I agree, Gt7 needs a much better car list. Hell, I wouldn't mind if PD went the FM5 way, and cut a bunch of cars, but made them really detailed.
If they went that way this is what I would want kept
Abarth 500 '09
Abarth Punto '09
Acura NSX '90
Alfa Guilia GTA '65
Alfa GTV V6 '01
Alfa GT V6 '04
Alfa 8C '08
Alfa TZ3 '11
Alfa TZ2 '63
Audi A3 3.2 '03
Audi TT 3.2 '03
Audi TT S '09
Audi R8 4.2 '07
Audi R8 5.2 '09
Audi R8 '01
Audi R10 '06
Audi R18 '11
Audi Quattro '82
Audi Quattro Rally '83
Audi Quattro PP '84
Audi S4 '03
Audi RS4 '01
Audi RS6 '08
Aston DB9 '06
Aston Vantage '99
Aston Vantage '10
Aston DB7 '00
Aston ONE-77 '11
BMW M3 '04
BMW M3 '07
BMW M4 '14
BMW 135i '07
BMW M5 '08
BMW Z4 '04
BMW Z4 M '08
BMW Z8 '01
BMW 2002 Turbo '74
BMW M3 GTR ALMS '03
BMW M3 GT2 '12
BMW V12 LMR '99
BMW VGT '14
Bugatti Veyron '09
Chevrolet Corvette '14
Chevrolet Corvette ZR1 '09
Chevrolet Corvette Z06 '06
Chevrolet Corvette Z06 '04
Chevrolet Corvette GS '96
Chevrolet Corvette ZR-1 '90
Chevrolet Corvette Stingray '69
Chevrolet Corvette '63
Chevrolet Corvette '54
Chevrolet Camaro Z28 '69
Chevrolet Camaro SS '00
Chevrolet Camaro SS '10
Chevrolet Corvette ZR1 LM '09
Chevrolet Camaro Z28 LM '69
Chevrolet Camaro SS LM '10
Chaparal 2D '67
Chaparal 2J '70
Chaparal 2X '14
Citroen C4 '08
Citroen GT Road '08
Citroen GT Race '08
Dodge Charger '70
Dodge Challenger '70
Ferrari F40 '92
Ferrari F430 '06
Ferrari 430 S '07
Ferrari 458 '09
Ferrari Enzo '02
Ferrari FXX '07
Ferrari 330 P4 '67
Ferrari 512BB '74
Ferrari Daytona '76
Ferrari Dino '72
Ford Mustang '71
Ford Mustang '07
Ford Mustang '13
Ford Mustang Shelby '13
Ford GT '06
Ford MK IV '67
Ford NASCAR '13
Ford Focus ST '06
Ford Focus ST '13
Ford Focus WRC '08
Ford Focus WRC '99
Ford Escort WRC '98
Ford RS200 '85
Ford RS200 Group B '85
Ford F150 Lightning '04
Ford Mustang SVT Cobra '99
Gran Turismo Formula Gran Turismo '04
Gran Turismo Red Bull X2010 S.Vettel '10
Gran Turismo Red Bull X2014 Standard
Gran Turismo Red Bull X2014 Fan Car
Gran Turismo Ford GT LM Race Car Spec II Test Car '06
Honda Civic Type R '97
Honda Civic Type R '04
Honda Civic SIR-II '95
Honda CR-X Del Sol '92
Honda Civic Type R '08
Honda NSX-R '02
Honda S2000 '06
Honda Integra Type R '98
Honda Integra Type R '06
Infiniti G35 Coupe '06
Jaguar XKR R Performance '00
Jaguar XFR '10
Jaguar XKR '07
Jaguar XKR-S '11
Lotus Elise Sport 190 '96
Lotus Elise 111R '04
Lotus Elise Race Car '96
Lotus Elise Race Car '04
Lotus Esprit V8 '02
Lotus Evora '09
Lotus Europa Special '72
Lotus Elan S1 '64
Lamborghini Countach LP400 '74
Lamborghini Muira P400 '67
Lamborghini Gallardo '08
Lamborghini Murcielago '09
Lamborghini Murcielago SV '09
Lamborghini Reventon '10
Lamborghini Aventador '11
Mazda 6 5-Door '04
Mazda 6 '07
Mazda RX-7 '91
Mazda RX-7 '02
Mazda RX-8 '06
Mazda Furai '08
Mazda LM55 VGT '15
Mazda 787B '91
Mercedes SLS AMG '10
Mercedes SLS GT3 '11
Mercedes SLR '06
Mercedes SL55 AMG '02
Mercedes SL600 '98
Mercedes CLK55 AMG '00
Mercedes CL600 '00
Mercedes C63 AMG '08
Mercedes VGT '13
Mercedes VGT Racing '14
Mitsubishi Evo 3 '94
Mitsubishi Evo 6 TME '98
Mitsubishi Evo 9 '05
Mitsubishi Evo X '07
Mitsubsihi Eclipse '06
Nissan Skyline GT-R R32 '94
Nissan Skyline GT-R R33 '97
Nissan Skyline GT-R R34 '02
Nissan 300ZX '98
Nissan 350Z '07
Nissan 370Z '08
Nissan GT-R '12
Nissan GT-R NISMO '13
Nissan Silvia '88
Nissan Silvia '94
Nissan Silvia '02
Pagani Zonda C12 '00
Pagani Zonda C12S 7.3 '02
Pagani Huayra '13
Pagani Zonda R '09
Peugoet 206 S16 '99
Peugoet 106 S16 '99
Peugoet 206 WRC '99
Peuoget 908 HDI '10
Peugoet 905 '92
Peugoet 205 Turbo '85
Peugoet 205 Group B '85
Peugoet 205 Group B Evo '87
RUF RGT '00
RUF CTR2 '96
RUF CTR '86
RUF BTR '87
Renault Clio RS '11
Renault Megane RS '11
Renault Megane Trophy '11
Renault Clio V6 '02
Renault Clio '00
Renault R5 Turbo '85
Renault R5 Group B '85
Subaru Impreza 22B '98
Subaru Impreza STI '04
Subaru Impreza STI Spec C '05
Subaru Impreza WRX '07
Subaru Impreza STI Sedan '10
Subaru Impreza Rally Car '99
Subaru Impreza Rally Car '04
Subaru Impreza WRC '08
Subaru Impreza Rally Car '05
Spyker C8 '03
Shelby Cobra 427 S/C '66
SRT Viper GTS '13
SRT Viper SRT-10 '06
SRT Viper ACR '08
SRT Challenger SRT-8 '08
SRT Charger SRT-8 '12
Toyota MR2 GT-S '97
Toyota MR2 Spyder '02
Toyota Supra '88
Toyota Supra '97
Toyota Supra GT '97
Toyota Celica GT-FOUR '98
Toyota Celica SS-II '00
Toyota GT 86 '12
Car Count: 206 - Will add more when I look at all of GT6's cars