Hi all, I just purchased a new 500h and am finding my mileage is coming in at a disappointing 18-19 MPG. I’ve only put 100 miles on the car so maybe there’s a break in period for the hybrid system? Has anyone else had a similar experience? I’ve been driving in eco mode and have been really light on the gas pedal.

 

you’re going to need 4-5 full tanks before you get a true average. 100 miles in on any car isn’t going to be accurate.

 

ECU will need more than 100 miles to calibrate your driving

 

I’d love to hear where everyone else’s MPG has been coming in on their 500h. I drive very conservatively.

 

Came here to ask the same thing. We're over 700 miles in and have the same issue. Should have calibrated by now.

Also are you finding the gas tank seems smaller than advertised? When I'm on E it only fills up about 13 gallons.

 

filled up 14 times and haven’t been able to get more then 13 gallons as well. I filled up with single digits miles left. Also Avg mpg around 22. This is my 5th hybrid so I am familiar with how to modulate the pedal to get better mileage. This is really disappointing.

 

22-23 MPG with normal, mixed driving seems to be realistic for the 500h. It’s nowhere near 27 after 5K miles.

 

My assumption is it has a sizable reserve just like every other Toyota/Lexus. Our LX 570 with 0 miles left has 4 gallons left. My Tundra when the gas light comes on, has 8 gallons left. May sound crazy but if you want to find the real range, you have to keep driving past 0 miles then fill up and pay attention to the gallons you pumped. I reset trip A every fill up then I always reset trip B whenever the gas light comes on or at 0 miles to empty so I can gauge how much reserve I have left.

Someone will chime in and say don’t let your gas get low so to keep your fuel pump cool but I have a 227k Toyota I’ve done this on and never touched its fuel pump. I even intentionally ran out to test its reserve limit although I had gas with me. When you get to the reserve portion be mindful of driving habits to somewhat gauge how much further you can go. Example if I’m driving a 15mpg vehicle and I know in my mind I have 4 gallons left, I will comfortably drive another 35-40 miles maybe less if it’s a lot of stop and go before I refuel if I’m trying to stretch it out.

In short the DTE is very conservative. If you try this, report back so others can learn. Aside from a couple trial and error, that’s how I learned on other vehicles I have.

 

I have a '21 RX450h (V6 not 4 cyl), 50K miles (bought new), it's rated 30/28/31 mpg, and I never got more than 25 mpg... I don't drive that fast either, probably 1/2 city and 1/2 highway, not in either Sport mode, always doing all the required maintenance and using 93 premium gas, even though I had been using Costco gas (which I just realized it's up to 10% ethanol and some people have said that this will decrease your mpg, as well as put more wear and tear on the engine) but recently changed to Shell 93 (supposedly the best mix) but no real mpg improvements... I've heard the same complaint regarding stated mpg and actual mpg from many others... I think the stated mpg estimates are inflated...

As to the gas tank, the stated capacity for my model is 17.2 gal, I've rolled into gas stations with 0 miles left and never hit the 15 gal fill mark, so I think the above estimates of having a couple of gallons left even when the range is showing 0 miles is accurate.

 

We used to have a ‘19 RX450H F sport and before leaving the dealership I reset the mpg. After 47k it read 27mpg. My wife has a bit of a heavy foot and does a lot of idling but I could easily get 30-35/36mpg in it. Clearly we have different driving styles. When I see a red light, I lift and coast. And I routinely used the EV button. I don’t think she ever touched it and drove in sport mode. Always ran 93 octane with 10% ethanol.

And I concur so DTE is not accurate.

 

My goodness, my GTR has better mileage than my 500h, the most I got is 17.4 mpg. Will it get better?

 

it definitely should. i saw around 22 within the first 500 miles on my TX 350. make sure the tire pressure is set correctly. mine was low by about 4 psi on delivery. are you using premium fuel?

 

My TX 500h has 7,000 miles on it now and I’ve already taken it in for the 5,000 service with Lexus. I mentioned the mpg but they said it should get better. It is currently at 17.8 we drive on eco mode and regular mode
its frustrating I just got went to Lexus after dealing with 3 Chevy Tahoes that eventually ended up being lemon lawed. I just don’t even want to go through this with Lexus. That’s why I made the switch!

 

We're seeing about ~24 mpg with mostly city driving.

 

i totally agree i had the nx hybrid and was at 27.5 which was a little low to marketing but only by .5 mpg. I am getting 368 to a full tank its saying 24/25 mpg on the gauge yet the calculation to the 17.2 gallon tank is more like 20.4 im calling immediately to thw corporate office