Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - How to decide whether to remove rear spoiler to decrease drag, improve mileage

capnbass91 · 04-21-2011, 05:07 AM

Ok, so from what I got from all this is this:
A spoiler that points up in the back increases drag, therefore decreasing the aerodynamicness of the car, but keeps it on the ground better which is only good at reeeally high speeds.
A spoiler that is flat or slightly pointed down is good, helping the air flow over the car and decreases drag.

My car's trunk curves down a lot at the end, so as long as its not over like what 12/13 degrees it helps, right?

04-21-2011, 05:07 AM	#86 (permalink)
capnbass91 EcoModding Apprentice Join Date: Apr 2011 Location: Orange Country, CA Posts: 102 Fiesta - '12 Ford Fiesta SE 90 day: 31.45 mpg (US) Thanks: 36 Thanked 3 Times in 3 Posts	Ok, so from what I got from all this is this: A spoiler that points up in the back increases drag, therefore decreasing the aerodynamicness of the car, but keeps it on the ground better which is only good at reeeally high speeds. A spoiler that is flat or slightly pointed down is good, helping the air flow over the car and decreases drag. My car's trunk curves down a lot at the end, so as long as its not over like what 12/13 degrees it helps, right? Last edited by capnbass91; 05-01-2011 at 02:59 PM..