Gran Turismo 5/Unused Content

The game files for Gran Turismo 5 include many leftovers from previous releases, including Gran Turismo HD Concept, Gran Turismo 5 Prologue and Gran Turismo PSP, as well as several cars that were cut and/or unfinished during the development cycle.
Unless otherwise noted, all content on this page are derived from this The Cutting Room Floor page. In addition, attempting to access the following content in the game via modifications or cheat devices may cause the game to crash and hard-lock the system.
See also the Unused Event Races and Unused Track Images for other unused contents in this game.
==Unused Cars==
These GT HD, GT5 Prologue and GTPSP cars are completely absent from the game, either due to licensing, being cut during development, or other reasons, and only their entries remain in the database files.
*BMW Concept M5 '04
*Chevrolet Corvette Z06 (C6)/Tuned
*Dodge Viper SRT-10 Coupe/Tuned
*Ferrari 599/Tuned
*FPV F6 Typhoon '04
*FPV GT '04
*Honda INTEGRA TYPE R/Tuned
*Infiniti G35 Coupe/Tuned
*Lotus Elise 111R/Tuned
*Lotus Elise/Tuned
*Mazda Eunos Roadster/Tuned
*Mitsubishi Lancer Evolution IV GSR/Tuned
*Mitsubishi Lancer Evolution IX GSR Tuned Car
*Mitsubishi Lancer Evolution X GSR Tuned Car
*Nissan SKYLINE Coupe Tuned Car
*Nissan SKYLINE GT-R V • spec II /Tuned
*Renault Clio Sport V6/Tuned
*Suzuki Cappuccino (EA21R)/HP Tuned
*Suzuki Swift Sport/Tuned
*Toyota CELICA GT-FOUR Rally Car /Tuned
Additionally, these following contents are new to the game, but were also unused:
*Red Bull X2010 JP Flag Color
*Red Bull X2010 5G (outside of Japan-only Seasonal Events; however, there are also two more unused variants)
*"XXXXXXX" (a duplicate of the Chevrolet Corvette C7 Test Prototype '12)
*Premium version of the Bentley Speed 8 '03 (moved to GT6)
*Premium version of the Nissan R92CP '92 (moved to GT Sport)
*Renault Sport Megane Trophy '09 (its 2011 version would later appear in GT6)
*Lexus IS F '09
*RM versions of the Honda NSX Type R '02, the Lexus LFA '10, the Lotus Evora '09, and the Suzuki SWIFT Sport '07
*MINI COOPER S Tuned Car '06 (based on the MINI COOPER S '05, shown in early pre-release screenshots)
*Aston Martin DB9 Volante '06
*Dodge Challenger R/T Tuned Car
*Honda Civic Type R Tuned Car
*TVR Tuscan Speed 6 Tuned Car
==Removed Tracks==
These tracks are not included in Gran Turismo 5. However, they are hidden within the game's files, and some of them can be loaded on versions prior to Spec II with modifications to game files.
*Apricot Hill Raceway
*Beginner Course
*Cathedral Rocks Trail I
*Cathedral Rocks Trail II
*Cathedral Rocks Trail III
*Chamonix (GT4 layout)
*Circuit de Valencia
*Citta di Aria
*Costa di Amalfi 
*El Capitan
*Fuji Speedway '80s
*Fuji Speedway '90s
*George V Paris
*Grand Canyon
*Grand Canyon Short Track
*Gymkhana
*Hong Kong
*Ice Arena
*Infineon Raceway (Sports Car Course)
*Las Vegas Drag Strip
*Mid-Field Raceway
*Motorland
*New York
*Opera Paris
*Piazza del Campo (was present on early show builds, but later removed)
*Pikes Peak Downhill
*Seattle Circuit
*Seoul Central
*Suzuka Circuit West
*Swiss Alps
*Tahiti Maze
*Test Course
Additionally, the Speed Test Pack also includes portions for a scrapped layout for the Special Stage Route X. There are also PS2 versions that are already playable in the game, such as for Circuit de la Sarthe.
==Unused Parts==
The following tuning parts are not featured in Gran Turismo 5, but they do exist within the game's data:
* Weight Reduction Stage 4 & 5
* NA Tuning Stage 4 & 5
* Intake Throttle Response Improvement
* Catalytic Converter: Racing
* Super High RPM Turbo Kit (equivalent to GT4's Stage 4 Turbo Kit)
* Ultra High RPM Turbo Kit (equivalent to GT4's Original Turbo Kit, except for a low-RPM behavior)
* Clutch: Triple-Plate
* Flywheel: Racing
* Brake upgrades:
** Large Diameter Rotors + 4 Piston Calipers
** Large Diameter Rotors + 6 Piston Calipers
** Large Diameter Rotors + 8 Piston Calipers
** Ceramic Carbon Brakes
* Sports: Super Soft (tires)
* Racing: Super Soft (tires)
* Horizontal grip (C) and vertical grip (V) variants of racing tires:
** Racing: Hard (C)
** Racing: Hard (V)
** Racing: Medium (C)
** Racing: Medium (V)
** Racing: Soft (C)
** Racing: Soft (V)
** Racing: Super Soft (C)
** Racing: Super Soft (V)
* Nitrous (physics behavior exists, but the input is not coded):
** Nitro: 5 Seconds
** Nitro: 10 Seconds
** Nitro: 20 Seconds
** Nitro: 30 Seconds
** Nitro: 60 Seconds
** Nitro: 90 Seconds
** Nitro: 120 Seconds
* Special Gasoline (in 5%, 10%, and 20% power improvement types)
==Unused Tickets==
The following Gift Car Coupons are not used in Gran Turismo 5, but they do exist within the game's data. See also the tickets page for details on them.
* Birthday Gift Car Tickets from year 1997 to 2010 (only tickets up to 1996 were used due to the PSN age requirements)
* Introductory Gift Car Coupon
* JGTC & SUPER GT
* Le Mans 24h
* Rally (likely split into two tickets, Modern Rally Car and Classic Rally Car, as obtained from Gran Turismo Rally)
* Manufacturer-specific tickets:
** Acura
** Alfa Romeo
** Aston Martin
** Audi
** BMW
** Chevrolet
** Chrysler
** Citroën
** Daihatsu
** Dodge
** Ferrari
** Fiat
** Ford
** FPV (will not give anything as there are no cars from this brand)
** Honda
** Hyundai
** Infiniti
** Isuzu
** Jaguar
** Lamborghini
** Lancia
** Lexus
** Lotus
** Mazda
** Mercedes-Benz
** Mini
** Mitsubishi
** Nissan
** Opel
** Pagani
** Peugeot
** Pontiac
** Renault
** Shelby
** Subaru
** Suzuki
** Toyota
** TVR
** Vauxhall
** Volkswagen
** Volvo
Category:Gran Turismo 5
Category:Hidden Contents