I bought a 12 mth warranty for over £2k from Audi 11 months ago.
It was an expensive warranty but it had no excess and covered everything except service items such as tyres and brake pads etc..
I should say that I have had good experience with this same warranty product in the past; with a prior car purchase.
The price also reflected the age and mileage of my vehicle.
They quote newer, low mileage cars more cheaply than older, higher mileage cars...
now 11 months down the line (I have met all the conditions of the policy on my side)
I make a claim for a leaking rock