I bought it three days ago and on today it won't start. However, the radio and interior lights come on when I try to start the car.
I tried to have the vehicle jump started and I know it's not the battery. So what
do you think it is?
If you hear it click under the hood and you have tried jumping it, I would think it would be the starter.
You would actually have to qualify where the click is coming from in the engine compartment to determine if it is the starter or (if it is coming from the passenger side - near the battery, then it could be the battery load/no load switch engaging/disengaging. A starter click would sound as if it is coming from under the car (close to where the transmission meets the engine.
Search Mercedes-Benz C-Class Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Mercedes-Benz C-Class Experts