>Why would their "new model targeted at the middle class" be cheaper to fix? Tesla/Elon has shown that they'll make good on vehicle upgrades/substandard parts if needed (battery shield and debris bar upgrades at no charge).
Generally speaking, how much a car costs to fix correlates with what the car costs new. Part of this is parts cost; I mean, if you compare a 3-5 year old bmw 3 series to a new honda civic, you are getting a car of about the same size for about the same price... but the BMW rotors, for instance, are beefier to begin with, and they wear faster - even if you are just paying for the metal, you are paying more for bmw rotors. (with brakes and tires, there is usually a trade-off between performance and longevity, to some extent. Softer tires/softer rotors do the job better, but don't last as long.)
On an electric car, I would expect this to be dominated by the cost of battery replacement, which I would assume would dominate the cost of electric car maintenance. A smaller electric car is going to have a smaller (in both size and power) battery pack, and a smaller battery pack is going to cost you less to replace when it wears out.
The other part of it is price discrimination. Service and parts for the bmw are priced, you know, for people that can afford a bmw. If you have a bmw, the mechanic is going to charge you the "premium service" because it's a good indicator that you are willing to spend more on a car than the person that drives a civic.
