I've had a 'new shape' 2006 Octavia VRS from new. Great car, 200BHP 6 speed & no problems. Done over 100,000 miles in it.
The majority of parts or common in various Audi & VW models, even the Skoda engine cover has a little Audi badge on the side of it!
Got a 2005 Octavia. Good reliable cars, as witnessed by their use as taxis everywhere.
The dealers seem to be even more devious than most main dealers, looking for any opportunity to slide in a few extras. No Haynes manuals available, servicing generally needs an electronic gizmo to interrogate the electronics.
I had a VRS for work for about 8 weeks, what a laugh. Great fun to drive pretty quick but not mental and more than a match for more expensive cars with similar performance.
I cannot really give any practical data as the company paid for the petrol, oil and servicing, it was ragged in the time I used it though and never broke.
I have a 59 plate Octavia 4x4 1.9tdi. It achieves between 45mpg, and 57mpg, depending on where I am working. It's a good sized car, and is comfortable to drive. When it gets replaced, it's likely to be by another 4x4, or possibly the Scout.