Use the search function and you'd find an exact list detailing what you want.
However, I disagreed with it on a couple of cars, here is my version
EDIT, Updated, hopefully fully correct
* = fantasy
** = M3 in GT5 is the GT2 version, but there was a Nring 24h version on the same chassis if I remember right.
*** = Zonda in game is fantasy, but real versions exist.
Touring Cars
S BMW 320i Touring Car ‘03
S Honda INTEGRA TYPE R Touring Car
S Lexus IS 200 GT-1 Race Car ‘04
S Mazda Atenza Touring Car
S Mazda Mazda6 Touring Car
S Mitsubishi FTO Super Touring Car
S Subaru IMPREZA Super Touring Car
S Toyota ALTEZZA Touring Car
DTM Touring Cars
S Alfa Romeo 155 2.5 V6 TI Touring Car '93
S Audi A4 Touring Car '04
S Audi Abt Audi TT-R Touring Car ‘02
P Lexus IS F Racing Concept ‘08
S Mercedes-Benz 190 E 2.5 – 16 Evolution II Touring Car ‘92
S Mercedes-Benz CLK Touring Car ‘00
S Opel Astra Touring Car (Opel Team Phoenix) ‘00
S Opel Calibra Touring Car ‘94
S Vauxhall Astra Super Touring Car ‘00
S Vauxhall Calibra Super Touring Car ‘94
Touring cars <200bhp
S Honda Gathers Drider CIVIC Race Car ‘98
S Honda MUGEN MOTUL CIVIC Si Race Car ‘87
S Spoon FIT Race Car ‘03
Historic Touring cars <200bhp
S Honda S800 RSC Race Car ‘68
JGTC 90's
S Nissan CALSONIC SKYLINE GT-R Race Car ‘93
JGTC GT500
S Honda ARTA NSX (JGTC) ‘00
S Honda Castrol MUGEN NSX (JGTC) ‘00
S Honda LOCTITE MUGEN NSX (JGTC) ‘01
S Honda Mobil 1 NSX (JGTC) ‘01
S Honda RAYBRIG NSX (JGTC) ‘00
S Honda TAKATA DOME NSX (JGTC) ‘03
S Lamborghini NOMAD Diablo GT-1 (JGTC) ‘00
S Nissan CALSONIC SKYLINE (JGTC) ‘00
S Nissan LOCTITE ZEXEL GT-R (JGTC) ‘00
S Nissan MOTUL PITWORK Z (JGTC) ‘04
S Nissan PENNZOIL Nismo GT-R (JGTC) ‘99
S Nissan PENNZOIL ZEXEL GT-R (JGTC) ‘01
S Nissan XANAVI HIROTO GT-R (JGTC) ‘01
S Nissan XANAVI NISMO GT-R (JGTC) ‘03
S Toyota au CERUMO Supra (JGTC) ‘01
P Toyota Castrol TOM’S SUPRA (JGTC) ‘97
S Toyota Castrol TOM’S SUPRA (JGTC) ‘00
S Toyota Castrol TOM’S SUPRA (JGTC) ‘01
S Toyota DENSO SARD SUPRA GT (JGTC) ‘00
S Toyota WOODONE TOM’S SUPRA (JGTC) ‘03
JGTC GT300
S Autobacs ARTA Garaiya (JGTC) ‘03
S Nissan C-WEST RAZO SILVIA (JGTC) ‘01
S RE Amemiya AMEMIYA ASPARADRINK RX7 (JGTC) ‘04
S Subaru CUSCO SUBARU ADVAN IMPREZA (JGTC) ‘03
S Toyota SUPERAUTOBACS APEX MR-S (JGTC) ‘00
S Toyota WEDSSPORT CELICA (JGTC) ‘03
Super GT GT500
P Honda ARTA NSX (SUPER GT) ‘06
P Honda EPSON NSX (SUPER GT) ‘08
P Honda RAYBRIG NSX (SUPER GT) ‘06
P Honda TAKATA DOME NSX (SUPER GT) ‘06
P Lexus BANDAI DIREZZA SC430 (SUPER GT) ‘06
P Lexus DENSO DUNLOP SARD SC430 (SUPER GT) ‘08
P Lexus ENEOS SC430 (SUPER GT) ‘08
P Lexus PETRONAS TOM’S SC430 (SUPER GT) ‘08
P Nissan Calsonic IMPUL GT-R (SUPER GT) ‘08
P Nissan MOTUL AUTECH GT-R (SUPER GT) ‘08
P Nissan WOODONE ADVAN Clarion GT-R (SUPER GT) ‘08
P Nissan XANAVI NISMO GT-R (SUPER GT) ‘08
P Nissan XANAVI NISMO Z (SUPER GT) ‘06
P Nissan YellowHat YMS TOMICA GT-R (SUPER GT) ‘08
P Toyota YellowHat YMS Supra (SUPER GT) ‘05
Super GT GT300
P Autobacs ARTA Garaiya (SUPER GT) ‘08
P Lexus Weds Sport IS350 (SUPER GT) ‘08
P RE Amemiya Amemiya AsparaDrink RX7 (SUPER GT) ‘06
P Subaru CUSCO DUNLOP SUBARU IMPREZA (SUPER GT) ‘08
24 Hour of Nurburgring
S BMW M3 GTR Race Car ‘01**
S Nissan FALKEN☆GT-R Race Car ‘04
Group C Race Cars
S Jaguar XJR-9 LM Race Car ‘88
P/S Mazda 787B Race Car ‘91
S Mercedes-Benz Sauber Mercedes C9 Race Car ‘89
S Nissan R89C Race Car ‘89
S Nissan R92CP Race Car ‘92
S Peugeot 905 Race Car ‘92
S Toyota MINOLTA Toyota 88C-V Race Car ‘89
GT2
S BMW M3 GTR Race Car ‘01
S Gillet Vertigo Race Car ‘04 (This was a FIA GT3 class car but this one is super charged)
GT1 90’s
S McLaren F1 GTR
S Mercedes-Benz CLK-GTR Race Car ‘98
S Nissan R390 GT1 Race Car ‘98
S Panoz Esperante GTR-1 Race Car ‘98
S Toyota GT-One (TS020)
GT1 2000’s
S Chevrolet Camaro LM Race Car*
S Chevrolet Corvette C5-R (C5) ‘00
P Citroën GT by Citroën Race Car*
S Dodge Viper GTS-R Team Oreca Race Car ‘00
S Dodge Viper GTS-R Team Oreca Race Car ‘00
S Ford Ford GT LM Race Car*
S Ford Ford GT LM Race Car Spec II*
P Ford Ford GT LM Spec II Test Car*
S Honda NSX-R Prototype LM Race Car*
S Jaguar XJ200 LM Race Car*
S Lister Storm V12 Race Car ‘99
S Mazda RX-7 LM Race Car*
S Mazda RX-8 Concept LM Race Car*
S Nissan 350Z Concept LM Race Car*
S Nissan Fairlady Z Concept LM Race Car*
S Nissan GT-R Concept LM Race Car*
S Pagani Zonda LM Race Car***
LMP
S Audi R8 '01
S Audi R8 (Audi Playstation Team Oreca) '05
P Audi R10 TDI '06
S Bently Speed 8 '03
S Pescarolo Courage C60 - Peugeot Race Car '03
S Pescarolo C60 Hybride - Judd Race Car '05
S Pescarolo - Courage - Judd GV5 Race Car '04
P Peugeot 908 HDi FAP - Team Oreca Matmut '10
P Peugeot 908 HDi FAP - Team Peugeot Total '10
Historic lemans from '60 to '79
P Ferrari 330 P4 Race Car ‘67
S Ford GT40 Race Car ‘69
S Chaparral 2D Race Car ‘67
S Chevrolet Corvette Z06 (C2) Race Car ‘63
P Ford Mark IV Race Car ‘67
P Jaguar XJ13 Race Car ‘66
Can-am
S Chaparral 2J Race Car ‘70
S Toyota Toyota 7 Race Car ‘70
Renault Sport Trophy
S Renault Sport Clio Renault Sport Trophy V6 24V Race Car ‘00
S Renault Sport Lutecia Renault Sport Trophy V6 24V Race Car ‘00
S2000
S Spoon S2000 Race Car ‘00
LM Fantasy Race Cars
S Chevrolet Camaro LM Race Car
S Ford Ford GT LM Race Car
S Ford Ford GT LM Race Car Spec II
P Ford Ford GT LM Spec II Test Car
S Honda NSX-R Prototype LM Race Car
S Honda S2000 LM Race Car
S Jaguar XJ220 LM Race Car
S Mazda RX-7 LM Race Car
S Mazda RX-8 Concept LM Race Car
S Nissan 350Z Concept LM Race Car
S Nissan Fairlady Z Concept LM Race Car
S Nissan GT-R Concept LM Race Car
S Pagani Zonda LM Race Car
LMS Race Cars
S Audi R8 LMS Race Car ‘09
S Audi R8 LMS Race Car (Team PlayStation) ‘09
Australian V8 Super Cars
S Ford AU 2000 Ford Falcon XR8 ‘00
Race modifable cars
P Acura NSX RM ‘91
P Chevrolet Camaro SS RM ‘10
P Chevrolet Camaro Z28 RM ‘69
P Chevrolet Corvette Z06 (C6) RM ‘06
P Chevrolet Corvette ZR1 (C6) RM ‘09
P Dodge Challenger R/T RM ‘70
P Honda CIVIC TYPE R (EK) RM ‘97
P Honda INTEGRA TYPE R (DC5) RM ‘04
P Lexus IS F RM ‘07
P Lotus Elise RM ‘96
P Lotus Elise 111R RM ‘04
P Mitsubishi Lancer Evolution IX GSR RM ‘05
P Nissan SILVIA spec-R AERO (S15) RM ‘02
P Subaru IMPREZA Sedan WRX STI spec C Type RA RM ‘05
P Suzuki Cappuccino (EA21R) RM ‘95
P TVR Tuscan Speed 6 RM ‘00
P Volkswagen Golf IV GTI RM ‘01
Drift Machines
P AEM S2000 (SEMA Gran Turismo Awards 2005)
P Amemiya FD3S RX-7
P BLITZ DUNLOP ER34 SKYLINE (D1GP) ‘07
S BLITZ ER34 D1 SPEC (D1GP) ‘04
S HKS GENKI HYPER SILVIA RS2 (D1GP) ‘04
S Mazda BP FALKEN RX-7 (D1GP) ‘03
S Toyota SPRINTER TRUENO GT-APEX (AE86 Shuichi Shigeno Version) ‘00
CUP Cars
S Nissan mm-R Cup Car ‘01
S Volkswagen Lupo Cup Car ‘00
S Volkswagen Lupo GTI Cup Car (J) ‘03
S Volkswagen New Beetle Cup Car ‘00
Nascar
P Impala SS (#14 Tony Stewart NASCAR, '09)
P Impala SS (#24 Jeff Gordon NASCAR, '10)
P Impala SS (#42 Juan Pablo Montoya NASCAR, '10)
P Impala SS (#48 Jimmie Johnson NASCAR, '09)
P Impala SS (#88 Dale Earnhardt, Jr. NASCAR, '10)
P Fusion (#99 Carl Edwards NASCAR, '10)
P Fusion (#43 AJ Allmendinger NASCAR '10)
P Camry (#11 Denny Hamlin NASCAR, '09)
P Camry (#18 Kyle Busch NASCAR, '10)
P Camry (#20 Joey Lagano Home Depot NASCAR, '10)
P Camry (#20 Joey Lagano GameStop NASCAR, '10)
P Camry (#55 Michael Waltrip NASCAR, '09)
P Camry (#83 Brian Vickers NASCAR, '10)
