Externaly, is there any, other than the wheels?
Ross M 1.6 Astra ... R.I.P. 182 Nov 26, 2006 #2 the 182 has a twin rear exhaust which shows, the 172 exhaust is hidden.
T Turkish Nov 26, 2006 #3 exhaust, headlamp colour, wheels, spoiler(if cup'd), splitter(if cup'd) and paint colours
G Gary-Lew Cupra 300 ST 4drive Nov 26, 2006 #4 headlamp inners (xenon) are grey on the 182 black on the 172,oops got in late ^^
R Revels Nov 26, 2006 #5 Seats and seatbelts are different. I know he said outside, but you can see those from the outside.
fUbAr Nov 26, 2006 #6 registration plates are newer. The car's are generally moving slower. Paint colour is a big clue.