Too Much
 

Is it possible for a car not to run if it has too much oil in it?

Don't know but it will blow smoke like a Peterbuilt!!!!:nono:

No. It will run, but the excess will eventually make its way through the intake system and cause premature carbon buildup on valves and other critical engine components.

the question is kind of vague so i'll just say yes, if the oil is getting into the cylenders and fouling the plugs.

like how much oil is in the car?

ill go with yes, if you flood the crankcase to the extreme (or "X-TREME")

but a little over capacity (3.75 qts), i wouldnt worry about it