Not all upgrades bought. Not all paintjobs unlocked.
All cars bought. All levels unlocked.

File is from local user data, If anybody tries this save file lmk if it works or not.
Couldn't really find any info on save game location so I took my best shot at it.

Put file into Users/"Your user name"/App data/Local/Super toy cars 2/

95% save

FVTurtleFights

Super Toy Cars 2

Muscle Cars Rookie Cup

Open Wheelers Rookie Cup

Motor Mayhem Cup

Whacky Cars Rookie Cup

Gran Turismo Rookie Cup

Supercars Rookie Cup

Everyday Cars International

Muscle VS Gran Turismo

Track Day Cup

Fast and Furious Cup

Street Legal Cars Cup

Speed and Skill Cup

Console

Sub Categories

General Platform

PlayStation 4

Xbox One

Switch

Toy Cars