How to Upgrade Test Drive Unlimited

1. Purchase a vehicle capable of being tuned.
2. Take your vehicle to the tuning shop capable of upgrading it. All tuning shops are located in the southeast corner of Oahu. If your vehicle is an AC, Ascari, Caterham, Farboud, Noble, Triumph or TVR, take it to British Parts. If your vehicle is an Aston Martin, Jaguar, Lotus or McLaren, take it to British Specialist. If your vehicle is an Audi, Koenigsegg, Mercedes-Benz, Spyker, Volkswagen or Wiesmann, take it to European Specialist. If your vehicle is an Alfa Romeo, Ducati, Ferrari, Lamborghini, Maserati, MV, Agusta or Pagani, take it to Forza Tuner. If your vehicle is a Kawasaki or Nissan take it to Japan Auto Parts. If your vehicle is a Cadillac, Chrysler or Saturn, take it to Today's American parts. If your vehicle is a Chevy, Dodge, Ford, Pontiac, Saleen or Shelby, take it to US Muscle Tuner.
3. Purchase the best available upgrade package for your vehicle.