Even normal maintenance of the EV is very expensive. It all has to be done in specially equipped shops (essentially, EVERYTHING is a dealer repair or maintenance).
Their tires are a lot more expensive (because they have to carry the increased weight yet stay small), and the brakes wear out faster (because of stopping all that extra weight). Dynamic braking doesn't help it much.
Then, of course, of something goes wrong with the motor, it's a BITCH to fix. The entire drive assembly has to be removed using specially equipped hoists and jacks (it comes out from under the car!), and it weighs about the same as a Ford F-150 V8 engine. The assembly includes the motors, transmission, and rear axle linkage. Once it's out, you can THEN remove the defective motor and replace it (they are not repairable). Only a Tesla shop has the facilities to work on them.
Gasoline cars are easy to maintain or fix using fairly common tools, right in your own garage or yard. If you want to hire it done, most any shop can accommodate you. No special equipment necessary. The engines on modern gasoline cars are self adjusting and everything. No points to replace or adjust. Spark plugs last for years.