Getting my car serviced at the Ford dealers is twice as expensive as at my local garage. Will it affect the value of my car when I part ex it if I use the local garage? I change my car every 3 years.
It WON'T affect the warranty as long as it is serviced according to the manufacturer's specification and using geniuine ford parts.
It may have a negligable effect on the value i.e. if I was looking for a ford I'd pay a bit more for one with full dealer history over one that had 3rd party servicing; but not a lot more as long as it's still been serviced properly.