Estimated realistic range of the MG4 SE over ten years at typical UK mileage, against the usual 70% capacity warranty floor.
What degradation looks like on a MG4 SE
From a realistic 185 miles when new, a typical MG4 SE still manages about 167 miles at 5 years (90% health), 157 miles at 8 years (85%) and 150 miles at 10 years (81%).
The first year usually shows the biggest single drop as the pack settles, after which the fade slows to a crawl. Batteries almost never fail outright; they just gradually carry a little less.
Most manufacturers warrant the battery for 8 years or 100,000 miles against falling below about 70% capacity. On this car, 70% health still means around 130 miles of realistic range.
Habits that keep the battery healthy
- Charge to 80% for daily use and save 100% for long trips
- Avoid leaving the car parked for weeks at 100% or near empty
- Use AC charging for routine and rapid charging for journeys
- Do not fear normal use: the management system protects the pack far better than folklore suggests
If you are looking at a used MG4 SE, an EV specialist can read the exact state of health from the battery management system. It is the single most valuable check on a used electric car, and it turns this page's estimate into a measured fact.
Related on The EV Pros
MG4 SE servicing near you
Every business on The EV Pros is checked for EV competence, so your MG is worked on by people trained for high voltage systems.