You haven’t told us what mpg you’re getting

I will say the first few thousand miles I was getting pretty poor mpg with my 1.5t but now exceeding EPA by 10-20%. It takes time for things to break in

 

Or what type of driving you do

 

Note that the hybrid civic does not get much better mileage on the highway than the gas only Civic. If most of your driving is highway, you will not see much difference between your previous car and the hybrid.

 

I disagree if you keep speed at 65 mpg. I just traveled RT to Phoenix from Tucson AC all the way Cruise on 65mpg and average for trip was 54

 

Hybrids shine in city driving.

 

Not min3

 

I got about 39 miles per gallon on a full tank. I started with 7 miles on the car, and by the time it reached 342 miles, the tank was almost empty with maybe a gallon left.

 

39 doesn’t sound that far off for highway driving, as someone else said, hybrid really shines in the city.

 

Same boat as you right now. Chalking it up to it being the first tank in addition to the geography around here.

 

you need to drive it further. there are a number of threads about people freaking out while still on the first tank. that little computer has no idea what's going on until you fill it up once or twice. you should also measure it yourself because otherwise you don't know if you have a economy problem or a measurement problem.

 

My mpg has been consistent so far, 50/50 mix of highway and local roads.

 

I have 1500 miles on my 2025 Civic Sport Touring sedan. My last 2 tanks of fuel I averaged 53 mpg with 60% city driving. It is flat and warm here in Tucson.

 

Where and how do you drive? You driving heavy footed? Mostly highway? Flooring it from a stop? 39 isn’t too far off imo. Give it a few more tanks.

 

I have just under 5k miles on my touring sedan. Many highway miles, mountains, desert and dense urban traffic most in NORMAL mode with A/C on. I rarely use cruise control other than straight, level open highway. My Trip B computer has never been reset and reads 48.9 mpg. Trip A computer auto resets at each fill up and I regularly see 50+/- mpg. I have cross checked the results with manual calculations and found the computer to be accurate.

All that being said I did see my results improve over time. Whether that is from break-in or my driving habits and style I'm not sure. I think that if you watch the display that shows your estimated average over the bar that indicates your instantaneous mpg it will have a subtle, almost unconscious effect on how you drive the car and I don't mean like a jerk Prius hyper-miler. There just seems to be a method where, at any speed up to around 80, you can coax it into EV mode and keep it there for a length of time.

On a recent trip to Las Vegas and back I filled up at Lee Vining, which is at 6,700 feet elevation, and drove up to the 9,943 foot Tioga Pass at which point my meter read 20.8 mpg but after coming down to the San Francisco area which is near sea level the computer read 62 mpg. Total distance was 199 miles.

 

how do you get trip A to auto-reset on fill? I noticed mine hasn't on my first 3 fills and I would love that.

 

I drive 95% highway, I get 38-41 MPG with my 2023 Si. When I'm going for joy rides on weekends, around 30-35.

 

I'd agree about the break in period. I think I drove about 150 miles and went to fill up after the dealer as I could tell the first tank number did seem right as this was my third hybrid owned. Regardless, I run in ECON mode, do 90+% city driving, and get about 61 mpg on a tank. This tank at over 500 miles I'm averaging 62.1. With the 10.6 gallon tank I'll get over 600 miles to the tank.
Details: relatively flat terrain in Texas, desert climate, A/C on 50% of the time, I don't drive like a hypermiler or a grandpa, and I have the 2025 Civic Hybrid Sport Touring. I don't do the odometer vs fuel numbers from the pump, I'm giving you numbers from the Honda computer which is probably a little to my benefit. One thing I learned after my wife would consistently get better mpg than me in our 2023 HAH is that she is a more aggressive driver than I was. She would get pretty hard on the gas - as in accelerate on the Power Meter (the fake rpm gauge) at about 23% to 25% from all stop lights and stop signs. It was slightly more aggressive than me since I was "trying" to get a good mpg number and she could care less. So I started doing it....step on it to about the 25% mark...get up to your speed....say 40 or 45 mph....then run super low on the power meter to keep your speed consistent. Now in the HAH we get 49-51 mpg consistently and in the Civic Hybrid I can hit the 60 mpg with all of the city driving I do. It works for us, some of you should try this method and see if you get a couple mpg improvement. Good luck and let us know if you get better numbers (or not)!

Obviously, the highway is the mpg killer, especially at high speed. When we travel across Texas at 85mph on I-10 and go through the Hill Country we get 37 or 38 mpg to a tank.

 

I'd agree about the break in period. I think I drove about 150 miles and went to fill up after the dealer as I could tell the first tank number did seem right as this was my third hybrid owned. Regardless, I run in ECON mode, do 90+% city driving, and get about 61 mpg on a tank. This tank at over 500 miles I'm averaging 62.1. With the 10.6 gallon tank I'll get over 600 miles to the tank.
Details: relatively flat terrain in Texas, desert climate, A/C on 50% of the time, I don't drive like a hypermiler or a grandpa, and I have the 2025 Civic Hybrid Sport Touring. I don't do the odometer vs fuel numbers from the pump, I'm giving you numbers from the Honda computer which is probably a little to my benefit. One thing I learned after my wife would consistently get better mpg than me in our 2023 HAH is that she is a more aggressive driver than I was. She would get pretty hard on the gas - as in accelerate on the Power Meter (the fake rpm gauge) at about 23% to 25% from all stop lights and stop signs. It was slightly more aggressive than me since I was "trying" to get a good mpg number and she could care less. So I started doing it....step on it to about the 25% mark...get up to your speed....say 40 or 45 mph....then run super low on the power meter to keep your speed consistent. Now in the HAH we get 49-51 mpg consistently and in the Civic Hybrid I can hit the 60 mpg with all of the city driving I do. It works for us, some of you should try this method and see if you get a couple mpg improvement. Good luck and let us know if you get better numbers (or not)!

Obviously, the highway is the mpg killer, especially at high speed. When we travel across Texas at 85mph on I-10 and go through the Hill Country we get 37 or 38 mpg to a tank.

What I'd like to know is what the 2025 Civic ST Hybrid engine sounds like at that speed. It's probably almost fully on the ICE engine for that, right?

My recollection of how the 2020 CR-V Hybrid behaved at 75-80 MPH was that it killed the 2.0L 4-cylinder, it revved to over 4500 RPM to do that speed, and did not sound happy about it AT ALL.

I keep reading that the 2025 Civic is different, and great, but what does it do/how does it feel or sound like to push it to 80-85 MPH on the highway?

The 38-ish MPG at that speed would be just fine (obviously still better than even the 1.5T Civic would get), but that "goat being strangled" engine noise was a really strong deterrent, kept me going at 65-70 MPH tops just to stop hearing it using ACC with distance following to some car in front of me to keep my lead foot off the pedal, which maybe was part of its design. LOL. But really boring to drive that way!!

 

You guys are right. I did notice that the miles per gallon are lower on the freeway compared to the city, but I wasn’t expecting it to be this low. I drive over 70 on the freeway, and I use the carpool lane a lot while carrying passengers, so that might be why my MPG is lower. I was just bummed that I was only able to get around 340 to 370 miles on a full tank, which wasn’t great for me since I was hoping to get at least 500 miles, especially since it’s a hybrid.

But other than that, I think everyone here is right—people have mentioned the break-in period, which seems true from what I’ve read. Also, the way I drive likely affects it. I’m learning how to use the paddle shifters, and it’s helping me improve my miles per gallon because at first, I didn’t know what they were for. I thought they were just regular paddle shifters to increase or decrease speed since my salesperson never explained them. I never really knew what they were for.

 

damn, my Si gets about 490 on a full tank on the highway. sounds crazy but i did the math.

range says 409 but it only takes 10 gallons at fill-up with a 12 gallon capacity; 409/10=40.9. (40.9x2)+409=490.8 miles per 12 gallons. with city driving i tend to average 34-35 mpg. 34.5x12=414 miles per 12 gallons.

give it some time to break-in. my MPGs went up after the first oil change.

 

I learned something new watching this video explanation of the Honda hybrid system. The video is four years old and he is talking about the system with a 1.5 liter engine for the Honda Jazz (I think Japanese market) but it is the same exact system. What I learned is that the direct engine coupling occurs between the speeds of 80 to 120 kph (50-75 mph) and will do so on average 75% of the time. Over 120 kph (75 mph) the engine is not directly coupled and the system runs 100% of the time in hybrid mode. So even though the engine is running, it is not running at a high rpm as some have thought. It is only running the generator at the most efficient rpm to power the traction motor and charge the battery.

Honda eHEV hybrid system - how it works

 

Great video, but I suspect the >120kph thing is unique to that Jazz 1.5 engine where it can't deliver the efficiency with motor driving the wheels.

Everything I've seen on the civic hybrid says motor is almost always engaged at highway speeds.

I could be wrong though... someone should hook up their OBD and do a full drive on a North America highway. There was someone on this forum that did that, to demonstrate some of the lower speed modes including how engine braking still exists. But they were driving on Micky mouse country roads so you couldn't get the full picture.

 

The engine sizes, both ICE and electric are larger on the Civic so the speed ranges are different. I have seem my Civic in EV mode up to just under 80 mph but the system and how it operates is identical. Over 80 mph, while the engine is running, it is not coupled to the wheels and is in hybrid mode. You can observe this on the power flow synoptic display and an OBD display of tachometer would show no direct connection between wheel speed and rpm.

 

Everyone was right about the break-in period! My MPG has really improved. Since my last fill-up, I’m consistently getting 45–46 MPG average , which is a big jump from the high 30s I was getting at first. Really happy with this, especially since I’m not even driving slow on the freeway!

 

Glad to hear things improved 🙂 can rest easy now

 

I have a 2025 Civic Hybrid Sport Touring Sedan. I have had it a little over 2 weeks, and I have put a little over 350 miles on it; a combination of city and highway driving. The car says I have averaged 48.2 mpg. Very happy so far.

 

I thought I'd pitch in some info too. My first tank on the car, which is halfway done, is averaging 52mpg. Mix of city/highway.

Also not super reflective of realistic driving, but Toronto has something like 3rd worst traffic in the world, and the other day I took a 25km ride in stop and go highway traffic followed by downtown driving.

That drive measured 87mpg at the end of highway stop/go, and 67mpg at the end of the full trip! Low speed ACC + LKAS basically meant the car was driving itself.

The hybrid really thrives in city and traffic.

 

I thought I'd pitch in some info too. My first tank on the car, which is halfway done, is averaging 52mpg. Mix of city/highway.

Not super reflective of realistic driving, but Toronto is something like 3rd worst traffic in the world, and the other day I took a 25km ride in stop and go highway traffic followed by downtown driving.

That drive measured 87mpg at the end of highway stop/go, and 67mpg at the end of the full trip! Low speed ACC + LKAS basically meant the car was driving itself.

The hybrid really thrives in city and traffic.

That it does! I've found when I drive into Atlanta and crawl around i285, my fuel economy skyrockets from my typical 45-46mpg to 50-55mpg easily.

 

I get 48 mpg on my Touring. 580 miles on it.

 

I now have 5200 miles and the Trip B meter, which has never been reset, reads 48.9 mpg. This is over all types of driving excluding rain/snow or winter so I have not yet used the heated seats, cabin heat or even the wipers but A/C has always been on and probably 90% has been in NORMAL mode.

 

annalow86, I just bought a 2025 civic hybrid sport touring. Like you I'm exceedingly disappointed in the fuel mileage this Honda gets. I don't see how the he*l they can advertise the fuel mileage this is suppose to get, like 45mpg hiway, 50mpg city. Bought mine in El Paso TX and drove it home to Corpus Christi. It got about 33 mpg on the hiway coming back and with a 10 gal gas tank there's just no safety factor. Now we're driving around town it's up to 36mpg but I'd call that poor at best. I fear I've screwed myself by purchasing this at a dealership clear across the country so now I don't have a good relationship with my local Honda dealership. Love driving the car but fuel mileage is just flat embarrassing. Anyone asks me if I recommend a Honda hybrid and I'd tell em go elsewhere. They always say don't fall in love with a certain car but I was under the impression Honda had a great track record. Not sure where to go next but I'm starting to smell a class action suit. You're not the first one I've heard of who gets much less than the fuel mileage these are supposed to get.

 

I think you should've done a bit of research and own up to a poor purchase decision instead of blaming others. Why buy a hybrid in the first place if your main driving is highway? Did you even look into how EPA estimates are done for the highway number? Hint: there's a top speed that's not 90mph. 🙄

I also don't know what you consider town driving, but there's no way you're getting 36mpg in town when lots of people are reporting over 50mpg in the city. If you did 90% highway, 10% city, and read 36mpg, then you're not reading things correctly.

 

Not sure if this will help anyone, but this is the average fuel economy I've seen over the last 2000 miles & 45 days with my hybrid. I commute at 75mph on the interstate both ways, minimal traffic. Small trips around town on the weekend & occasional traffic commuting bring the fuel economy UP quite a bit, as expected running on EV mode.

 

Cold weather mix of driving in only averaging 35mpg which Honda service tells me is normal. I drive like a grandma

 

I have a 2025 Civic hybrid touring. I am getting 49 mpg. However, I live in FL.

 

I am actually in the same boat as you. Just bought my car last Friday. Already put 900 miles on it and my highway milage is tapped out at like 36-39mpg. I am starting to get PISSED. The better mpg was the whole reason I bought the car. I slowed down to 65 and tried to let the car go into "EV" mode as much as possible, but it still is only seeing mid to high 30s.

I got it to kreep up into the 40s with city driving, but it really seems to be struggling with efficiency on the highway. Its winter here: maybe that is playing into it? Perhaps a break in period like you mentioned?

 

I am actually in the same boat as you. Just bought my car last Friday. Already put 900 miles on it and my highway milage is tapped out at like 36-39mpg. I am starting to get PISSED. The better mpg was the whole reason I bought the car. I slowed down to 65 and tried to let the car go into "EV" mode as much as possible, but it still is only seeing mid to high 30s.

I got it to kreep up into the 40s with city driving, but it really seems to be struggling with efficiency on the highway. Its winter here: maybe that is playing into it? Perhaps a break in period like you mentioned?

The IC engine has to run to generate heat so that will definitely have a negative effect on fuel usage. My mileage also got quite a bit better once I had 1500 or so miles on the car.