I saw a news that says cars are more efficient and the stated objective of several new auto makers. The Ford Motors officials have confirmed something brand new in this quest. Seven- and eight-speed transmissions are the newest thing for Ford Motors. These high-efficiency transmissions are already being used in Bavarian Motor Works, Audi and Lexus automobiles.fuel consumption is higher in low gears because the rpm of the engine is higher. For each car there is an optimum ratio distance/fuel consumption. I read this here:
Quest for fuel efficiency leading to more high-gear transmissions.