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