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