We don't use or need overdrive for extra power especially when overtaking. Overdrive serves like (parang) the 5th gear and/or the highest gear in a 4 speed A/T in the case of Xpander which allows the engine to operate at a lower RPM for a given road speed.
Sorry for that sir, But if you want to Visit to Our Showroom , I assist to Check the unit and Same day Book test drive For Free Pls Contact : 09913796635