Maybe the computer is still learning your driving habits.

 

The engine also needs to break in a bit. I have just under 350 miles on mine and I am averaging about 18 - 18.5 right now around town. I expect that to go up once I hit 1000 miles give or take.

 

How do you know what your mileage is? Sounds like you are using the trip computer? If so the trip computer is not a reliable source for actual gas mileage or comparing gas mileage between two different vehicles, particularly your 2 GenII's since they are rather different in their drive trains. The GenII's computer has been shown to over estimate gas mileage by as much as 10%. That said, Honda has made MANY changes between your 6sp 2017 and your 2022 9sp. It may (or may not) be that the computer is less optimistic in the 2022. . .
If you want to know your actual gas mileage then the best approach is to hand calculate it and keep records over a large number of fill ups.
Basically, the trip computer can be useful to observe trends in your particular vehicles gas mileage. It is not a good way of comparing your 22's mileage to your 17s mileage.

 

How do you know what your mileage is? Sounds like you are using the trip computer? If so the trip computer is not a reliable source for actual gas mileage or comparing gas mileage between two different vehicles, particularly your 2 GenII's since they are rather different in their drive trains. The GenII's computer has been shown to over estimate gas mileage by as much as 10%. That said, Honda has made MANY changes between your 6sp 2017 and your 2022 9sp. It may (or may not) be that the computer is less optimistic in the 2022. . .
If you want to know your actual gas mileage then the best approach is to hand calculate it and keep records over a large number of fill ups.
Basically, the trip computer can be useful to observe trends in your particular vehicles gas mileage. It is not a good way of comparing your 22's mileage to your 17s mileage.

That's good to know because I have around 100 miles on my new 2021 RTL and it's constantly showing 14.8 to 14.9 mpg around town which seems pretty bad to me. I'm hoping there's something wrong with the computer.

 

I trust the car computer. Gas pumps are very inaccurate

 

Your gas pumps better be accurate! They should be calibrated on a consistent basis by the county to make sure stations aren't ripping people off. I think they are very accurate and wouldn't second guess my gas pump. I haven't found a car computer yet that estimated milage accurately...typically +/- 1-2 mpg is about average for most vehicles and typically on the + side to make you "feel" better about your driving.

 

around town with a lot of traffic lights going to work I have been getting 18.5 to 19mpg

 

Is your engine shutting off and on?

 

I guess I am lucky. I get 22 towing and up to 29 on interstate.
2020 Ridgeline

 

yes you are extrememly lucky, my 2019 Sport will never beat 19 and most of the time 18, when I drove Ford's we all called the fuel computer the lie meter, becaause it was oalways over estimating fuel mileage by 2mpg,

 

Mines FWD. I notice that FWD will get better MPG than AWD

 

Yes it will for obvious reasons

 

Gas pumps are not calibrated for temp differences.

I confirmed with other means not just by the computer

 

Fuel is stored underground so temperatures vary much less than outside ambient. Also the amount of expansion / contraction of the fuel is really small so it will have almost no practical effect on your calculations. Seriously, if you hand calculate over MANY fill ups you will have a very accurate reading of your vehicles mileage. What other methods are you using?

 

AWD uses more gas. thats why I didnt want it

 

I wish Honda would have kept the FWD for 2022
Maybe a hybrid soon?

 

I think we would see more electric than hybrid with the electric race taking place. The RL may be a great candidate for just that. We'll see...maybe 2024?

 

Gas vehicle's are at the end of there era so in a couple of years it wont matter.

 

And that will be a VERY SAD time 😢

 

Things change. Same problem we had at the turn of the century

 

I still miss my horse!

 

Just took the first highway trip, from PA to CT, old rig would get 31 mpg, just got 28 mpg on the 2022. I had assumed I would get at least the same mileage with the new 9 speed tranny.

Wow, I've never seen those kind of numbers.
Anyway, the 9 speeds are estimated to get better city and worse highway than the 6 speeds by about 1 mpg. Which doesn't seem like a good trade off to me, but that's what Honda decided to go with when they chose the new transmission. With that said, tour numbers are inline with that, taken into account all other variables. Temperature, newness, gas mixture, weight, bla bla bla...

Congrats on the new ride.

 

According to OM, E85 is fine.
Edit: Correction. E85 is not to be used in the RL.

 

Accotding to OM, E85 is fine.

‘From the 2022 RL owner’s manual.

 

I wish if someone who is driving a new Ridgeline and getting a bad gas mileage could swap the transmission back to a six speed so we can all prove that it's not the transmission and therefore stop blaming it on the nine speed. A better idea would be to turn off the brake stop engine kill feature and see if the mileage gets better or worse.

 

My 2017 typically got 26mpg highway on the computer, 24 calculated. That is 75mph. My 2021 says 24 on computer and 23 calculated. The 2021 computer doesn't overinflate as bad. Also My 2021 mpg was worse than above till the first oil change. I think you need some break in time and the switch from honda break in oil over to full synthetic. The 2021 I think is worse on aerodynamics but somehow feels more stable on the highway. Overall with my 33 percent city 66 percent highway I think it is really close to the same mpg averall.

 

I'm by no means a scientist, but wouldn't the density of the gas change, like everything else, from hot to cold? Everything I can think of expands and contracts as the temperature changes. That alone will give you different results based on season, unless not.

Then, I believe in the summer they throw in ethanol which has almost 30% less energy than gasoline, which translates into a few % less fuel economy, which I wonder if that negates the temperature fluctuations to some degree

Anyway, the point is there a lots of ever changing variables, which is why you need long term data, that is fairly consistent to be accurate.

Hell, I always wonder how much remote starting effects your numbers, 10 minutes of gas being burned going zero miles has to screw it all up.

 

Hell, I always wonder how much remote starting effects your numbers, 10 minutes of gas being burned going zero miles has to screw it all up.

Yes. Idling, by definition, is zero miles to the gallon.

 

I have a 21 Sport I bought new with 10 miles on it for 3 or 4 months now and have a little over 15,000 miles on it. I am getting a steady 23ish MPG on the highway and 15ish around town. The computer usually shows about 4 or 5 MPG better than what it actually does. I never pay attention to it anyway. I have a lead foot and am happy with the mileage on an all wheel drive truck that gives a great ride on the open road. Never expected great mileage but am happy with it. I actually got about 27 MPG when we were in the New Mexico and Colorado mountains. Never figured that one out, just know it happened. Had a 2004 Chevy Silverado that got 18 on the highway on a good day going downhill with the wind at my back. Maybe the mileage will go up some when you get more miles on the engine. Took 4 or 5 thousand for mine to get that MPG. Hope you still enjoy your ride overall.

 

I bought FWD only. I didn't want the MPG hit on AWD

 

I’m at 1,600 miles on my 2022. According to the truck I’m getting 22.5 MPG over those total miles. This on backroads and highway. Very little city or stop and go. I’m happy with those results.

I use 3 different gas stations. All are monitored and certified by the state. Wether my dash gauge is showing 17 or 24 MPG my driving habits will not change. Nor will I carry a book to manually monitor my MPG. Life’s too short.

Gusto!

 

Very little city or stop and go.

Unless you live in Portland, I think all your Maine driving would be classified as non-city.

 

Its just not wither the pumps are calibrated at the stations. The whole way the pumps work is flawed

 

I’m sorry you feel that way……

Is this part of the entire conspiracy plot? I can tell you’ll never change your mind. No matter what evidence comes your way.

Gusto!

 

My thoughts:

Traded in a 2019 for a 2022. At 1,500 miles I am getting 1-2 less miles per gallon so far.

I just changed the oil yesterday (I'm old school that way and did not reset the MM). As others have noted the new transmission gets better MPGs in city and worse on the highway. Another thing affecting my MPGS is winter. The engine does not warm up as fast. Winterised gasoline – again less gas mileage. My engine is not broken all the way in yet. I noticed a jump around 3-4,000 miles on my 2019 RL-T. While I don't have a wind tunnel in my backyard, I think the new front's more squared face can't be helping MPGs. Finally, the new transmission seems to make the truck feel peppier, which can't be good for MPGs.

 

Per the Honda Window Sticker.... Regular Gasoline 21 combined city/highway MPG 18 city 24 highway

I've got 6K miles on my '21 Black Edition AWD and pretty much always drive in ECO w/ AutoStart engaged... I've gotten pretty used to controlling the A/S when needed by modulating the pedal during stops. I've averaged 20MPG around town while trying to avoid busy traffic light laden roads and 24-25 on the interstate. Compared to the sticker and my 2011 Pilot FWD, I'm VERY happy with my MPG thus far. LOVE the truck!!!

 

2018 got 18 around town on computer but about 16 used fill up math, found gas that does not contain alcohol cost 10 percent more but gets 25 percent better mileage also math now equals computer about 20mpg

 

Well let

Let me offer you this explanation as a possibility also took an extremely long highway road trip where the computer indicated I was averaging 29 mpg … however the number of miles never was in line with that and reality was I was more like 24 mpg perhaps the 22 has got better programming and is just actually closer to the truth