Electric cars are usually very reliable. They have fewer moving parts than petrol or diesel models, so there's less to go wrong. The Mercedes EQA is a very new model so it's too soon to tell how reliable it'll be in the long-term, but we doubt there'll be any major issues. Mercedes generally performs well in our Satisfaction Index: www.honestjohn.co.uk/honest-john-satisfaction-inde.../

In terms of maintenance, the Mercedes EQA has a servicing interval of one year/15,000 miles. Check with a Mercedes dealer for costs, but it's likely to be less than a petrol or diesel car.