Posted 31 August 2015 - 09:40 PM
As an FFH owner of only 4 months, I'll take a stab at this one. I have a spoiler as part of the standard equipment.
As I understand it, the EPA ratings on the FFH are 44/41/42 city/highway/combined. The lifetime MPG after 11800+ miles is 45.6 MPG, most tanks are 42-47 MPG and 2 tanks have been 48.7 MPG. I don't think the spoiler has hurt a thing since I can outdo the ratings hands down.
Oh and this is with an added 30+ pounds of a donut spare (and jack and handle), then the added weight of a strut tower brace, beefier rear sway bar and hood struts too. Nope, I still don't see negative impact.
Edited by Cobra348, 31 August 2015 - 11:55 PM.
GrySql, corncobs and Wyotesthybrid like this
Larry - aka Cobra
Big Red: 2017 FFH SE, Ruby Red, Med Light Stone leather
602A SE Luxury Package, Park Assist, Adaptive Cruise Control w/stop & go
Driver Assist Pkg (lane keeping, BLIS, auto high beams, rain-sensing wipers, heated steering wheel)
My additions: WeatherTech lasercut floor mats, in-channel wind deflectors (dark smoked),
Steeda strut tower brace, Steeda rear sway bar, Steeda hood struts, Ford donut spare,
blacked out grille
Summer rims/tires - 17" Verde Regency rims with OEM tread
Winter rims/tires - 17" OEM rims with Goodyear UltraGrip WRT Ice