08-24-2007, 09:15 PM
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 | Administrator  | | Join Date: Jul 2007 Location: New York City/Miami
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| Eco-friendly Z4 coming...
Eco-friendly BMW Z4 on the way  BMW has found another way to tweak mileage and CO2 output levels through its Efficient Dynamics program. In this case, its efforts were spent on a revised gearbox for the Z4. While past efforts have included the adoption of formerly hybrid-only technology like regenerative braking, an Automatic Engine Start/Stop System, and even full-on hybrid research, this latest move is a lot more conventional.
The technology being shown on the Z4 illustrate how little changes can add up when combined. By using a new, more efficient rear transaxle, the Z4 is able to record lower CO2 emissions levels and better economy. The improvements can be seen on all six-cylinder Z4s except the Z4 M, with a typical improvement of 1-2 percent across the board. Again, it's not much, but definitely a move in the right direction. Four cylinder cars get other changes to their engines that result in similar improvements. All of these eco tweaks will go into effect on cars being produced starting next month.
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