2.2 or 2.5 liter manual transmission?

Impreza 2.2l L models:

Automatic transmission gear ratios:
1st - 2.785
2nd - 1.545
3rd - 1.000
4th - 0.694
reverse - 2.272
final drive ratio - 4.11

Manual transmission gear ratios:
1st - 3.545
2nd - 1.947
3rd - 1.366
4th - 0.972
5th - 0.780
reverse - 3.333
final drive ratio - 3.90


Impreza 2.5RS models:

Automatic transmission gear ratios:
1st - 3.027
2nd - 1.619
3rd - 1.000
4th - 0.694
reverse - 2.272
final drive ratio - 4.44

Manual transmission gear ratios:
1st - 3.545
2nd - 2.111
3rd - 1.448
4th - 1.088
5th - 0.780
reverse - 3.333
final drive ratio - 4.11

The 2002 2.5RS (new body) 5MT uses slightly different gear ratios:

1st - 3.45
2nd - 2.06
3rd - 1.45
4th - 1.09
5th - 0.78
axle ratio (final drive) - 4.11


WRX 2.0l models:

Automatic transmission gear ratios:
1st - 2.785
2nd - 1.545
3rd - 1.000
4th - 0.694
reverse - 2.272
final drive ratio - 4.11

Manual transmission gear ratios:
1st - 3.454
2nd - 1.947
3rd - 1.366
4th - 0.972
5th - 0.738
reverse - 3.333
final drive ratio - 3.90

Note that the WRX uses a 1.1:1 stepdown ratio in the center diff, so the front axle ratio is 3.90 and the rear differential uses a 3.545 (just like the SVX). 3.545x1.1=3.90. The 3.545 ratio is actually an infinite 3.54545454545...etc.


Here's a spec sheet on the Impreza transmissions:






So, to summarize, yes I was wrong on the RS final drive ratios. I was confusing the RS PhaseII EJ25 SOHC final ratios with the Legacy GT PhaseII EJ25 SOHC final ratios. I am known for occasional idiotic lapses in memory.

The 2.5L Legacy GT had a 3.90 final drive on the 5MT and a 4.11 final on the 4EAT.