Actually, I disagree with
rob1. In any other country I would be wary about an aftermarket warranty, but in Switzerland the companies really do seem to stand behind their products.
We had Quality1 warranties on both of our cars, and when we had trouble with the cars the claims were approved immediately and paid in full. All the garages we worked with seemed to know the system well, and none ever had problems getting claims approved.
Two words of advice: try to get the dealer to upgrade the cover to 'Five Star' as part of your negotiations, as this gives much better cover than the other versions for not a lot more money, and be aware that while labour costs are always fully recoverable (minus a 'franchise' of CHF100), older cars with higher kilometers will have the payout for parts reduced to reflect wear-and-tear. This reduction is according to a schedule which you can download from the
Quality1 website.