Also in addition to those features mentioned above SX6 over At-X also scores: Full size Alloy spare wheel, unbody aerodynamic wings and skirts,chassic bracing, rear spoiler and bodykit including sports grill and tinted headlamps and tale lights, premium steering wheel and gear shifter, 6 stacker, alloy sports pedals and sportivo scuff plates and fog lamps. SX6 to ZR6: Front and rear parking/clearence sensors, front 4way and 6way electric seats and yeah thats all i can think off at the moment. Bigger difference with series two though. gets things like exterior heated mirrors with memory with auto tilt and auto tilting rear vision mirror, rain sensing wipers and also gets the power shade so series two owners get a car that pretty well packed with fruit!