-nebojsa-

Good evening. Roof rails for SW/Combi can be retrofitted. You need 4 metal supports for rails (5E9817905, 5E9817906, 5E9817421, 5E9817422) and a way to bond them to roof side support, since they are spot welded to roof strengthening profile from the factory. Also of course you need roof rails, and a lot of interior bits dismantling ... I've done it, but i used metal bonding glue and sealant for supports. The tricky part is drilling through the roof of the car; at least the first hole. I've done it by myself, and don't know of any other attempt personally, i've found a few topics on drive2.com with other one or two examples of retrofit. But it can be done.

@IonC Hello, I was randomly browsing briskoda, and have seen this topic. I may help you, I had a similar issue, juddering/misfire at heavy acceleration and on higher rpms. Also fuel consumption increased. DTC popped up on VCDS, but none on the dash. All of them were misfire related, BUT seems to be caused by 2nd exhaust sensor (commonly referred as lambda probe). After exhaust sensor replacement problem went away, consumption went down-normalized. Used BOSCH 0 258 030 221 (my Octavia is 1,2 tsi CJZA), but check if it fits your 1,4 TSI as I don't know which code is used in Australia. Worth mentioning that i've changed the spark plugs at the same time as a precaution since the car was obviously running rich due to faulty sensor.