Here is the full list of all 63 Car Detailing Simulator achievements.
Sell lower price
Buy shed car
Repair garage
Buy garage
Car 1 minute
Stairs ride
Get 10 rep
Buy all upgrades
Use sponge
Fix trash
Use trash can
Use small brush
Wash 10 cars
Use sand paper
Find unique
Use automatic polisher
Use paint meter
Get 5 rep
Buy all toolkits
Long session
Buy seat toolkit
Water computer
Return dirty
Use soft brush
Use wide brush
Buy interior toolkit
Buy window toolkit
Buy garage upgrade
Buy wheel toolkit
Get 2 rep
Fix scratches
Use hand polisher
Use flashlight
Buy finish toolkit
Open memory
Wash 1 car
Buy body toolkit
Take photo
Buy one toolkit
Finish tutorial
Use vacuum
Use seat spray
Use window spray
Use rag
Use pressure washer
Buy lights toolkit
Fix body
Fix windows
Fix wheels
Fix seat
Finish game
Wash 50 cars
Wash 100 cars
Wash 500 cars
Get 15 rep
Make money
Overtime
See credits
Buy auto salon
Fix ufo
Pressure washer time
Find turtle