would the vanos be covered on an aftermarket warranty?
why did it fail, if they say its worn out then nothing is covered for wear and tear etc
i've had to deal with loads of warranty companies thru work
and fro the garage point of view they are simply not worth the bother
they make you jump thry hoops to get approval, then the try to get out of paying
then they make you wait to get it inspected(to try to put you off and get sick of waiting)
then after 3 months and 100 phone calls chasing payment you might finaly get paid
i would personaly NEVER advise anybody to take on an aftermarket warranty
and as said already theres usualy a claim limit of around £1000-1500 for big jobs too