Earn an International A License, then enter the GT League and win all four cups, including the GT
World Cup. Now you will get an extra menu in Special Events called GT Hi-Fi. This mode gives you
better sound effects, boasts higher resolution, and smoother frame rate by reducing background
details. You will also be the only one on the circuit (time trial), and you can view your replay in this
mode.

  Bonus cars, tracks, and more

Beat all track with each type of car (A, B, and C) on all three modes of difficulty (easy, normal,
difficult). Then, this will enable all bonus items in arcade mode, which include four other tracks
(Autumn Ring, Deep Forest, SSR5, and Grand Valley Speedway), all cars (Toyota, Subaru, Dodge,
and TVR), a bonus ending FMV sequence, and high resolution mode.

  Chrysler Copperhead concept car

Get all gold medals in the B Class license test. Alternatively, finish in first in the UK vs. US
championship.

  Toyota TRD3000GT

Get all gold medals in the A Class license test.

  Nissan Nismo 400[R]

Get all gold medals in the International A license test.

  Hidden FMV sequence

Select arcade mode, obtain all bonus tracks, then finish in first place on all tracks with any car. This
must be done in A, B, and C class mode on the normal or higher difficulty setting. Then, a "Staff
Video" option will appear under "Bonus Items".

  Conserve memory card slots

Play the game in arcade mode, exit, then enter simulation mode and save the game. Now the arcade
and simulation mode information will be saved together, cutting the amount of memory card slots
used by half.

  Memory card battle with one card

Enter memory card battle mode. Then, a message will appear stating that player one is loading and
that no memory card was found for player two. Wait until the information has loaded for player one,
then remove the memory card and insert it into the second memory card slot. Now the game will
load data from that location and allow both players to participate in the memory card battle.

  Duplicate parts

Buy two identical cars. They may be given different color schemes if desired. Then, buy as many
parts as desired for the first car. Now view the list of fitted parts of the first car from the garage.
Switch to the second car, get inside, and view its fitted parts list, which should be empty. While
remaining in the second car, enter a spot race. At the qualify options, select "Machine Setting", then
"Change Parts". All the parts from the first car should be available. Exit the race and return to the
garage. Then, view the list of fitted parts for both cars, which all desired parts so now be duplicated.
Note: Only items available on the "Change Parts" menu may be duplicated. This trick will not work
on cars that have been awarded.

To get a GTO double twin turbo.To get this  car you must beat the 60 laps race.Then exit the race.After you exit the race you go beat another time.after that chack your garage.This is the
best car in granturismo.