That's correct, but it depends upon when you tell them of the fault. If you tell them the fault before the 30 days are up, then the clock stops until the repair is completed. The Which legal team explained that to me over a 1-2-1 call specifically on this issue and also sent me a template letter which also includes the 2008 about misleading/misrepresentation. As a consumer organisation, I have faith in their viewpoint.
My experience with my dealer is very different in that they are communicating with both myself and Skoda UK on a regular basis and have so far promised that they will do what they can to make sure I don't lose out. This includes a complete refund or finding a suitable replacement, which I sadly have to accept will not be as well specced as the SEL FE and all the options that it had included (HUD, Virtual Pedal, Matrix Lights, Travel Assist, Spare Wheel, 18inch Alloys, special paint). I paid just under 20,800 with 3,500 on the clock in Jan, when I try and spec an equivalent vehicle on a car discount website....it's close to 29,000...much more on the Skoda website.
I'm with @OctaviaFirstEdit, reliability is the key thing. In the 850 miles I've done on the hire car, not single problem at all (it's a Ford Kuga 21 plate).
Went to a car supermarket yesterday and sat in lots of different cars - from Kodiaq's to Volvo's and the Octavia is still the best for my needs. So maybe a Mk3.5 is actually the right thing to do....perhaps a Scout!