1000 mabrouk,
U have to check for the following:
1- Painting allover the car for any scratches.
2- Operate the engine and notice the rpm of it
3- .Check the A/C and the CD.
4- Check the electric windows and the remote for the center and the trunck.
5- Check for the lights and the tyres.
6- Ask for the Operating manual and the gaurantee book.
7- Ask for the required papers for regestration the car.
Good luck and 10000000 trillion mabrouk...
Cheers