Originally Posted by sticksandstones
my local suby dealer has one crosstrek on their site with a vin listed as JF2GPAGC5D2211724 so I guess the chasis designation is GP which looks to be the same as the Impreza hatchback....unless I am doing this wrong.
I stand corrected, the two-letter chassis designation for the Impreza hatch is in fact GP, according to a post from NASIOC.
And turns out the third digit/letter of a three-letter/digit chassis code indicates chassis and engine combination, didn't know that. So "GPA" may mean "4th gen Impreza hatch chassis, 2.0 liter non-turbo engine", although that conflicts with the information on the thread indicating a "GGA" means "2nd gen Impreza wagon chassis, 2.0 liter turbo engine".
Honestly, only an expert at this thing could really sift through all this, it's a little confusing now with overlapping definitions. :-\
Thread is kinda old, but as you can tell, a small amount of members over there are trying to keep it updated.
And the best Subaru VIN FAQ I could find is actually from cars101.com