In the Teslas, there are dramatically fewer moving parts and consumables.
No rings to dry rot / wear out, spark plugs, fan belts, oil filters, pistons, fuel pumps, etc, etc. I was actually referring to the Teslas. I do however, think the X was too much too quickly. It is a mess from an engineering standpoint. That being said, the drive train will last much longer than a similar ICE. I suspect in the long run, with battery wear, it will be a bit more than a wash.
Disclaimer: I'm long on TSLA and Solarcity Solar Bonds.
Even then it's only at ~45k and runs about $700.
Overall running costs for EVs are incredibly low. At 48k miles right now and my cost in tires($1k @ 30k mi) is actually my highest per-mile cost, even above electricity.
From what I've heard there's some people out there with ~150k and still on the original brake pads(!).
Other than normal wear and tear, there should be massively less maintenance required for electric vehicles.