b r – Member
Is it also that you had more ‘load’ in the car?
I have found no difference between 1 bike & 2 Bikes tbh, Similar reading when alone or with riding buddy
b r – Member
And I’d imagine that bikes on the roof would make far more difference, as just the roofbars use to knock my petrol Vectra from 33mpg to 30mpg.
My mate has roof bars & reckons he looses approx 10mpg fully loaded
Hard to know, 2 bikes on roof facing forward, two on bike side on, either way a difference is noticable when driving!