Rear Spoiler

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This is a sample picture

Introduction
The use of low profile rear spoilers that reduce over all drag.

Instructions for mod

Remove any existing wing type spoiler or rear cargo rack. Buy or fabricate your aero spoiler and install.
The type of spoiler you are looking for will be small, it will be 5/8 inches long plug or minus 1/4 inch (15mm +/-6mm), 3/4 of an inch seems to be the sweet spot (19-20mm).
The spoiler tilt needs to be about 20 degrees off a vertical axis.

User experiences

User data

User Name	Car Make, Model, Year	Cost of Mod	Time to Perform Mod	MPG Before Mod	MPG After Mod	MPG improvement guess	Instruction Link
Example Data Saand	Example Data Mazda, 626, 1991	Example Data $5 USD	Example Data 1 Hour	Example Data 27.2	Example Data 29.8		User mod detail or measurement detailed data

Problems / Consequences of mod

If the rear spoiler is not properly made then it will increase drag.

References

Forum thread links

Rear spoilers lengths and angles

Induced drag spoilers

External links

Flow Field Features and Aerodynamic Drag of Passenger Car <<< Page 26, Rear spoilers

How to decide whether to remover a rear spoiler to decrease drag