• Feb 21st 2008 at 3:46PM
  • 8
After being all about diesel at the Detroit Auto Show this year, it looks like BMW is going the next step by adding in hybrid technology next month at the Geneva. A new X5-based concept, apparently called the Vision EfficientDynamics, will be on display and it will employ the mild-hybrid system that BMW is developing in cooperation with Mercedes-Benz. In this application, BMW has combined the system with the 201 hp 2.0L twin turbo diesel used in the 123d. Based on the diagram you see above, the hybrid system uses a 120V lithium ion battery that doesn't appear to be much larger than a regular 12V car battery. Electric assist comes from a 15kW motor paired up with an 8-speed automatic transmission. A solar roof is apparently used to pre-heat the transmission fluid, presumably to improve efficiency during cold starts. Mercedes already showed several vehicles equipped with this same mild hybrid system at the Frankfurt Motor Show last September and it's expected to go into production in 2009.

[Source: CarScoop]

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    • 1 Second Ago
      • 7 Years Ago
      Boy! there are a lot less complicated and cheaper ways to get 36mpg than this

      Not in a 4000lb SUV.
      • 7 Years Ago
      43mpg would be with imperial gallons. In US gallons it gets 36mpg
      • 7 Years Ago
      AFAIK it gets 43Mpg.
      • 7 Years Ago
      If it was so easy a lot more companies would already be doing it. As for this, an SUV of this size/weight getting 36mpg (US), I think that's excellent.
      • 7 Years Ago
      The X5 is more like 5,000 lbs
      • 7 Years Ago
      Boy! there are a lot less complicated and cheaper ways to get 36mpg than this. I don't see the advantage; in fact it's pretty ugly to boot.
      • 7 Years Ago
      Which starter is 20hp?
      Dodge Cummins 6.7I6?

      • 7 Years Ago
      A MILD hybrid with a 15 kW motor and a 150 kW ICE.

      Why even bother? Just use the starter motor, its almost as powerful anyway.
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