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Drag Limited

What speed provides the best mpg on a flat road?

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Just drove 192.9 km (120 miles) to Everett, WA where I'm about to fill up after getting the yellow low fuel warning. My remaining range is 18 km... good thing I didn't attempt to push on to Seattle or else I'd be stranded on I-5.

 

My fuel economy for this trip was 5.9 L/100 km (40 mpg), slightly better than the 6 I got last time. I took everyone's advice and set the eco cruise control (sadly I don't have the adaptive cruise) to the posted speed limit at all times. It did make a difference.

 

Btw, more than half the paving on I-5 from the US/Canadian border to Everett leaves a lot to be desired. The ride was VERY shaky over that stretch and I was afraid that something would come loose inside my FFH and give me non stop rattling (didn't happen thank god). The last 50 km was much better and I got the super smooth ride I'm used to back on my local roads.

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