If the game crashes after editing, your "Checksum" might be off. Most modern editors fix the checksum automatically, but if yours doesn't, try the NFS Save Editor by Arushan which includes a checksum fixer.
Most standard save editors focus on currency and stats, but some specific tools or methods are required to fully unlock the car lot: nfs most wanted save editor unlock all cars
All vehicles—including the BMW M3 GTR, police cruisers, and transport trucks—should now be available for purchase and customization. Unlocking Bonus and Hidden Vehicles If the game crashes after editing, your "Checksum"
Click or Apply Changes before closing the tool. Step 4: Verify in Game Launch Need for Speed: Most Wanted. Load your modified profile. Head to the Car Lot or your Safehouse Garage . If the game crashes after editing