One of the low-key technical highlights of this week's Frankfurt auto show is certain to be the first public showing of ZF AG's first 6-speed automatic transmission. Known internally as 6HP26, the new gearbox goes into production in 2001 and is claimed to deliver a 5%-7% fuel saving compared with a 5-speed automatic. ZF has reduced the number of individual parts from 660 in its 5-speed to 470 in the 6-speed, helping to reduce its weight by 13%. The new gearbox is expected to make its debut ...

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