I think the OP should have phrased it "for sale" instead of "trade". Doubt many will trade their E9x for a Mini, but may want to out right purchase.
E90///M3 : ESS ECU & Shift tune w/ full ESS exhaust | KW V3's | LUX AE | 19" TE37's | Mode Carbon V1 lip | JB's CF trunk spoiler
Scion xB: modded up and is the DD
Ford Flex Ecoboost: ECU Tuned w/ intake (wifes)