We're sorry to hear that your daughter has had problems with her Audi Q4 e-tron.

A sudden power loss like this can be a troubling experience and may have caused some loss of confidence in the car. We would suggest returning it to the supplying dealer as soon as possible for a full checkover and diagnostic analysis. If you're not satisfied with the response don't hesitate to escalate the issue with the dealer or Audi UK.

The Q4 e-tron is still a relatively new car and there have been very few reports of problems. If the car restarted later on and operated normally it would suggest this is a software issue rather than hardware, as the latter would have likely disabled the vehicle permanently.