How Much Does a Rooftop Carrier Affect Fuel Economy? | JEGS
Tune Up, Slow Down and Unpack to Squeeze Extra MPG
Blog Post | Ditch that Roof Rack and See Your Fuel Economy Soar | Car Talk
Roof racks a drag on fuel economy | University of California
Did you know car roof boxes can increase fuel consumption by 35%? - Daily Record
Amazon.com: TACTIK Rooftop Cargo Carrier Hard Shell, X-Large, Dark Slate - Rooftop Cargo Carrier for Top of Vehicle - Car Roof Cargo Carrier - Load & Unload from Both Sides - 57"
Fuel consumption impacts of auto roof racks - ScienceDirect
Mini-experiment: the wrath of roof racks - MetroMPG.com
Petrol prices: Roof racks, storage pods can increase fuel consumption | news.com.au — Australia's leading news site