Car Testing - Jeddah

Asalamalykum,
I'm planning to buy  a 2nd Hand Car. I wanted to know the procedure to test the care before buying,

1. Do we have any computer testing centre, which can do a complete test of the car. ? Any idea where it can be done ?

2. is it better to get a Physical checkup also for the car in addition to the Computer test ? Also any idea where it can be done?

any other guidance in this regard will be highly appreciated.

Thanks for your response.
Regards

Take it to the Toyota used car center on madina road, I believe they charge 150 for the service.

Thanks mate.