Ensure you set the purchase price to $0 to avoid "Negative Cash" bugs. 2. The "Extra Options" Mod
For a more permanent fix, many players install the script. This mod unlocks all hidden cars in the dealership. Enable the "Unlock All Cars" toggle in the .ini file. The M3 GTR will appear in the car lot for $0. nfs carbon bmw m3 gtr in career save game
You can buy multiple copies and customize them (though the GTR has limited visual parts). 3. Hex Editing (Advanced) Ensure you set the purchase price to $0
I can provide the specific or mod links to get you on the road. nfs carbon bmw m3 gtr in career save game