What happens to an electric car battery after more than 600,000 kilometres, a real world example
A seven year old Tesla Model 3 has covered 610,000 kilometres on its original battery pack. The battery still works, but usable capacity and driving range have both fallen by roughly a third.
The battery survived, but lost a third of its capacity
A Tesla Model 3 owned by the YouTube channel Drive Protected reached 610,000 kilometres without a battery replacement. When new, the car could cover as much as 386 kilometres on a full charge in ideal conditions. That figure has now dropped to 254 kilometres.
A motorway test produced a more realistic result. At a steady 109 km/h, the car managed 222 kilometres before coming to a complete stop, using 32.4 kWh according to the onboard computer. When new, the same battery offered a maximum of 49 kWh of usable energy.
The result sits right on the edge of Tesla’s warranty logic
Tesla typically gives the Model 3 battery and drivetrain an eight year warranty, with the battery expected to retain at least 70 per cent of its capacity during that period. Depending on the version, the mileage limit is either 100,000 or 120,000 miles.
In this case, the battery degradation ends up in roughly the same territory. Around two thirds of the original usable capacity remains. The important difference is mileage. At 610,000 kilometres, this car sits several times beyond Tesla’s usual warranty threshold.
What does this tell an electric car buyer?
This example does not prove that every Tesla Model 3 battery will last as long. What it does show is that high mileage does not automatically mean the battery is finished. Even after losing around a third of its usable capacity, the car remains usable, though longer trips clearly demand more planning and a smarter charging routine.
The lesson is fairly straightforward. When buying a used electric car, mileage alone tells only part of the story. What really matters is the battery’s actual capacity, its charging history and the range it can still deliver in everyday use. After hundreds of thousands of kilometres, those are the figures that decide whether the car still makes sense, or merely still moves.
