I had the new model Sharan (61 plate) after 2 Galaxys (07 & 09) , it was by far the worst vehicle i have ever had !
I spent more time in hire cars than in the Sharan over the 2 years., 25 visits to the main dealer and they could never find the fault.
It would randomly die whilst you were driving, you could have been doing 5mph or 70 mph, with no warning the thing would stop and die with no power, no electrics, light or anything.
You would lose power steering, servo brakes and everything else.
The last straw was pushing it out of lane 2 of the unlit M1 at 5am asd it died when overtaking trucks !
The dealer could never get to what was causing it as nothing was ever logged in diagnostics.
So IMHO i would stay well away from the VW (Seat is the same car) and go for the Fords, both mine were faultless clocking up 138k and 126k in 2 years respectively.