wow someone like my shiny tray
last fillup was about 9.3$/gallon, and that was an early fillup as max prices would go up by a cent the next day! it's been like that for a while though...
i don't have exact figures but current tank to tank results indicate i went from 6.3l/100km to 6l/100km with the under tray
so it's saving me about 0.47euro/100km
the tray should pay off in less than 3 months.
i'm thinking of doing a rear defuser this way as well.