Is it a 10% saving?
My thoughts on this is so....
When looking around, for example currently been looking at W166 MLs, I am finding 2012/13 cars from Mercedes at the £29-39k price point, however, there have then been 2102 cars at indy garages for £24k and even got close to pulling the trigger on a 2014 ML at £29500 with an indy dealer.
There is more like a 20-30% premium at Mercedes dealers.
Is this worth it?
No.
Why?
The tier 1 approved used car warranty is crap, and when we are talking about 2 year old cars it still has a years warranty anyway.
I would rather by a 2 year old car privately than buy a 3-4 year old one from Mercedes with their crap warranty.
Also, the 30 day exchange is rubbish imho, I tried to use it with me E350, all they would offer was other cars in the group stock, and this time with no discount, so although I got £4k off my original purchase I would have had to put £4k into something as good or more if I wanted something else.
Private sellers? Most are asking more than indy dealers as far as I can see.
7 day insurance? Oooh, look I saved £15!!
Buy the newest, best specced and lowest mileage, nicest condition car you can find in your budget I say.
Also, I know if I have had a dog of a car, I would never sell it privately, I would always trade it to get shot of it, which to me makes buying from a private seller a big plus for me, just a shame most are asking top dollar.