Anyone know the Coefficient of drag for the 09's?
 

just curious what it is

Haven't been the wind tunnel with the GE8 yet... But I'll let you know. Lol! JK! That's a good question. I'll have to look that up.

I've been looking it up for the last hour and found nothing concrete yet. My old Kia Rio was .31 cd. I'm thinking this one is around .21 or lower. (Random number...lol.)

There's a DIY for measuring Cd here. Let me know how it turns out :popc:

.21? LOL!!! No production car has attained that, not by a long shot.

But I think the GDs were somewhere in the low 0.3s right? I'd guess that the 09s are just 0.01 better, maybe 0.02 better due to the narrower tires.

My bet...0.30 cd. (thank you X-Wing fighter windshield)

I was being sarcastic, I just threw a number out there since I can't find one. The lowest production car is actually .11 for the new Aptera typ-1. They are already being sold. The old Honda Insight was .25 so I'm hoping this car is low .3s like you said. Either way hopefully a few aero mod's and I can get it down lower.

Take out the front and back windshield and it should drop to around .1648...

not likely. the wind would just collect in the cabin and cause more drag.

get what you're saying though

SMARTASSES!!! lol.

Even if you take out the back windshield?

Remember, there is a lot more to aero drag than CD. It is CD x frontal area. Some big semi trucks have great CD numbers, they just have a huge frontal area. Many motorcycles have a terrible CD, but a small frontal. One without the other means very little...

I compared the frontal area/look to my buddys prius. looks might close. In his research the prius was a .29...Your airflow may differ...THUNDER

no figures on this yet?

Simple formula for this!
 

Cd = 1(Cd of Brickwall) + 0

"Sold?" yes. Delivered? no. I know someone that has a deposit on one. It's still vaporware for the time being.

I'm curious too since I got a new 09 Fit recently. Supposedly the front windshield helps more than other cars in this regard in having a low cd. I remember my 99 civic had this number in the brochure, but Honda stopped publishing it for some reason now.

It is more than the windshield for aerodynamic improvements. The roof takes a down slope rear of the rear door and the bottom of the GE also looks smoother than my 07. And less obvious, the sheet metal above the rear wheel arches pinches in to a little more rounded rear end.

As far as cd goes, seems like the mags used to publish that, now not so much.

Thing is, ideally it's crucial for the airflow to leave the rear of the car smoothly as possible. A sedan or steeply raked hatch has better aero angles than our short, chopped off back Fit. Despite how aerodynamic our front is, the rear does us no favors. Couple in the relatively large and square front area and it's not the wind's best friend.

If I were to guess at the cd, it would be around 0.31-0.32.

they say if you don't change the oil until maintenance minder says so, it will help the drag.

A couple of things work in the Fit's favour though. Two big areas where cars have problems is the hood/windshield transition and the wake. Sedans actually have poor aerodynamics because the airflow breaks away at the rear corner of the roof, not the rear of the trunk. This can almost double the area of the wake. In order to keep the airflow attached, carmakers use those nifty little roof spoilers, and if there is a boot, they make it as high as they can. that's why you can't see out the back of so many modern sedans. Most of the time, putting a spoiler on the trunk lid is for rice looks only, because it is in turbulent air and does little to help.

One of the reasons the vents are often in front of the windshield, is becuase the transition makes this a high pressure area.

With the Fit, they have optimised things by reducing the change in angle between the hood and the windshield to a minimum, largely by kicking out the windshield forward over the engine.

Plus the whole car tapers smoothly back to the rear, at the sides as well as along the roof, to minimise the area of the wake. Once the air leaves the roof or the sides, the shape of the tailgate makes no difference, it's in turbulent air that's moving along with the car anyway. the trick is to minimise the size of the tail so that you minimise the amount of air you have to tow along with you.

I don't think the Fit wouldbe as unaerodyamic as you suggest. Certainly 0.31 is likely but small things can undo all the good work. Things like mudflaps or bodykits. I woould expect the Sport to have poorer Cd than the base because of wider wheels and the bodykit.

Here in Aus, our Jazz has a shorter nose and two main shapes - one with a bodykit and fat wheels, and one without.

It would be interesting to see the effect of the USDM specific extended bumper.