Hi racer, glad to hear you're giving Sixt another go - hope you get the same good service I normally get.

Can't help you out on the Scirocco but i've rented a lot of Bmw 1 Series from all round Europe and i've mostly had 118d's, 120d's and very occasionally a 118 petrol. I'm a big diesel fan but understand if you want something that revs a bit stronger and is more fun.