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Discussion in 'Gen 5 Prius Fuel Economy & Prime EV Range' started by DecorahDave, Nov 27, 2023.
No, OP's EPA values are correct.
For some reason, I thought the OP had an AWD version so my bad.
they said at 75 mph with the limited, they averaged 49 mpg on cruise control over 200 miles with no traffic
can anyone confirm or deny this number at a steady state speed?
After some more miles, I have better news about mileage in my 2023XLE. My wife and I had to go to a Funeral about 125 miles one way. I asked her to drive going to it and I would drive coming home at night. I reset the mileage just before the start of the trip. It was about 40 F to start and 45 F when we got there. The best I saw was 55.7 mpg and finished at about 55.4 mpg. We did not run the heater because the sun was bright and comfortable. When we left the funeral, it was about 4:30PM and temperature was about 40+F. The headlights came on before 5PM. Left the heat turned off. When we arrived back home, 54.4 mpg indicated. On both legs of the trip, cruise was used all the time possible. We drove through less than a dozen small towns with only a few full stops. I now think the heater, outside air temperature and maybe the lights have been my problem. My wife's great mileage of 68.2 in her 2023LE, on a trip to see the grandkids is not a fluke. She only got 60+ coming home. I will continue to log fuel purchases and miles to get a longer-term picture. I am not as unhappy as I was.
Temperature, topography, technique, and speed.
You will get the best MPG's in mild temps (no heat/ac), over longer trips, on flat roads, at moderate-low speeds.
The big variable you can control is technique (ie. accel/decel, gliding/coasting, anticipation).
I have a 2023 Prius LE purchase August 16th. Currently have about 2300 mile. I live in the North County in the Florida panhandle. About 120 miles were on the interstate driving between 70 and 80 mph just playing around to see how the car handled speed..(it is a delight)...the remaining time is mostly spent driving at 55 to 60 with the cruise control on..limited time spent in stop and go traffic. Temps have been running from hot and dry August through September with temps currently between mid 30's this morning, warming to 50's 60's range.
Average mpg's since new 62.1.. I am a happy camper.. This is my second Prius.
Here are two cent comments
1) Tire pressure can be a factor.
Many bump up one or two psi, yet a pyrometer seems to be a foreign tool to many.
Note a high-quality air pressure gauge can be an asset.
A gauge that reads in 1/2 pound or 1/10 of a pound.
2) Wheel alignment could also be a factor.
Again a pyrometer in addition to one's eyesight can help with analysis.
Note appears the car is new, but there are assembly tolerances.
OP's warranty may cover alignments for the first year, otherwise, the hundred plus dollar alignment cost will offset any fuel savings cost.
3) Winter fuel blends typically give lower mileage than summer blends.
4) Yep, use of heater seems to affect mileage.
5) And yep, you still need to use the "go pedal" for acceleration; on-ramp merging and lane changes.
With that said...... check the tire pressure