for free, 20% of owners faced bills of £1000 to £1500, and 70% were laid up for more than a week.
In our 2024 survey, the MG4 performed even more poorly, receiving a reliability score of just 63.8%. It finished last out of 18 cars in the electric car class.
MG as a brand performed atrociously in the 2025 What Car? Reliability Survey, finishing bottom of the 30 brands listed.
And the MG4 ranked a poor 12th out of 19 electric cars in the 2025 survey.
Reliability rating 63.8%
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- Most common faults: Non-motor electrics 15%, interior trim 9%, bodywork 7%, motor 7%, sat-nav/ infotainment 7%, battery/charging system 4%, gearbox/clutch 4%, motor electrics 4%, air-con 2%, brakes 2%, steering 2%, suspension 2%
- Average repair cost: 55% £0, 39% £1000-more than £1500
- Typical time off road: 16% one day to a week, 68% more than a week
The MG4 is a great value proposition for a pure electric model. because it's actually cheaper than many petrol or hybrid equivalents. It also offers a competitive range, decent charging speed, spacious rear seats and generous standard equipment.
However, it performed poorly in our latest reliability survey, coming bottom of its class. With issues in almost all of our fault categories, 30% of the cars reported on went wrong. MG only paid for repairs in 55% of cases, leaving 39% of faults costing £1000 or more to put right, according to owners. Repairs weren’t always swift, either; 68% of affected cars took more than a week to fix.
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Owner's view: "The charging socket on my brand new MG 4 broke after just 10 weeks of ownership."
Used MG4: owners' reliability data
As part of our Reliability Survey, What Car? readers said the MG4 demonstrates poor reliability.
Several owners reported issues with electrical faults, such as software glitches and warning lights appearing on the dashboard. A few mentioned that these problems were intermittent, leading to frustration.
Feedback on dealership service was mixed. While some praised their local MG dealerships for being helpful and resolving issues promptly, others expressed dissatisfaction. Delays in repairs and parts availability were common complaints, with some owners mentioning that faults took longer than expected to fix. A handful of customers noted that despite their vehicles being relatively new, they experienced recurring problems that required multiple trips to the dealer.
Be a part of our next What Car? reliability survey. Complete the form now.
https://survey.alchemer.eu/s3/90474827/f91eea077088&rdt=13
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Tips & Advice
Don’t miss a recall
If your car is to be recalled, you should arrange the work to be carried out quickly. Sign up to our recall alerts to ensure you’ll not miss a thing
Check for outstanding recalls
Many cars are recalled so that faults can be put right. Recall work shouldn’t cost you a penny, and they’ll make your car safer or more mechanically robust. Checking if your car has been recalled is easy
Choose the right breakdown cover
You may already have a breakdown policy through your home insurance or new-car warranty so check to avoid paying twice
Ensure you have breakdown cover
Thousands of What Car? readers deliver their verdict on the best breakdown companies helping you to choose the best cover
Make sure you have warranty cover
New cars usually have warranties that last between three and seven years that can help cover the cost of mechanical faults. But this protection can last longer with an extended warranty
About the writer
Name: Mark Pearson
Title: Used cars editor
Follow Mark Pearson on
Mark Pearson has been a motoring journalist for more than 15 years and is currently the used cars editor for What Car?.
Mark spent his formative years at the BBC, where, at various times, he scheduled, broadcast and archived television and radio programmes and researched, wrote and produced promotional material.
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