Put my roof box on and the weirdest thing, my mpg has gone up by 3 mpg from 47.7 to 50.7mpg
R remdroo · Registered Joined Nov 8, 2015 · 100 Posts Discussion Starter · #1 · Jun 6, 2016 Put my roof box on and the weirdest thing, my mpg has gone up by 3 mpg from 47.7 to 50.7mpg
J Jake · Registered Joined Jun 7, 2016 · 10 Posts #2 · Jun 8, 2016 Usually the complete opposite, the extra drag should be making your MPG worse!
