The cast-iron 2.972-litre "Sigma" V6 is Hyundai's own design Engine uses twin overhead camshafts per cylinder bank, with four valves per cylinder The intake system uses different inlet tracts depending on engine speed to help maximise torque at high and low rpm The V6 produces 141kW at 6000rpm, with 260Nm of torque at 4000rpm Hyundai's five-speed "Sportsmatic" automatic transmission is standard on both Grandeur models The transmission incorporates "fuzzy logic" to help prevent "hunting" between gears, as well as a manual override, tiptronic- style function Grandeur rides on fully independent suspension with MacPherson struts at the front and upper wishbones with lower multi-links at the rear Body structure is made stronger by injecting all cabin pillars with foam All seats incorporate anti-submarining design Four-channel anti-lock brakes with electronic brake force distribution are standard on both models The fuel tank is located ahead of the rear axle so it is away from rear-impact zone Grandeur is fitted with split-fold rear seat to increase load carrying capacity Outboard headrests can be adjusted fore and aft as well as vertically