A couple questions:
Do you like the Tesla better than the Mercedes?
Do you know whether repairs centers in your area are presently overloaded?
Thanks!
At $120,500, my P90D Model S was equivalent in price to a new large S class Mercedes. A new AWD S class with the twin turbo V8 engine starts around $105k. Other than the difference in drive train (i.e. I like electric better), there is no comparison as the Mercedes is head and shoulders better than the Tesla. The interior is elegant versus spartan. The seats are noticeable more comfortable than the upgraded ones I opted for in my Tesla, and there's more rear leg room. The ride quality is better than that on my Tesla. I replaced it with a 2014 E550 Mercedes with the V8 twin turbo engine, purchased from a MB dealership. It has driver assistance which is equivalent to Tesla's Autopilot. Despite my car being 1 year older than the 2015 Tesla, the lane assist is much better/reliable and the smart cruise control is identical in operation to the Tesla. The automatic HVAC is actually automatic versus me having to adjust it manually. Oh, and when you buy an S class it comes with a center console versus me having to go to their web site, buy it separately for $600, have it shipped to the SC and installed.
The reliability is incredibly better, parts are immediately available, as are loaner cars. I've now driven my CPO Mercedes (4 year, unlimited mileage factory warranty) for 30,000 miles and other than service every 10,000 miles the car has required nothing, with total mileage now at 80,000. In the first 30,000 of owning the Tesla, my car had so many trips for repairs to the SC that I knew everyone on a first name basis. My main battery failed twice, drivers door handle failed, air bag wiring harness failed, sensors kept falling out of the rear bumper cover, radio came on erratically if I opened a door, on & on. They were really nice people at the SC BTW, acting as my advocates due to all the problems.
You really can't compare the two brands if you put aside the religious jealousness of many people who are hard core Tesla devotees. And, please don't say that the Tesla is superior unless you've owned a brand new S class Mercedes and driven it for at least 3 to 4 months as your daily driver, as you don't have the basis for a rational comparison. The ownership experience is just as completely different as is a ICE v. EV powertrain.
As to your second question, the SC that I used is about 20 minutes from my home and I go past it regularly. It used to be a very large Toyota dealership. I haven't been inside there in 18 months since turning in my Tesla, so I haven't spoken with the people about how busy they are with repairs, so I can't help you with that. I will tell you that without a doubt, you'd be hard pressed to add another car to their parking lot despite it being very large, as they have cars parked almost on top of each other, and it's always the same. From the constantly crowded condition, I suspect it's unsold inventory.
Final note. The 2014 E550 that I bought has every factory option available that year with a sticker price of $75k. It's the best Mercedes I've ever owned -- better than a string of S class Benzes -- as it does everything so well. I bought it when 5 years old, 50,000 miles with the 4 year unlimited mileage factory warranty for $35k, the same price as a base line Model 3.
Hope this helps,
pdq