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Silver Aero: 2004 Honda Civic EX Sedan Automatic
Displacement: 1.7 L
Fuel type: gasoline
Curb weight: 2668 lbs
Coefficient of drag: 0.32
Frontal area: 22.5 sq.ft.
Instrumentation: Torque app
Description: 2004 Honda Civic EX Sedan in silver, nicknamed Silver Aero, purchased with 152.7K miles.
60% of my driving is pizza delivery, hence the lower tank numbers. Delivering pizza requires me to have a sign atop my car which makes my drag worse than stock per coastdown numbers, even with my ecomods in place. Winter reduces fuel economy by approximately 10%.
Stock drag: .32
Estimated ecomodded drag: .29
Estimated ecomodded drag w/ pizza sign: .33
Personal driving, cruise control: 48-53 MPG. Max speed 40 MPH.
Personal driving, P&G: 50-59 MPG. Max speed 40 MPH.
Personal driving, DWL: 48-64 MPG. Max speed 40 MPH.
Pizza delivery driving: 36-40 MPG. Max speed 55 MPH. Less hypermiley driving.
Personal driving, cruise control: 42-48 MPG. Max speed 40 MPH.
Personal driving, P&G: 47-50 MPG. Max speed 40 MPH.
Ecomodding an automatic '04 Civic Sedan
Next Ecomod: Wheel+tire swap to HX rims w/ 185/75/14 tires
From 18lbs to 11.5 lbs per wheel, 27 lbs saved total
From 20 lbs to 15.7 lbs per tire, 17.2 lbs saved total
44.2 lbs saved total, 138.9 lbs of rotational mass deleted
Coroplast rear wheel skirts (after wheel swap)
Coroplast front wheel partial skirts (after wheel swap)
Rebuild tail extension out of coroplast
Rebuild lower grille block out of coroplast
LED brake lights ($19)
LED interior lights ($7)
Other planned ecomods: LED headlights ($37)
LED reverse lights ($16)
Attempt at homemade VGs to keep airflow attached down the rear.
Aero/low profile windshield wipers (if/when current ones need replacing) -$18
Ecomods under consideration: Redo mirror boattails
Windshield wiper deflector
Weather stripping to seal gaps around front hood and rear trunk
Weight reduction (theoretically +1 mpg per 100 lbs deleted)
Rear seat delete (-29 lbs)
Rear seat cushion delete (-10 lbs)
Passenger seat delete (-37lbs)
AC delete (-40 lbs)
Radio delete (-20 lbs)
Speaker delete (-8lbs)
Total: -144lbs, theoretically +1.4 MPG.
Engine pay underbody paneling from same gen Civic Hybrid or a belly pan
Power steering delete
Official Fuel Economy Ratings
Actual Fuel Economy Performance
Last 3 tanks
View Fuel Log Last updated: Jul 22, 2018
(Created: 2018-02-14 22:45:32 / Modified: 2018-07-22 17:47:35)