Hum, mine is to new and not driven far enough to advise though I believe you can trust their numbers. My 2016 prius got stupid great mpg and I will be happy with this 36mpg suv.

 

Mine is an LE FWD. I got about 33 on an 1100 mile road trip going 80-82 most of the time. I get high 30s in mixed driving including short trips, with maximum speed of ~60 on two lane roads.

 

Only owned for five days and with the corono virus I haven't been doing a lot of driving but trips I have taken seem to indicate mid 30's around town to be no problem even with cold starts as long as you drive a couple of miles. Longest trip so far was the first day of ownership - 20 miles to pick up dinner to go from a favorite restaurant - and I averaged over 40 mpg over secondary roads that included stop and go and varying terrain. I've been using the eco mode and find performance more than adequate for around town. I've only driven on high speed freeways a couple of miles so far so what find of fuel economy it gets on long trips at 70 mph remains to be seen but 90% of my driving will be on secondary roads around town so I'm happy with the results.

 

Thanks guys .

 

One thing I noticed today that might bode well for highway mileage.

With the Gen 3 Highlander Hybrid you could get up to about 40 mph in EV mode before the ICE would kick in. While traveling on a 55 mph stretch today my 2020 Highlander Hybrid was still in EV mode providing propulsion at 55 mph. Not sure what the top speed is now for EV mode. This is not the push button mode for EV but the normal operation when the EV light on the dash comes on to show electric propulsion only.

 

Top speed for EV mode in the 2020 appears to be about 75 mph, which is a bit higher than a Prius (73). I made a 67-mile mostly highway trip today and got 34.6 mpg (AWD). City mpg seems to be higher.

 

Did you find this out by driving or is there some actual documentation about 75 mph top speed with EV? I'd be interested to see if there is some tech info out there. Looking a the vehicle certification label on the driver's door jamb I can tell the the 2020 Highlander Hybrid has a P810 trans-axle - my 2017 had a P310 - but I cant seem to find any specs for the P810 anywhere.

 

I noticed it while driving. EV indicator comes on at 75 mph, if only for a brief second. I've also read this in reviews of older generations of HiHy.

 

My recent trips have all been in the 40+ mpgs. Will be able to confirm once I fill the tank for the first time.

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Wow! That's remarkable. Are you barely touching the gas pedal? Someobe on here had mentioned that normal driving mode yields higher mpg than ECO mode. Which setting do you have yours on?

 

I'm still lacking an understanding of how the real-time fuel economy on the dash is calculated. Is it actually based on a fuel flow measurement or is it an estimate based on engine activity? I believe that the per-tank and the per-trip fuel economy can be calculated by measuring the fuel level in the tank but there's no way that fuel tank level can be used to tell you that you are getting 50 mpg going down a hill.

For real-time readings, you either have to know exactly how much fuel is being used or estimate it. Measurements of fuel economy like on Mythbusters use precise flowmeters and estimate fuel economy over something like 20 miles . Somehow, I don't think cars include precise flowmeters that can tell you what your actual mpg is over that 1 mile stretch so my guess is that is all estimated and not based on actual flow. If so, does it really mean anything when the computer tells you you are averaging 32 mpg going down the highway?

 

I'm still lacking an understanding of how the real-time fuel economy on the dash is calculated. Is it actually based on a fuel flow measurement or is it an estimate based on engine activity? I believe that the per-tank and the per-trip fuel economy can be calculated by measuring the fuel level in the tank but there's no way that fuel tank level can be used to tell you that you are getting 50 mpg going down a hill.

For real-time readings, you either have to know exactly how much fuel is being used or estimate it. Measurements of fuel economy like on Mythbusters use precise flowmeters and estimate fuel economy over something like 20 miles . Somehow, I don't think cars include precise flowmeters that can tell you what your actual mpg is over that 1 mile stretch so my guess is that is all estimated and not based on actual flow. If so, does it really mean anything when the computer tells you you are averaging 32 mpg going down the highway?

They measure fuel flow from the on time of the injectors.

 

I spoke too soon! I blew 40 mpg away by staying off of the freeway!

 

Yep, this thing is a efficient beast on city streets and country roads. I’m getting crazy good MPG!


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I have owned a 2020 Hybrid LE for about 3 weeks now, and I have around 450 miles driven on it. I have noticed that when being conservative with the gas and coasting as much as possible, I can get around 38 MPG more or less. Keep in mind that I do not usually let my gas tank drop below 1/2 way. If I do drive with more power and in sport mode, I have gotten around 32 MPG. And that’s still pretty good in my book.

Below is a photo I took after a drive on and off the highway of about 15-20 miles

 

Here's a photo of my info.

After about two weeks of 301.4 miles I'm averaging 43.2 miles. This was all done doing many individual trips all on secondary roads - would probably never come close to this on the interstates. After 300 miles I'm still showing a bit over half a tank but what I don't really understand is the 211 miles to empty. I believe I can go much farther that that if I continue with the same type of driving. When I filled up two weeks ago after the first half tank or so where I getting 40 mpg it only read less than 400 miles to empty (EDIT - number could have been more than 400 as I'm second guessing my memory now but still no 600) so there's some discrepancy there. The number just didn't go down as fast as I was putting on the miles so that's why I believe I'll get more than the 211 DTE listed if I continue to get the same mpg results. I know that RAV4 owners have a problem with filling the tank and not getting the range they expect but that's not what's going on here. When the tank is full the needle doesn't move off the "F" for over the first 100 miles whereas the RAV4 never reads full.

 

Looks about right for not being on an interstate. If you go above 70 mph, you will do well to average 32-33 mpg. But, in my experience, no SUV gets its EPA Highway rating. The needle not moving from full for the first 100 miles is almost to be expected on any car, especially if you fill it until gas is about to spill out.

 

I see the same behavior. The first 100 - 125 miles stay on full.

Also, the range I have got for most of my tanks is 480 miles. I agree that I should be able to go further than that though. Simple 36 mpg X 17 gal is 612 miles. I think the car is projecting a lower number for some reason.

Someone needs to test the “E” in this SUV for us


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Someone needs to test the “E” in this SUV for us

While I never like to go below half a tank, being a new vehicle, I was planning to let this tank go down until the low fuel light comes on to to make sure it works. A fill up then should be about 14.5 gallons.

 

I'll run mine until it says a few miles to empty and fill it up and report back with number of gallons until (1) pump shut off, and (2) it won't hold any more gas without spilling out. If I run out, I'll call AAA. Haha.

 

Thanks for taking one for hybrid owners out there. I’ll await your results.


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No problem. I absolutely hate filling up (big plus for hybrid), so I regularly cut it very close.

 

Have my new Platinum for few weeks now, but of course with the "stay at home" has only driven it a handful of times. Purchased under wrong assumption that I would be getting 35 mpg going for short trips to grocery store and back (2-4 one way). Instead I am finding I avg between 26 mpg and 30ish. Only when I start driving further does mpg start climbing. In reading posts, this seems standard. I am however still at/under 100 miles odo, so not sure if readings will improve or not. Main use will be short town trips (groceries and errands) and weekend/vacation road trips. Still prefer the idea of better mpg over power (v6), so just hope things improve.

 

If you're only doing short trips turn the heat off as it puts a draw on the hybrid system but really won't be able to give you any heat in such a short time. I do this and within half a mile - even when in the 40's - the EV light will come on. Use the heat for longer trips where you'll actually be able to get some benefit from the heat.

 

This is pretty standard. Takes 4-5 miles to warm up and get decent mpg. My Prius is the same way. My best MPG on the HL (49) was on a 29-mile trip where I didn't go over 55 mph.

 

Good idea! Probably helps to turn the AC off at first as well unless it's like 90 degrees.

 

It makes the biggest difference having the heater on for short trips, if it's cold enough outside to be asking for heat. With the heater on, the engine runs continuously until it is completely warmed up, or nearly so.

 

Depending on what the gas prices are where you live, your six mile round trips are costing you $0.41 each in fuel rather than the $0.31 you were expecting so I think you're good either way.

 

Ok, letting it get lower.

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Made my first commute to work in the HL Hybrid today. 28.5 miles one way, with 27 of that on the interstate, in light COVID traffic. Temp. was 52F. Got 36 mpg, which I am pleased with. MPG was much better on stretches where the speed limit was 45-55 than where it was 70. I might have been hypermiling some, but not obsessively. When I take it on a 900-mile high-speed trip next month, I'll be happy with 31 mpg.

 

I wonder just how accurately the computer measured less than a gallon of gas to calculate the 36 mpg for the trip. Is the flow meters that accurate? The tank level measurements surely can’t be. It all makes me think that the computer is estimating fuel economy based on engine parameters. Your 900 mile trip should be much more telling based on the actual fill-up volumes.

 

I wonder just how accurately the computer measured less than a gallon of gas to calculate the 36 mpg for the trip. Is the flow meters that accurate?

I thought that the computer measures the fuel usage by the duration/volume that is used by the fuel injectors. I believe the injectors vary the amount of fuel by the duration - although probably only measured in fractions of a second - that it spays fuel into the engine. It would seem with today's emission/fuel standards that it would be a very precisely measured amount and by tracking this amount over a given period of time - weather it just be a second or maybe even less - that it could be extrapolated into a usable mpg figure.

 

43.6 average for 560 miles

 

That's very impressive. Theoretically, you should be able to get 745 miles out of a full tank. I'd go ahead and pull over after 700 miles, though, just to be on the safe side.