Purchased all cars and their upgrades
1st place in all races
on the account 1 billion dollars
Unpack the archive:
On Windows Vista / 7/8
C: \ Users \ Name \ AppData \ Local
On Windows XP
C: \ Documents and Settings \ NAME \ Local Settings \ Application Data
DiRT Showdown: Save Game (100% bought and completed) Free Download
Don’t forget to enable hidden folders.
(The trainers didn’t work for me – I used the Cheat Engine program to hack money in the game)