Having worked at a car dealership- don't work at one of those, at the very least. Like many established industries, being a car mechanic doesn't have too many ways up from there- you can get all the certs you want, but you'll never be management- and compensation increases are based more on tenure than anything else. If you can teach yourself and then get into a performance garage or something like that, go for it! You'll likely wind up better off buying a project car to learn on or going to a technical school in off time than going full-tilt into mechanicary- and you'll have a chance to see if it's right for you before you switch. Also, if you like that stuff, and want to create things, consider mechanical engineering of some flavor.

I had a 25-30 year old Caprice and then tracked a new Camaro. I have a bit of mechanical experience with all the work that comes with those. Of course electric vehicles will be the next big thing.

I definitely would not work at a dealer or chain. Being part of a small company or your own would be great. Not moving up wouldn't be a big deal in that kind of role.

On a side note, I'm confused why everyone is obsessed with moving up. Can't people just be happy where they are? I really don't see much difference in my company between the various levels, nor is it a very big promotion at 7%.