Expected room for negotiation when selling a used car?

Lemoncurd

What sort of room for negotiation is expected when buying/selling a used car?

We're selling a car privately and looked at the free car price guides to come up a price.

Parkers, for example, gave the following:
Independent Dealer £5,115
Private Good £4,810
Private Poor £3,590

The car has 120,000 miles where Parkers assumed 90,000 but it does have quite a lot of extras including full leather interior, Xenon headlamps, Bose sound upgrade (each of these options would have cost over £1000 extra when new) + a few others.
In our opinion it is in good condition for its age ('51 plate) but there are a few minor scuffs on the exterior and a couple of very small 'door dings'.

We decided to price it towards the lower end of the Parkers range at £3850 putting the price below the comparable cars on Autotrader. Within an hour of placing the ad online someone called which seemed promising! They said that they thought it was overpriced and the max they would pay was almost £500 under our asking price. Just wondering if it would be unrealistic to hold out for a bit more? Have paid for 3 weeks of advertising so obviously have room to drop the price in the next few weeks.

An independant garage offered £3000 for it a few weeks ago, we've since spent nearly £200 on essential work on the car and advertising so we might as well have handed it over for that price if we knock too much off.

Gordon_Hose

Hold out for some more offers. Of course buyers will say it's overpriced, they're after a bargain.

Set a lower price for yourself and stick to it, if you've paid for 3 weeks advertising you're clearly not in a rush to sell it

I sold a car once and set myself a lower price of £2000, I had stupid offers of £1200 to £1500 but stuck to £2k and got exactly that in the end.