Quote:
Originally Posted by doasc
So taking a roundtrip at highway speeds (55-70mph) and all "other" things being equal. Would you expect the THH to get better gas mileage on a hilly trip than a flat trip?
Obviously, with a round trip the uphill and downhill portions are mitigated. However, this would be an interesting data point. Since from my experience, conventional non-hybrids do worse. The downhill coasting doesn't seem to compensate for the increased consumption going uphill.
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I can say for a fact, by gauge in vehicle, that going uphill takes away much more mpg than when coasting/driving downhill. You can really see it drop when going uphill, but when it climbs, its much slower to do so. All this assuming the gauge is pretty accurate.
I switch back and to from the mpg and watch the gas/electric to the wheels and most always its getting power from both. Obviously, its not giving any electric power when climbing a hill of any height/length. But on a fairly flat surface, it does show that its getting power from both.