La lista de coches que admiten modificaciones de competición en el GT5 es esta:
1. Chevrolet Camaro Z28 '69
2. Chevrolet Camaro SS '10
3. Acura NSX '91
4. Lotus Elise '96
5. Lotus Elise 111R '04
6. Mitsubishi Lancer Evolution IX GSR '05
7. Nissan SILVIA spec-R AERO (S15) '02
8. TVR Tuscan Speed 6 '00
9. Subaru IMPREZA Sedan WRX STI spec C Type RA '05
10. Suzuki Cappuccino (EA21R) '95
11. Volkswagen Golf IV GTI '01
12. Chevrolet Corvette Z06 (C6) '06
13. Chevrolet Corvette ZR1 (C6) '09
14. Dodge Challenger R/T '70
15. Honda CIVIC TYPE R (EK) '97
16. Honda INTEGRA TYPE R (DC5) '04
17. Lexus IS F '07
1. Chevrolet Camaro Z28 '69
2. Chevrolet Camaro SS '10
3. Acura NSX '91
4. Lotus Elise '96
5. Lotus Elise 111R '04
6. Mitsubishi Lancer Evolution IX GSR '05
7. Nissan SILVIA spec-R AERO (S15) '02
8. TVR Tuscan Speed 6 '00
9. Subaru IMPREZA Sedan WRX STI spec C Type RA '05
10. Suzuki Cappuccino (EA21R) '95
11. Volkswagen Golf IV GTI '01
12. Chevrolet Corvette Z06 (C6) '06
13. Chevrolet Corvette ZR1 (C6) '09
14. Dodge Challenger R/T '70
15. Honda CIVIC TYPE R (EK) '97
16. Honda INTEGRA TYPE R (DC5) '04
17. Lexus IS F '07