So went to Lookers VW at middlesbrough today to try and do a deal on a new Golf R, wanted to trade in my 59 plate GTI (12,000 miles, absolutely mint etc) and got offered £15K
Oh he also said he'd knock a grand off the RRP on the Golf R.
So they offered you £16k against the full price of an R then?
To be fair, they could buy "your" car in the trade for less than £16k, but as it stands, they're not discounting the new car at all. You need to work out how much you are prepared to pay to change, then start haggling.
However if you go to a dealer with a pricy car to px, they have to consider that they will not get all the money for the new car until they have sold yours. The best deals are always done with either an old banger or no px. Unless you are prepared to sell your car privately and buy an old £500 banger to ride around in in the mean time, I'm afraid most dealers will pull your pants down.