Depends what you drive.
Note: I think the above is in American mpg. That isn't my title. Source: http://blog.automatic.com/cost-speeding-save-little-time-spend-lot-money/
My Honda Insight 2 seems to behave a bit like the Civic in that graph. Seems to get best mpg around 55 but 70 is a sweet spot. It seems to lose a few mpg at 60.
I regularly drive that stretch of the M1. The problem isn't so much the speed, it's the morons that drive too close to each other.
Note: I think the above is in American mpg. That isn't my title. Source: http://blog.automatic.com/cost-speeding-save-little-time-spend-lot-money/
My Honda Insight 2 seems to behave a bit like the Civic in that graph. Seems to get best mpg around 55 but 70 is a sweet spot. It seems to lose a few mpg at 60.
I regularly drive that stretch of the M1. The problem isn't so much the speed, it's the morons that drive too close to each other.
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