I Had a 182, best place for all the info is cliosport.net, head over there, BUY a member ship and do a lot of reading before you buy one
You can get 2 bikes in with wheels off, 1 in with front off.
Down side to a 182 (over a 172) is the exhause goes where the spare wheel would be (meaning there isnt one) and you cant fit a tow bar, if you intended on getting a bike rack for a towbar.
My brother in law is selling his 05 plate Blue 182, 24K, Immaculate Cond, £7000, going to put it on the forum 2moz hopefully.