THE Liberty B4 clearly takes its role as a Q-car very seriously. Out on the road it is hard to differentiate the sports model from a middle-range Liberty RX, unless you come at the car front on, but even then you'll have to be virtually on top of it. Externally, the only distinguishing features are the integrated bonnet scoop to channel air onto the intercooler, 17-inch BBS alloy wheels and a "B4" badge on the left-hand side of the bootlid. The rest of the car is pure RX Liberty.