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More gears often equals more efficiency, so we're glad to see Hyundai release its own 6-speed automatic gearbox. Most manufacturers purchase ready-made auto boxes from specialist companies, but Hyundai's gone the route less traveled. The company joins Toyota, Ford and General Motors as the only manufacturers that actually designed and built their own six-speeders. Compared to the outgoing 5-speed box, the new unit is 26 pounds lighter and uses 62 fewer parts, despite adding that extra ratio up t

While many high-end autos are boasting seven or even eight gears in their transmissions, mainstream vehicles often are saddled with units including only half that many. The lack of mechanical gear ratios is rather detrimental to fuel economy, so we're happy to see that Ford is launching more six-speed units for both front- and rear-wheel-drive applications. The new 2009 F-150 will feature a six-speed, and considering the huge sales numbers of that vehicle, the 4 to 6 percent improvement in fuel

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