The game uses BattlEye. Using a trainer while connected to Ubisoft servers can result in an instant and permanent ban of your Ubisoft account.
Using cheats while connected to "Motornation" servers or participating in Full.Access.The Crew 2 Trainer-FLiNG
For players considering a trainer like Full.Access.The Crew 2 Trainer, pragmatic cautions apply: The game uses BattlEye