>Here's something that surprised me but probably was well known to you quants:
>I bought a 2018 Camry Hybrid several months ago.
>This past weekend, to escape from snow and get some golf in, I drove to Santee, South Carolina - about 700 miles each way from here.
>I was also anxious to see what kind of mileage I'd get from the Camry with that kind of driving.
>The Camry has a sensitive meter that tells you what your MPG has been since your last fueling.
>With local driving around here it gets about 35MPG.
>I live about 10 minutes off I95 and my destination is even closer, so this was a straight line drive on the interstate
>The tank has a capacity of about 12 gallons.
>Same fuel - MOBIL regular, all the way.
>On the way down with below average traffic on I95, I averaged about 45 MPG. OK, but not great.
>Coming back though, I learned a bit more.
>I left with a full tank before dawn. Police in South Carolina ignore speeders, so you have to do almost 80MPH to keep up with traffic.
>I noticed almost immediately that my MPG was about 37.
>As I got into NC and VA where police issue summonses at speeds much over 70 MPH, traffic slowed down a bit and my MPG improved a but the overall tank MPG was a disappointing 42.
>I fueled below Richmond, VA and started with a fresh tank and the MPG was about 45 till I reached DC.
>At DC as things slowed down more and the MPG started approaching 48, I decided to try to find an optimal speed.
>
>At between 55 and 60, it got up to 50.8 MPG, while averaging in those earlier higher speeds. Just accelerating a few MPH dropped the MPG almost immediately, but dropping the speed didn't seem to help as much.
>
>When it got up that high, I also noticed that things like elevation changes start to come in to play.
>
>I suspect that with a fresh tank at 55 to 60 on relatively flat roads it would get up to 52 or 53 MPG
>
>Bottom line, speeds over 60 MPH are expensive and speeds over 70 MPH are VERY expensive.
>
>PS - my golf game needs a lot more work.

My Volvo estate has a real time fuel consumption meter. Foot off the pedal going downhill its maxes out at 99.99. Going up hills if I accelerate I'm down in the low single digits. But yes I try and keep to about 60 and also use a bit of intelligence to avoid heavy braking. In fact the man who services the car always remarks on how little brake wear I have and that's with a lot of urban driving.