Yup. Cars don't have carburators anymore (fuel injection ftw), but if you can work on your lawnmower's carburetor, you can fix most things on a car. All you need are:

• OBD2 scanner - crappy ones can be had for $20, but so yourself a favor and get a good one (so you don't burn out your car's computer)
• basic tools - wrenches and screwdrivers - usually only need one or two sizes, not a full set
• YouTube
• patience

If you have those, you can do most ICE and EV maintenance. Parts and documentation are generally available.

EVs are a different beast. If you're doing anything beyond the very basics (e.g. tires, headlights, etc), you'll have no documentation and may void your warranty.