I'm only getting 34mpg on my first tank. But it's freezing in Wisconsin and I've been in sport mode half the time.

 

MPG update as it the temps have started dropping in CT.
2,837 total miles
lifetime mpg: 45.88
last fuel tank mpg: 41.43
lowest fuel tank mpg: 41.43
highest fuel tank mpg: 48.14 in middle of October (first time I personally filled up the tank, and it was unseasonably warm)
mean fuel tank mpg: 46.69

The US EPA only looks at about 200-250 cars a year.... I'm starting to wonder if they tested this car, or if the numbers are just estimates based on hondas own internal math.

 

The fuel consumption is quite low in the first few thousand miles, it takes time to break in.

 

Source on this for hybrids?

 

One thing I have noticed, is that when I run the heater the ICE wants to run more and it seems to not want to kick into EV mode. I rarely use the heat due to my warm weather area, so I do notice this on some cold morning drives. This is just me and I'm not claiming it affects my mileage much, since I am one of the high mileage people that are in disbelief over numbers in the 30s. Most of my tanks are in the high 50s with 90% city. The only time I got a high 30 mpg tank what traveling from Texas to LA. All highway, high speed, and some mountains were factors on that tank. I've read that "winter blend" ethanol gas affect mileage too...

 

From my assessment, the engine running more in cold weather, and especially using remote start more often seems to be my issue. I’m just under 30mpg, but also only have 150 miles on it. I am not going to sweat it, I don’t believe anything is wrong. I am just using it differently than the methods used to rate the mpg. (i.e. remote start, drive 4 miles, shut off, remote start, drive 4 more miles home, shut off)

 

If people are simply posting the current average since last fill-up or reset I would say you need to use the Trip B average and don't reset it. My Trip A meter auto-resets at each fill-up and I can make it home from the station in EV mode so it's gong to read 199.9 mpg but if I put it in Sport mode and rip around the block twice it will instantly drop into the 30's. By the time the tank is ready to refill it will have settled into a more accurate assessment but can still vary from tank to tank depending on the type of driving done. You can also quickly look at the Trip total, fill up and do a manual calculation. I've found those to be pretty close to the computer's estimates.

My Trip B average is currently at 48.8 with 6240 miles total.

 

If people are simply posting the current average since last fill-up or reset I would say you need to use the Trip B average and don't reset it. My Trip A meter auto-resets at each fill-up and I can make it home from the station in EV mode so it's gong to read 199.9 mpg but if I put it in Sport mode and rip around the block twice it will instantly drop into the 30's. By the time the tank is ready to refill it will have settled into a more accurate assessment but can still vary from tank to tank depending on the type of driving done. You can also quickly look at the Trip total, fill up and do a manual calculation. I've found those to be pretty close to the computer's estimates.

My Trip B average is currently at 48.8 with 6240 miles total.

Agreed. in my opinion it should either be your current total mpg lifetime, or your most recent fill up. So trip A reset when you fill up, next time you go get gas, look at the mpg of trip A, thats your mpg from the last tank

i'll start paying closer attention to what the car reports vs the actual calculate mpg is, but I think its been pretty accurate so far


I think you and I have pretty similar lifetime mpg despite you having double my my miles. you're 3mpg over me, but if I recall correctly you haven't gotten cold weather yet? so maybe temp change has been the biggest factor thus far

 

I'm driving only in eco mode. Basically all in town driving and my car is getting crap mileage. 2025 Honda civic sport hybrid touring and averages 31.6 mpg. Crap and I'm up to 1200 miles on the car. Plus I have noticed my sensors for rear passengers aren't working. Almost was rear ended due to an overhead bridge with a dip underneath that made my car slam on the brakes because it thought we were going to hit the overhead bridge??? So far not feeling I made the correct choice with this purchase.

Forgot to mention my car NEVER KICKS INTO EV MODE!!! Unless I take my foot off the gas but that's any f.ing car!

 

I have the same 2025 hybrid hatch. Current total miles are 1900 miles. I did my first oil change at 1000 miles. results so far, Getting consistent mpg of 49-52 mix of city and highway. I noticed no difference between econ and normal modes. I believe it is all about driving habits. * drive the speed limit. * in city driving get to your speed limit quickly not going over 25% power. You will get into electric mode more often once you fet to cruising speed faster. * i always use cruise control to keep an even pedal %. Any fast moves will kick on the engine. * expect the engine to turn on with any elevation increases. The slightest slope will kick in the engine on cruise control at 45. * utilize the regenerative breaking by using the left streering wheel paddle. I think most ppl don’t know about this. Always break with this first and apply break pedal for final stop. This will ensure you are charging the maximum preventing unnecessary engine starts to charge the engine i am now testing on sport mode. We will see how the results are. i did notice when i calculated my mpg by hand there was quite a discrepancy with the displayed mpg. Trip A was 52.3 while my calculated mgp was 47.3. I would expect it to be a bit more accurate. Just fyi.

 

Oh boy I don't think you're supposed to swap your first engine oil so quick like that. That's one of the most important ones to keep running with the additives

 

My mileage went up after about 1k. I find that if I am driving on the freeway (not stop and go) my mileage is about what you are getting. If I drive in stop and go traffic (Streets or Freeway) then I get about 48 MPG

 

I have 500 miles on my new 2025 honda civic hybrid sport touring. I drive mainly highway. I do drive 7 to 8 miles over the speed limit on cruise control. I don’t drive aggressively and there is some hills, but I’m only getting 38 miles per gallon instead of 48 miles per gallon.
So not sure if the 7 or 8 miles over the speed limit would reduce the mpg by 10. That’s a little far fetched. If so they should state that in there mpg add. Please give me better news than what I’m seeing so far on my dash? Thanks

 

I have 500 miles on my new 2025 honda civic hybrid sport touring. I drive mainly highway. For 120 miles a day. I do drive 7 to 8 miles over the 65 mph speed limit on cruise control. I don’t drive aggressively and there is some hills, but I’m only getting 38 miles per gallon instead of 48 miles per gallon.
So not sure if the 7 or 8 miles over the speed limit would reduce the mpg by 10. That’s a little far fetched. If so they should state that in there mpg add. Please give me better news than what I’m seeing so far on my dash? Thanks

 

Hmmm... 7 to 8 over 55? 65? 75? I drive 5-10 over all the time and I'm averaging over 51 MPG... but I'm generally doing between 30-50MPH. Regardless, give it some time. You're mileage, as it has for others here, will most likely improve as things wear in (and the temps increase).

 

I agree to wait a bit Tailwagger but 7 over 75 part time cannot be compared or is relevant to 7 over 50 part time.

 

500 miles so you’re probably on your second tank of gas. I felt the mpg improved on my 3rd or so tank. The computer could still be adjusting to running for the first time. IME I average 53 per Honda but 47 when I manually calculate at the pump. I recommend you check that.

However, about driving style, anytime you hear the engine turn on you should think if there’s anything you can do to go back to electric (slow down, ease up on the pedal, turn off ac or fan, turn off heated seats, eco/normal/sport mode. If there are any hills at all, your engine will turn on. If it’s < 70f outside your battery is less efficient. The battery is tiny and will work on flat ground at a constant speed.

The Honda mpg ratings are based on people who are hyper mileing. That’s nearly the best you’ll get. Only perfect situations (weather, flat, speed limit, distance between stops, is where you’ll be able to hit and exceed their ratings.

I’m getting 53.5 with these conditions:
55-75f weather
No hills
Eco mode
No ac or fan
Cruise control, even at 35.
Using left steering wheel paddle for regen braking before I actually use the brakes
Drive the speed limit (yes it makes a difference 43 vs 35 is a 23% increase in speed. The wind drag increases with increased speed (2x the speed, 4x the drag). So it's a big deal.

For me, it's a game and I do everything I can to achieve a higher MPG without drastically decreasing drivablity.

For your driving conditions, mostly freeway and over the speed limit, I would expect 40-45 MPG if you're over the speed limit. Always use cruise control. Turn it off as you approach traffic. As traffic opens up don't rely on cruise control to get back up to speed it will kick in too hard. If you're not using cruise control. Another suggestion is to get up to speed as fast as possible when entering the freeway. I let the power get just over 25% for acceleration. The faster you get to cruising speed the faster you will use the battery.

Good luck!

 

You don't seem to understand that, on the highway at over 60 mph, you are NOT driving a Hybrid.

You are driving a conventional gas engine with a single gear drivetrain.

The faster over 60 mph you drive, the lower your mpg.

If you are going 7 over the limit (70 to 80?) you are LUCKY to be getting 38 mpg. You should be THANKING Honda.

The estimated mpg provided by Honda are for a typical MIX of highway and city driving.

 

There are three modes:

Full EV - wheels driven electrically with power from battery, ICE off. This can happen at any time below 82 mph

ICE coupled - The engine is mechanically coupled to the drive wheels in a fixed overdrive ratio. This can happen at any time between 42-82 mph if determined by the computer to be the most efficient mode. Otherwise the computer may choose either EV or Hybrid mode.

Hybrid - ICE is running and the generated electrical power is used to drive the wheels and charge the battery. This can occur at any speed but above 82 mph it is the only mode available. So if you drive 85 mph yes, the engine is running full time and the reason is because that is the most efficient mode for that situation but it is not directly coupled to the wheels.

 

Reasonable response but the mpg is also indicated for strictly highway. The test is not at real world speeds for most interstates. Everyone is 7-9 over. At 10 it’s reckless driving if caught in Virginia.

 

My sport touring hybrid will go into full EV mode above 70. Just pulled in from a 300 mile all highway trip which averaged 45 mpg. Most of the time I was driving with traffic 65-70 with the occasional burst to 75. I have just over 2K on the clock.

 

I can also confirm that my hybrid Civic regularly goes into EV mode at speeds upward of 75 MPH.

 

Regular/Normal

 

At legal highway speeds, while cruising (i.e., not hard acceleration or steep hills), the engine will drive the wheels directly, and the engine speed will be tied to vehicle speed. Under those conditions, the engine will always be generating more power than the wheels require, so it will also be charging the battery. When the battery reaches an upper set point (which is a different percentage depending on driving mode), the engine switches off and you enter full EV until the battery reaches a lower set point (also mode dependent), and the cycle starts again.

Previous versions of this system (earlier Accords, European Civics) had a problem at high speeds ( > 70, maybe?) that the engine lost efficiency at the corresponding rev/load combination, and it was more efficient then to decouple the wheels and run as a hybrid. This generation has extended the efficiency of the engine itself to a higher rev range, so if there's an upper engine drive speed, it's at least higher.

However, you'll still drop into HV if you increase the load (hard acceleration, climbing a hill, etc) regardless of speed, because the engine just isn't very powerful at the engine drive rev range.

 

...However, you'll still drop into HV if you increase the load (hard acceleration, climbing a hill, etc) regardless of speed, because the engine just isn't very powerful at the engine drive rev range.

Correct, the direct coupled mode is an overdrive ratio so just like any normal car if you require acceleration or load beyond a certain level it will downshift, or in this case revert to hybrid mode. If you watch the power flow diagram on either the infotainment screen or gauge cluster you will see a tiny gear-like symbol appear when the engine is directly coupled. It is determined by the computer when it is advantageous to do so.

 

temps increasing, mpg increasing as well

9,372 miles
last tank mpg 49
lifetime avg 40.833

 

Yeah with temps up I'm averaging 56mpg a tank now, with 47 lifetime including Canadian winter

 

2025 civic hybrid sport touring hatchback.
Urban Grey Pearl. Halifax NS
I have 11,000 kms after 6 months - a trip to NL - first oil change next week ( a little later than I had planed ) with wheel rotation. I'm very happy with mileage - same as yours 56 - 58 mpg.
LTM

 

hi I purchased my 2025 civic hybrid sport hatchback touring in March., currently on a trip from Halifax Nova Scotia Canada to Newfoundland Can. So far have put close to 2000 km on the vehicle. I am recording my mileage and gas consumption- so far it appears to be doing well…average 4.8 litres per 100 km. I‘m pleased with that.
Things im not so happy with is (1) the cabin road noise… i expected better. (2) No spare tire - so I prepared and purchased a spare wheel and tire - hard to get, which is stored behind the driver seat. The goop / slime with an air pump is just silly. (3) no jack or wheel wrench is ???. (4) a few other irritating issues. I know it’s a good vehicle but………
Happy travels
LTM

 

Thanks for your feedback on the road noise. I've been asking about this on the forum and not many responses either pro or con. To me, that is a bigger issue than lack of spare tire, which is annoying but more obvious.

 

Lack of a spare tire is a lot more of a concern depending on where you live and drive. You won't realize that until you get a flat at the worse time, in the wrong place, in lousy weather. Not down playing the road noise issue- I am very very disappointed with the road noise infiltration into the cabin - I have a 2025 civic touring hybrid sport hatchback. With the Bose 12 speaker audio. Might as well have a transistor radio. Trying to be positive but.

 

For me the driving style makes all the difference. Very slow acceleration out of stops can make a huge difference. I'm consistently getting around 45 mpg in city and some days more and I'm running AC continuously.

 

I'm not Grandpa im only 70!

 

There's alot of factors that contribute to mpg. Top three is weather temperarure, driving habit, and tire pressure/wheel alignment. If you drive it with the ICE always on (maintenance mode) expect 28-32mpg. In normal conditions 47-50mpg.

I'm a gearhead that does alot of WOT and spirited driving. Currently the fastest civic hybrid 14.4s and still get 50mpg.

 

Currently the fastest civic hybrid 14.4s

Is that an official NHRA record?

 

Out of curiosity, I did a test. 2023 Civic eHEV Advance (european hatchback hybrid).

Starting and finishing at the same highway rest area, going up and down a highway. 90% highway, 10% highway junctions. Doing 5 runs at different speeds on the same road circuit.

Fair weather, no wind, 16°C / 60°F outside air temperature, 20°C / 68°F road temperature, 45.5 km / 28.3 mile distance, 273m / 896 ft of elevation gain and loss. Road was empty, apart from junctions and start/stop I was travelling at cruise control speed.

cruise control [km/h]	average speed [km/h]	consumption [l/100km]	cruise control [mph]	average speed [mph]	consumption [mpg]	ICE mode	ICE RPM
80	76	3.6	50	47	65	cycling	1790
100	93	4.5	62	58	52	cycling	2250
120	108	5.6	75	67	42	cycling	2710
140	122	6.9	87	76	34	always on	3140
160	134	8.0	100	83	29	always on	3580