Here is a guide on how to do all the cars in game.
-Foam up car
-Clean car
-Wipe car body
Clean the car
-Foam up car
-Clean car
-Wipe car body
Polish the bodywork
You don’t really need the flashlight, you can just drag the Orbital Polisher over everything since it’s faster.
Wash the wheels
-Clean the inside of wheel rims
-Clean fender
-Wash wheel
Wash the windows
Clean the car
-Foam up car
-Clean car
-Wipe car body
Repair seats
Just remove the stains, lol
To clean side mirrors, just use the cloth in the Window cleaning kit
To paint a car, go to Store, then click on Services, then go to Varnish. Make sure you paint it the correct color as what the job needs!