In contrast to the angular XT, the SVX featured softer lines with its two-piece power side windows. The windows are split about two-thirds of the way from the bottom, with the division being parallel to the upper curve of the door frame similar to the half-windows of the Lamborghini Countach, DMC DeLorean (another Giugiaro design), and the McLaren F1. The SVX featured a drag coefficient of , identical to that of the XT coupe it replaced. European market cars had a slightly lower wind resistance of , thanks to a larger undertray.