I suggest you check these 2 places.
1. Skrut - Rm80, better than the price you have to pay for getting a bad second hand car.
2. Check with service centre for last service record.
The rest minor minor thing you may or may not able to find out, just get a good mechanic to help. At least you can know if the car has gone through any major claims.

Yes, but for major accident owner most likely gonna claim insurance for repair. There may be cases they repair out of pocket though.