Found myself looking at autotrader at Z4...guess the itch is still there !
This one is 30miles away, looks decent spec, mileage but the aftermarket rear spoiler and failed MOT for illegal plate suggest it was once own by a boy racer of sorts.
I wouldn't say the spoiler and tyres mean it's been ruined by a boy racer. The MOT advisory is also nothing to worry about either. I got my Z4 MOT'd earlier this month by BMW and they also listed that as an advisory (but then had it removed somehow).
It's actually also almost fully loaded for a Z4 spec wise; adaptive suspension, heated seats, lumbar adjust, DAB and professional Nav, amongst other things like adaptive high beam assist lights.
However, the Autotrader advert lists comfort access (keyless entry and go), but I don't think it has that, which is a tad worrying. It's also not an Msport which does look better inside and out, but probably explains the lower asking price. Finally, the 293 wheels are one of the 19inch styles that are prone to cracks, so that's always something to consider.
It's also
Kansas leather rather than Milano (may be the dealer getting confused with the merino leather offered on nicer new BMWs?). But it is the extended leather pack.
However, given the market at the moment £17k for a relatively low mileage 35i isn't bad. Back at the beginning of the year the early Msport 35i's were going for this sort of money though, so it may be worth your while to wait if you really are looking to buy.
I think the Z4 boot is actually surprisingly useful, you'll just need to move the roof back up if you're travelling with it down when carrying a lot of stuff.