The only service i had done by the dealer was my first 15k service, I have taken it to my family mechanic for every other service since, and very glad that i did.
My balancer belt mysteriously shredded itself a few months ago, my mechanic picked it up, investigated the problem, and undertook all the repairs, right before Christmas, and got me back on the road in just over a week. and to top it all off i didn't pay a penny. They couldn't find the exact cause, but because they do the routine servicing, they felt responsible.
I will never get that kind of service from a dealer.
And if that doesn't convince you to use an independent mechanic you trust then listen to my next story.
My brother recently had his engine replaced due to the over heating issue. On inspection by our mechanic, they found that they had re-installed the old alternator belts, and AC belts even though they were damaged, various bolts were either loose or damaged, and they had completely forgot to put the bell housing cover back on, so his starter ring gear, flywheel and clutch were just open to the elements.
I will never get my car serviced by a dealer ever again in my life. i m not saying all dealer mechanics are bad, but it just seems too much of a risk to sort through ll the garbage to find an honest one.
I will stick with my local