Once the battery in an EV fails, it costs too much to bother replacing it - what's your opinion?

It seems that an electric vehicle is only worth as much as its battery and, once the battery is "spent" it's not worth the cost of replacing. Is this true?

Asked on 13 September 2018 by Rosco White

Answered by Andrew Brady
With fewer mechanical parts than a petrol or diesel vehicle, electric cars tend to be more reliable and need less maintenance, meaning you'll save money here as well as on fuel. This might mean a battery replacement when required is easier to stomach - and it's worth bearing in mind that batteries rarely fail, they just degrade over time. We've heard of Nissan Leaf with hundreds of thousands of miles on the clock showing little sign of requiring new batteries. Some manufacturers (e.g. Renault) will lease you the battery with the car, which means they'll stump up the replacement costs if the battery's performance drops below 75 per cent of its original capacity.
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