Should I continue to have my Mercedes-Benz C180 serviced at the main dealer or go independent?

I have now nearly reached the three-year point on a Mercedes-Benz C180 that I bought from a main dealer at six months old with a three-year warranty and two free services. These have now been had and I am told the next service will be the big one at £600 or more. Would I retain a better resale value at this point by continuing with the main dealer servicing, when there are many professionals who do not charge main dealer rates but are just as efficient? There generally seems to be some reason found that vehicles are found to be less valuable than thought. Your advice would be appreciated.
The car has already lost most of its value, so the effect of independent servicing from now, on the residual value, is less marked. Obviously it's better to use an independent MB specialist than a general garage or a big ‘all makes and models’ autocentre.
Answered by Honest John on

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