I have a problem with the ignition coil of a Vauxhall Corsa 1.4? I've heard it is a common problem with Corsas. I have a warranty with Stoneacre. In the warranty book it's does not say if it is covered neither not covered. I called them up they are refusing to tell me. They want to do the diagnostics which would cost me £89 and ten let me know if it is covered. Never less i have paid a lot for a warranty.