S or Sport: This is commonly described as 'Sport mode'. It operates in an identical manner as 'D' mode, except that the transmission up shifts change much higher up the engine's rev range. This has the effect on maximizing all the available engine output, and therefore enhances the performance of the car or truck, particularly during acceleration. This transmission mode will also down change much higher up the rev range compared to 'D' mode, maximizing the effects of engine braking. This transmission mode will have a detrimental effect on fuel economy. Hyundai has a Norm / Power transmission switch next to the gearshift for this purpose on the Tiburon.