Well I got a 6ft 8" tall IKEA bookcase in mine in the week, with no worries. Front seat reclined, both rear seat folded down and tailgate shut. If that helps.
 
i've had a sailing boat mast in mine... about 20ft long! boot didn't quite shut tho, nor the passenger window :lol:
 
went to my mates farm the other day, picked up 3 sheep and a cow thought to myself they will go in!