Hmm, yeah I see your frustrations
Here is my solution to the basic car kit place file. I made it into a local script (to avoid server lag and see if it would still work) and tweaked the torque and speed a bit. Plus there are other chassis on the dev forum like this other constraint chassis so maybe check it out.
CarKit (1).rbxl (57.5 KB)
If it’s any consolation cars are actually pretty tough to script there are way too many ways to do it with many pros and cons for each. People spend months figuring out and tweaking a car to make it realistic, enjoyable, and especially work with the physics system which Roblox arguable does not do a good job teaching what the forces represent like gravity.
Here is my research on the subject matter, maybe it’ll help.