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Old 12-18-2012, 10:22 AM   #1 (permalink)
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How "aero" is this 2014 Cadillac ELR?

...what are the Cd guesses?


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Old 12-18-2012, 10:39 AM   #2 (permalink)
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I have never even heard of the ELR until right now, looks cool though.

A shot from the hip says 0.27. That roofline looks great, and Cadillac seems to have a way of keeping Cd down even with the giant grills and mirrors.
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Old 12-18-2012, 11:38 AM   #3 (permalink)
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Here's the overlay.



And here's the same pic biggerer.

Pretty dern close, don't know of any Detroit iron shaped quite this well off the back.
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Old 12-18-2012, 11:50 AM   #4 (permalink)
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Keep in mind that while shape optimization is the "obvious" path to achieving low drag, the other important part is detail optimization. Two identically shaped vehicles can have drastically different Cd's based on differences in things like: cooling system capacities, wheels/tires, underbody design, trailing edge treatments, side mirror design, wiper location, etc.

All of which makes it hard to predict Cd based on a roof line/profile shot.

That said.... realistically, this will probably be very close to the Volt. Because: with a range-extended EV, efficiency will be an important design goal, and it'll have similar drivetrain/cooling requirements as the Volt.)
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Old 12-18-2012, 01:03 PM   #5 (permalink)
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Quote:
Originally Posted by ChazInMT View Post
Here's the overlay.



And here's the same pic biggerer.

Pretty dern close, don't know of any Detroit iron shaped quite this well off the back.
Well this pic is a Volt in the 2 door skin. The Volt published cd is 0.28. The ELR has funny rear view mirror cameras, and I think it has a different slope to the hatch.
Volt-

ELR-
A few pix of the ELR

-mort
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Old 12-18-2012, 01:24 PM   #6 (permalink)
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Well Mort, Either your wrong or Autoblog is wrong. You decide.
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Old 12-18-2012, 01:27 PM   #7 (permalink)
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Looks like cab-forward. Thought manufacturers abandoned that. Glad they changed their minds. '98-'04 concorde had a cd of .288. And that was before gas was expensive and aero was more important.
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Old 12-18-2012, 03:09 PM   #8 (permalink)
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Whatever the Cd is, it looks nice.
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Old 12-18-2012, 03:24 PM   #9 (permalink)
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Looks great, wonder how much they could improve the wheels?
regards
Mech
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Old 12-19-2012, 04:43 PM   #10 (permalink)
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Looks similar to the Pontiac G6 coupes...

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