Colin McRae Rally 04 Cheats...
All car parts
Select 'Secrets' at the option menu and enter FUDWHC as a code.
All other cars (including bonus cars)
Select 'Secrets' at the option menu and enter AIDLAU as a code.
All tests
Select 'Secrets' at the option menu and enter DMLPOD as a code.
All tracks
Select 'Secrets' at the option menu and enter BSDJUC as a code.
All Tracks (Bonus Code 34674)
Enter the following code at the code entry screen: HCHSFD.
All Weather
Select 'Secrets' at the option menu and enter CLRWTR as a code.
Bonus Code 76538 (Group B Mode and Cars)
Use the following code: RTNITJ.
Expert Mode
Select 'Secrets' at the option menu and enter HIQNRM as a code.
Expert Mode (Bonus Code 34674)
Enter the following code at the entry screen: IRZQNT.
Group B mode and Group B cars
Select 'Secrets' at the option menu and enter CFCKGL as a code.
Mirror Tracks
Select 'Secrets' at the option menu and enter EPDZJF as a code.
Mirror Tracks (Bonus Code 34674)
Enter the following code at the code entry screen: FEQRJV.
Various codes for an unknown bonus code
All tracks: BSDJUC
Expert mode: HIQNRM
All parts: FUDWHC
All tests: DMLPOD
Mirror tracks: EPDZJF