Remember that all items in your storage locker are accessible while fixing cars, but you need items in your personal inventory for negotiations (like candy or cigarettes).
If a zip file or installation is completely broken, a clean reinstall is often the most reliable "final solution". Gameplay Success Strategies Fails: Car.Dealership.Simulator.zip ...
Watch these tutorials to resolve technical issues and learn professional dealership management: How To Fix Car Dealer Simulator Crashing On Steam YouTube · Moe Gaming Remember that all items in your storage locker