Thread: Tranny News!!!
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      05-03-2007, 10:06 PM   #10
First Lieutenant
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Drives: BMW
Join Date: Mar 2007
Location: US

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8-speed for better fuel economy

8-speed is for sport automatic. M3 is still being tested with 7-speed M-DCT. 8-speed is going to be trend given that Lexus LS460/600 and IS-F are using it. 8-speed also boosts fuel economy 6% more than 6-speed in similar application. The new ZF transmission has been designed with hybrid and all-wheel-drive in mind.

It won't be difficult for BMW to apply 8-speed M-DCT in future model, one clutch controls odd gears 1,3,5,7,R and other clutch controls even gears 2,4,6,8, looks fairly distributed from mechanical stand point.