New Charger Aerodynamics
 

I just bought a 2007 Dodge Charger. I know not the typical car here. For good mileage I will drive my Scooter or CRX.
Here are a few things I found intersting on the Charger. It has a belly pan under the motor. There is also small lip seals on the front doors to help eliminate the seams. It a coefficient of drag of .33 https://en.wikipedia.org/wiki/Automob...g_coefficients
So they tried to clean up the aerodynamics then just overpowered it so it still gets crapy meilage
https://www.fueleconomy.gov/feg/2008c...umn=1&id=23609

.33 still leaves room for improvement....

The Impala with the 3.9L V6 has more power than your Charger and gets 18/28 as opposed to your 18/24. The problem with your Charger isn't that it has too much power, it's that it has that 3.5L Chrysler V6.

You are compiring new and old numbers. MPG ratings from www.fueleconomy.gov Specs from Cars.com
2007 Impala Old numbers 20/29 New 18/26
3.9L 233 HP
CD .33
200.4" exterior length
72.9" exterior body width
58.7" exterior height
3637 Curb weight

2007 Charger Old numbers 19/27 new 17/24 3.5L 250 HP
200.1 " exterior length
74.5 " exterior body width
58.2 " exterior height
3727 Curb weight

By the way the Impala was the other car I was looking at getting.

Alot of room.

I'd say .33 is pretty good considering that the front end looks like a parachute, and the car keeps getting wider towards the rear. I'm not dissing it, the same look is found on the new Camaro that I love, just saying .33 is great considering how un-slippery the car looks.

Damn, it is VERY slippery considering its shape and masculine humps!!

I really never thought it would be that low on that car, well, then I guess my next mod is door seals! (Not kidding actually a good idea :) )

i disagree with you guys. the feminine humps(or should i say hips) have a very smooth contour that does taper back. dont get me wrong, it is still very much a "manly" car, it just has hips and dudes dont. we are talking about a couple inches here and the real beef with it would be frontal area, not so much .cd. the rear windshield has a very nice taper as well.

i guess the sad thing is any aero mods that would significantly improve the car would make it really ugly. the only thing that wouldnt ruin the cars looks would be an upper grill block and a modification to the bottom of the rear bumper to decrease the low pressure system behind the car.

I plan on blocking the lower part of the grill next. I figure it was designed with enough airflow for the HEMI so I should ok with the V6. I will watch temps on my scangauge. Winter is coming so I should be fine but I will need to watch it in the summer.
https://www.fuelly.com/attachments/fo...e73fc61001.jpg

Lovely lady lumps? Maybe the car would get better FE if drivers didn't keep so much junk in the trunk... :p

What about that huge grille?

yea the grille is bad... but that and the headlight rake are the only things that damage aerodynamics.

i recommend blocking the top half of the grille not the lower, blocking the top half forces air over the car where its slippery. blocking the lower half doesnt do that so well...

wow look at the size of those tires... i bet a 1-2 inch drop would help just a little...

Just found this picture of the underside
https://www.fuelly.com/attachments/fo...f5b39a883c.jpg
This and the first picture are not of my car. They are from a 2006 RT with a Hemi.
My car only has dual untill exhaust about half way back.
My tires are 215/65-17 the ones in picture are 225/60-18
The little black thing by the rear bumper is to help deflect the wind from catching the bumper cover.
Here is a picture of the little black thing on the rear
https://www.fuelly.com/attachments/fo...bee1279a15.jpg
Again not my car. This is another of the parts Dodge dropped on latter modles to save cost.
Thinking also of bringing the belly pan back to the rear of transmission.

a very important step to good aero is how all parts on the bottom of a car are l positioned... it seems they made the effort to align everything so the overall "landscape" roughly follows the line you'd want the air to take... some car have exhaust ans suspention componets etc hanging out in the flow...

So, why not do a complete swap on the car?

Mount the engine in the trunk, and reverse the interior and voila! instant teardrop!

You know that it would look crazy seeing that car coming at you and it looks like its in reverse. :D

besides, with the nice spoiler it acts as a giant airtab to help promote airflow over the whole car!
https://www.autocult.com.au/img/galle...eOmata3565.jpg

and as and added bonus, all or your doors are suicide!