Installed an Torklift Ecohitch on my 2017 Model S yesterday (2012-2019 Tesla Model S EcoHitch Stealth). Took me 4 hours, but almost an hour of that was figuring out where all the screws and clips I removed from the under carriage panel went (probably should have taken pictures). Managed to install without lifting the car, just putting the suspension in Very High and I could just fit under the car to remove the panel and replace it. Most daunting part was cutting the panel to allow access for the hitch and installation, but it came out good. Especially like the additional cover when the hitch is not being used (Tesla Undercover 2012-2016 Model S X7223) Overall very happy with the results, but might recommend having professional installation unless you are pretty handy and have tools on hand. Needed to use some tools most people will not have.