AMONG the technology features that will distinguish the 2007 Lexus LS 460 when it goes on sale next month is an eight-speed automatic transmission. An industry first, the Lexus gearbox will top the mere seven speeds offered on certain Mercedes-Benz and BMW models — even the $1.2 million Bugatti Veyron — and handily outclass the four-, five- and six-speed transmissions in widespread use today.
Is there a need for so many speeds? If so, is it a need based on engineering or on marketing?
A little of both, actually: Officially, Lexus says that eight ratios were necessary to meet its goals for acceleration and fuel economy. Sure enough, specifications released by the company confirm that the new car is quicker than its predecessor and uses less fuel, even though it weighs more.
As for marketing, the chief engineer of the LS 460, Satoru Maruyamano, told Automotive News, a trade publication, that Lexus wanted to be the first with eight speeds.
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