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Back to that original question, how much fuel ( and tons of carbon emissions ) could be saved if car makers simply added an extra crease or two to bring their Cd figures down into the mid twenties ?
Lets just forget changing the CAFE standard complexities and think about about how much is wasted simply to bad design. As we can clearly see by looking at the above images, low drag cars can look quite ordinary.
The MB B class looks much like any other hatchback on the road, yet has a Cd count of at least 7 counts lower. The same with the Lexus. Next time you see one of these cars in the parking lot, stop to take a look at it. They look entirely average. Even the wheel spats seem undersize, yet the car is around five counts better than most cars out there.
So it seems that with just a little bit of tweaking, we could all be driving cars ( and some trucks ! ) with Cd figures in the mid twenties.
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