Car Mechanic Simulator 2015 PC Cheats:

Access the computer and click on the Bluetooth icon, located near the top right corner. This will make a text box appear. Then you can enter one of the codes indicated below to trigger the corresponding effect.

moneybigtimeplease - Gain $200 

imtoolazytogrindexp - Gain 50 EXP 

flyhigh - Enable Noclip Mode