As of March 2012 there had been 1,476 different cars in GT games. That list includes regional name variations (MX-5/Miata/Eunos Roadster) as the same car - with 970 such cars in GT5.
I'll let you do the math on how many are, therefore, NOT in GT5 and just how big your list is going to be. I'll also let you in on the fact that the majority of the missing cars are in fact just versions of the MX-5/RX-7/Skyline/S2000/NSX/GTO.
TRD 2000GT/3000 GT Tom's Supra Toms T020..Venturi,Vector BMW 8 Series,a whole bunch of Mugen tuned cars Integra/Beat/Prelude Type S,regular Accord Type-R '99 I will do more research later.
Mines R32.5,R33 and Evo V
Toms Altezza 280T,T111
Plymouth Phaeton,PT Spyder
Nissan Skyline Silhouette Formula (R30)
Chevrolet Camaro Z28 30th Anniversary ’96
Mitsubishi 3000GT LM Edition
TVR Cerbera LM Edition
Honda Del Sol LM Edition
Toyota Celica Rally Car '99
Look at the GT2 list,got most of mine from there.👍 Mini Rally car aswell,Evo V rally car '98. First gen RX-7,FC3S Convertible,MR2 2nd gen Convertible 328 Coupe,CLK (non amg version).