I know my hands are somewhat tied with a 6-speed automatic, but the best highway trip mileage I've achieved using ECO drive mode is 41.3 mpg on a vehicle that's EPA rated 31 highway. I do not use cruise control, as I seem to get better mileage when I feather the pedal myself, and traffic is too heavy for pulse and glide. I coast in gear on downhills, resulting in open loop and fuel cutoff, and try to get a running start on the uphill letting the speed bleed off gradually rather than forcing it. Any more suggestions on how I could improve mileage - other than coasting in neutral?
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