It’s not the problem of dealers being so far away, its more of the problem as to why brand new cars are breaking down.
Personally I’ve never had any of my 4 Motability cars breakdown but with all the stop, start, stop, start going on in manufacturing at the moment with lack of parts, chips or employee’s and the switch to untried tech in EV’s lets hope this isn’t going to be a thing for the next few years or more.
The other worrying thing is the dealers not having parts to fix your car and waiting months for parts to arrive and hope shoecake your problems are fixed in a quick manner.