QuestionCan I hook up a trailer hitch on my subaru impreze 2dr? year 1999
AnswerThank you for your question, Haakon.
I've researched the specifications for your vehicle and find no mention of towing options for your car.
Although it is an all wheel drive vehicle it was not made to tow much weight. The maximum you'll probably be able to tow would be 2000 lbs., using a Class A trailer hitch. I have included a link to read about trailer hitch classifications.
http://www.iboats.com/sites/trailerboats/site_page_1925/
images/tow503.pdf
Hopefully this will assist you,
Vern