I HATE dealer-speak!!
It's a tough one... since it is a very nice looking car, but once you start thinking about it, it's a no-brainer ("NO") unless he seriously changes that asking price!!
It's 10% over avg mileage (not a prob), but it's also 20% over avg price (even for dealer-prices, they should be <£7k and he's asking nearly £8700!)... so not sure it's a good deal: for that kind of money you'll get either an avg spec 2004 genuine S-Line spec OR a 2003 model with a few expensive extra (e.g. sunroof, leather trim and an actual Audi satnav, not just the mention of one!).
PARKERS LINK to 53 plate 1.8T Sport
If the price hasn't put you off completely: here's the reasons you should be able to beat him down a lot: probably £7k is reasonable...
1) that "average" is based on average extras, so should have a few more things than an arm rest and a parking aid... so needs to be above avg spec before you even above avg price: just remember, you could be looking at a fully loaded (inc Sat Nav, leather, genuine bose) average mileage version of that car for £7k on a private sale.
2) "child friendly" seat belts are NOT the same as ISOfix blocks - if it's not got the front-airbag disabler on the side of the glove-box then it's NOT got the child-pack.
2) RNS-E just mentioned, is NOT included - they're £350-£500 to buy and can be bought, fully fitted for £600-£900 depending where you are in the country and who you want to fit it - even if he offer to fit it for free, that's still at least £1200 over priced!
3) Those alloys are RS4 "style" replicas, NOT actual Audi RS4 wheels... some of those reps are actually cheaper (inc tyres) than he could have sold the genuine Audi Sport alloys for 2nd hand t (especially if the originals are 18" optionals), so can be used as a cheap way for a dealer to replace the tyres: if he says he thinks they are real (and adding value), then point out that if they were genuine RS4, then the wheels would be sticking out so far they would be iillegal... hence why the RS4 has the wide bodykit!
4) be careful of the stereo: he's mentioned the sub, but avoided actually saying "Bose", so i'm guessing that's also retro-fitted. Concert is the bottom spec CD... Symhpony is the next step up with the multi-CD loader in the front and then the Sat Nav versions...
5) definitely NOT S-Line or even full S-Line "styling"... might not even be a Sport given he's changed the suspension himself, but since it has the three-spoke wheel and assuming it is sports seats, it probably a least a Sport, but should say so on the V5C in the model name. The front lower splitter is definitely retro-fitted and not by a dealer: if it was, then it should also have the door-blades, slightly larger rear spoiler, rear lower body-kit, etc if it was a genuine Audi- fitted S-Line or even a late-model "Sport" bodykit. Being picky now, but since there's >£300 cost difference in fitting, it's worth picking holes in what he's asking: I think they've used the original top bumper too, rather than the one that matches the lower one properly: in short, it's it's missing nearly well over £1000 in parts + spraying and fitting to get it to look like a proper S-Line...
Assuming it's a decent car once you get a closer look, then probably look to pay £7k, £7500 if he puts a proper RNS-E in it... and you'd still be pushing the average up...
