I did measure this prior to ordering as it happens to be a fairly important for me also. There are two issues, firstly, I have only recently ordered my car so cannot measure it directly and secondly, I cannot find where I noted it down! What I do remember is that the floor length is a good 40cm longer than my 147 and measuring that gives me a roughly calculated 175cm (about 5'8") in the Stelvio, which from memory rings a bell although this was only a quick, rough measurement leaving a little space either end. Obviously this can be confirmed by others here and also the shorter length at the roof-line.
We will see how my memory serves me! (Probably not very well!)
For what it's worth, I frequently carry a single bicycle in the back of my 147 with just the front wheel removed.
Last edited by OltreSP; 08-27-2019 at 07:11 AM.
Reason: Measurement conversion