Right well I've just got back from viewing it...
First off all I can say is I am disappointed at how it drove! Felt very underpowered, slow even! I was expecting a lot more from a GTI. I'm hoping it was just this car and not all GTI's! This is the first one I've ever driven so I have nothing to compare it to. Maybe the fact that I've just sold a 330D which was pretty quick.
It turns out the engine was only replaced 200 miles ago with a refurbed one that had apparently done 60k.
Also the condition of the car wasn't great. It looks as though it had never seen a wash mitt in its life! It was covered in dust, tree sap and birds s**t! Quite a few scratches as well. Doesn't bode well for how it's been maintained! The owner has owned it 2 years and wasn't aware the DSG box needed an oil change every 40k either. It needed 3 new tyres, DSG oil change and a machine polish possibly a full detail.
It was only showing 18 mpg on the dash! Seems too low to me?
He's got it up for £4.5k which Is why I wanted to look at it in the first place but I think ill leave this one well alone.