We’ve been looking at one for some time. In fact, we were ready to sign for a new one yesterday, but the maths didn’t work out. We’ll reattack next year.
As above; they are smaller than you think inside, especially the boot which has been raised to accommodate the rear diff / drive shafts. That said, the space is very square, which makes it more usable than some. They’re perfectly pleasant to drive, with all the creature comforts you’d expect from a VAG product.
The Wife is really keen on the Yeti while i’m pretty indifferent, and i’m more than happy to keep our Octavia vRS. Yetis are more expensive than the equivalent Octavia, not quite as good on fuel / tax (although it’s marginal) and quite a bit smaller on the inside. I can get 2 x 29ers in the back of the Octavia without having to take the wheels off.
I’d seriously recommend looking at the Octivia, if you’re in the market.