I bought a 2016 model which had never had a DSG service or Haldex service, I bought it with 38k miles on the clock in May this year from Corkills VW in Wigan.
We agreed the DSG would be serviced there and then by VW with nothing for me to pay as it was due, they wouldnt clean the pump filter with the haldex service so I said dont worry about it and got it done when I received the car at a local VW "Specialist"
I did also barter for a few other bits and pieces added on and when I received the car during lockdown I wasnt happy with the state of the wheel so they agreed to pay the referb on those too.
I didnt haggle at all on list price or PX price.. but I did come away with the following
A minor service & Major service over the next 2 years
Free delivery from Wigan - Kent
All 4 wheels referbed (£480)
Car has been excellent for the last 6 months... absolutely love it, i rarely see many problems with these cars posted on the forums, the most common issues seem to be coolant leak (thermostat housing is rubbish) & rough idle/misfires which seem to be injector related.
Overall seems like a really good car, it feels well put together when driving it if that makes any sense at all!