Quote:
Originally Posted by DGthe3
I wonder how much gas would this system save?
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"or HCCI, which allows petrol cars to improve fuel efficiency by as much as 15%"
The current, non-HCCI, 2.2 in the Cobalt XFE gets 25city/36hwy...so 15 percent increase: 28/40? Plus the DI and the VVT they've included in the Aura's test engine,...I'd say we're looking at an easy 45mpg four-banger.
Eat that, Prius!!!