At first glance there are a lot of Q2's on auto trader for 15/16k of the same year. But if you put filters to be automatic gearbox (seems to command a lot more), similar mileage and the specific 1.5TFSI engine, I'm getting 21.5 down to 18.5 from dealers within a 40 mile radius of OP.
OP's listing is 20k.
Thank you.
The problem is a BMW dealer doesn't really want your used Audi. Really the p/x is just a way of securing a sale rather than because they plan to make money on selling Q2s. Put yourself in their shoes, they need to get it cheap enough that they can turn a profit selling it to auction OR with enough markup to fund the overheads associated with running a dealership, offering warranty, prepping the car for sale etc etc.
Putting your car through HPIvaluations, assuming Excellent condition it comes out at:
Trade-in: £14.7 - 16.1k
Private: £16.75 - 17.5k
Forecourt: £17.4 - 19k
If we take the top numbers from all that what it implies is you could expect to get up to £16k trading it in or £17.5k selling privately. This is exactly in line with what I said earlier about a minimum £1.5k overhead for selling to a dealer.
Rival cars should be going for £19k from dealers (as we can see on AT).
Really you want to be getting at least £15k trade-in. But it depends a bit how much you are buying the 320i for and how good a deal that is. If its listed at top whack then there's possibly some wiggle room there. It really doesn't matter if they drop the price on the new car or they give you more on the p/x, all you need to worry about it minimising the cost to change. It can be an issue if you've approached the dealer with the most competitive price as they already know that so will resist dropping their price. But you go in armed with the CAP valuations to explain you know your trade-in is worth more than their offer. What you don't do, and I'm not suggesting you have, is say "oh I looked on AT and saw the same model up for sale for £19k" because then you lose credibility, they can easily bat that argument away, it's like saying to a restaurant "I ain't paying £20 for this steak pal it's a fiver in Lidl!". It's harder for them to argue against CAP.
I didn't try and sell it to BMW to be fair. I've been to Audi with it in the recent past.
I think the OP needs to compete with the £18.5K dealer price to achieve a private sale, somewhere in the £17.5K region might incentivise a buyer with a view to a haggle down to £16.75K or £17K?
If it goes that low I'll just keep it.