Let me start by saying that I am still under the first 1,000 miles in my new Gen III so the car might not be fully "broken in" (although I'm not sure that I believe in a break-in period for the car, only for the driver) but I am finding that my experience so far is similar to Consumer Reports' findings and my FE is not showing much of an improvement over my Gen II. My daily commute is a 4-5 mile drive (depending on which route I take) to and from the Metro station. In the morning, the first mile is mainly uphill, and then it's more downhill for the rest of the way. In the evening, it's not exactly reversed because I usually take a slightly different route, the shorter one, but it still involves about 2-3 miles mainly uphill, followed by a mile downhill. I'm not talking mountainous terrain or San-Francisco-style hills - just slight inclines up and down. There are a lot of lights on both routes, but it's busier and I usually have to stop more frequently in the morning. Up to now I hadn't paid much attention to whether the mileage was better in one direction vs. the other. All I know is my overall average mpg (including longer highway trips) was only around 44mpg in my Gen II. For my Gen III, I've had two fill-ups so far, and am averaging around 45. Anyway, for the past few days I've been resetting my Trip B meter at the beginning of each trip in the morning and the evening. I have found that my for morning commute, which is more downhill, I can get 47-51mpg on the display. The last part of the drive consists of climbing ramps in the garage in EV mode. However, on my evening trip, no matter how hard I try, I am only getting 36-40 mpg! That's a big difference, and would account for my overall mediocre FE. I have also observed this for longer highway trips (about 30 miles each way). In one direction, the displayed showed 63mpg. However, on the return trip, it went down to 55mpg (this was the average for both directions because I hadn't reset the meter for the return trip). Again, I believe the difference was due to the the topography. Sometimes I can't even tell whether I'm going uphill or downhill, except by looking at the mpg display and knowing how hard I am pressing the gas pedal. P.S. I realize that my topic title could be considered "No-duh", but I haven't seen a specific thread on this topic before!