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