[Bluegrass]

Just filled up after 385 miles of mostly rural highway driving in cold weather.
Hand calculated fuel economy was 43.7 MPG vs the trip meter's 45.5 MPG.

 

[MISTAIRJOE]

Oops, Maybe the Costco Regular is only 87 R+M/2. Still the reg vs. premium question holds. Premium any better for fuel economy?

I have around 950 miles on my Touring, Initially it was filled with regular gas but then I switched to premium. No difference in mileage and I have yet to see 41 plus miles per gallon. Live in Michigan and all most all city driving on flat land. I am pissed because the selling point of the car was the close to 50 MPG

 

[MISTAIRJOE]

I have had my '25 Civic Hybrid Sports Touring Hatch for around ~2000 miles, since late October. I drive smoothly and mostly stay in 'Normal' drive mode. Driving so far has been with 25f-50f outside temperature and climate controls set to Auto at 73f-75f. Overall average so far is around 41mpg.

Most of my driving is commuting to/from work, 70% highway with ACC set to 74mph most of the time and 30% off highway on mostly 55mph roads with a few traffic lights mixed in. Car is garaged before trip to work and sits outside at work in 25-50f temp before drive home. I get around ~37-39mpg most of the time for the commuting travel depending on temperatures and driving conditions. I have not found a big difference in mpg between garage temp and outside temp when starting car from 'cold', but I do usually get better mpg if the engine is already/close to temp from a previous trip.

On a recent road trip with outside temps of 30f-43f and 90% highway driving I got ~39mpg over 550 miles.

So far I have found it pretty much impossible to get over 40mpg for steady state highway driving, at least in these kinds of temperatures. It is a little frustrating that when cruising on the highway the system seems to continuously charge battery to about ~50% and then run on EV mode until ~25% (all of about 10 seconds when going highway speed on flat) which seems to make negligible difference to mpg, yet uses many partial charge/discharge cycles, which surely cant be all that good for the life of the battery?

City driving it does much better and getting 45-50+mpg is common/easy. Highest single trip average I have seen was 65mpg for an 8 mile journey where I probably never got over 45mph and it included multiple traffic lights, it was around 45f outside, but the engine was already warm from previous driving.

I will be interested to see after winter when temps warm up, if the mpg improves, or how the AC in summer temps will affect mpg, but I think the highway mpg is likely to stay similar.

Overall I am between meh and happy with the mpg, as i think the 50mpg city rating is certainly achievable, but I do wish it got closer to the highway rating of 45mpg. With the driving I have done so far, I don't think 45mpg will ever be achievable for steady state highway driving over 65mpg.

My impression of the car overall though is great. Comfortable, stylish, great usable interior, rides well, handles well, roomy.

Highly unlikely on a regular basis. i have yet to see 41 mpg using premium on flat land and mostly city driving.

 

[MISTAIRJOE]

900 miles so far on the car. I have only seen 41 mpg so far in mostly city driving even with premium but love the car. Been a Subaru owner up till now. So far I am happy with my choice. Will see what summer weather brings.

 

[AutoEngineer]

900 miles so far on the car. I have only seen 41 mpg so far in mostly city driving even with premium but love the car. Been a Subaru owner up till now. So far I am happy with my choice. Will see what summer weather brings.

FYI Premium provides no additional benefit in these cars. Spark tables are calibrated on 87. Cars that benefit from premium will state “premium recommended” and will have a higher octane spark table to take advantage of that additional octane and drop to a lower spark table when on 87. Trying to save you a small amount of money.

I too am looking forward to what these will do in the summer

 

[HondaEh]

I am pissed because the selling point of the car was the close to 50 MPG

I guess you are double pissed:

• 'Bad' fuel economy in winter
• Money wasted on premium gas

BTW, WHY 'medium' gas is still at pumps? Which car(s) use medium???

 

[NJHMD]

After 600 miles and 3 gas tank fill ups my brand new Civic hybrid hatchback only averages 25 mpg and that is with slow in city driving. I think I have a lemon. Also it has locked me out of the car computer and the Honda people can't seem to help fix that. I think the lemon laws allow me to return if is within 3 months. Or are all of these cars that bad?

 

[1000FC]

After 600 miles and 3 gas tank fill ups my brand new Civic hybrid hatchback only averages 25 mpg and that is with slow in city driving. I think I have a lemon. Also it has locked me out of the car computer and the Honda people can't seem to help fix that. I think the lemon laws allow me to return if is within 3 months. Or are all of these cars that bad?

just read the threads and come to the conclusion yourself if the car seems like a lemon or not. If you think it does, look up the lemon laws in your state and/or contact an attorney. you likely don't have a lemon, and if you do, you'd probably need to contact honda itself, not the dealer.

 

[alokpuri]

I am getting 46 mpg avg and that’s being really careful with the throttle and no harsh accels and braking. Here is what needs to be done.

• accelerate quickly past the speed limit. Than cruise down to speed limit. This will engage EV mode quite often.
• cruising down in speed and balancing the accelerometer carefully engaged EV mode.

It has been very cold here. My truck has lost about 2 mpg in this weather. Once we get past the Cold weather, the mpg should increase.

I only have 720 miles on the vehicle. Once it hits 2,000 miles, I expect my Covic to increase the mpg.

 

[skyliner]

We have the '25 Civic Hybrid Sports Touring version and live on the Monterey Peninsula in CA. We have quite a few hills in this area, which range from sea level to about 700 feet in just a few mile radius and goes up to as high as about 1300 feet within say a 12 mile radius. We do not live in the flatlands like azgman9 nor is the temperature quite as mild.

After about 2500 miles of use and recording all the fuel usage and doing the simple arithmetic to arrive at our fuel economy we have data and can draw some conclusions. And some other observations as the weather has gotten a little colder on cold starts and warm up times longer...these affect the ability of the car to engage the EV mode.

Here are the conclusions:

1. Cold morning starts [that's like maybe 42-45F] immediately engages the gas motor and will
remain on for about 8-10 minutes. This is case even going downhill or in the flatter areas and with
the EV battery at full or near full levels from start. Hurts fuels economy badly...say in low 30s MPG for
this start-up period. The car's interior does get comfortable pretty quickly, so heater set at 72. No seat heaters being used, BTW.

2. Never have had better than about 46MPG and that was starting in Yosemite at about 7000 feet and
driving back home, lots of downhill and with some headwinds, about 200+ miles.

3. Forget about getting even 40MPG on the flatlands if going much over 70MPG [Not talking about
much over and no, not 85MPH].

4. Best model for fuel economy is back roads going 60MPH and under. Even going up to elevations
of ~2500 feet and back down again, can and have gotten 43+ MPG for such a stretch.

5. The calculated fuel economy is very close to the car's indicated economy....like actual is maybe
1 MPG lower than indicated [not bad].

6. Yes, I've checked the tire pressures using digital gauges [factory settings 35 Front/33Rear].

7. My expectations are set for never getting [under our regular use style] anything over about 40-42 MPG, short of long trips at elevation on 55-60 MPH roads or some test protocol driving style.

8. So, I have no doubt that going particularly middle speeds [50-60 or so MPH] in the flatlands, some of these cars might get the MFG's rated fuel consumption, but that isn't the case with our use and location.
Our 2010 VW TDI Jetta did better than this by a few MPG. Road trips at 70+ would yield 45-50 MPG,
again, short of horrific headwinds.

Other than slightly disappointing fuel economy, this Civic is a very wonderful car overall.

I've also noticed the gas engine immediately engaging on the cold mornings. BUT, if you turn the climate control fan off, the engine goes with it! Same the other direction, if the engine isn't warm but car is in EV mode, fan on => engine on. (I don't use auto climate control) By leaving the climate control fan OFF until I know the engine has warmed up, I get a roughly 1.5-3mpg boost. I've also made it a habit to turn the fan off before turning the car off so it's primed to start with EV mode on my next trip -- very satisfying to get out of the neighborhood on the electric only, and maybe save a few engine start-stop cycles over the vehicle life.

At 1000mi odometer I'm about 45mpg lifetime average on the meter in cool/cold, hilly greater Denver, before discovering this "feature" earlier this week. Closer to 47mpg indicated these past few days driving my usual commute route. All on regular grade E10 winter blend pump gas, Normal drive mode, and using the driver's seat heater on "2 dots" continuously.

 

[NJHMD]

I've also noticed the gas engine immediately engaging on the cold mornings. BUT, if you turn the climate control fan off, the engine goes with it! Same the other direction, if the engine isn't warm but car is in EV mode, fan on => engine on. (I don't use auto climate control) By leaving the climate control fan OFF until I know the engine has warmed up, I get a roughly 1.5-3mpg boost. I've also made it a habit to turn the fan off before turning the car off so it's primed to start with EV mode on my next trip -- very satisfying to get out of the neighborhood on the electric only, and maybe save a few engine start-stop cycles over the vehicle life.

At 1000mi odometer I'm about 45mpg lifetime average on the meter in cool/cold, hilly greater Denver, before discovering this "feature" earlier this week. Closer to 47mpg indicated these past few days driving my usual commute route. All on regular grade E10 winter blend pump gas, Normal drive mode, and using the driver's seat heater on "2 dots" continuously.

I'll try your suggestions. I'm in Oregon but it has been cold (26 degrees in the morning) so I've had the heat up to max and the fan too. I'll leave those off initially to see if that helps but keep the seat warmer on at 2 dots. Hoping for warmer days soon!
Thank you
NH

 

[HaulinAuss]

I have a 2025 civic sport touring hybrid that I purchased on 11/19 (just shy of two weeks ago). Since then I am already going to have to fill up a second time.

it says my average fuel is 44.4mpg but I have only driven 350 miles on the second full tank.

I have also noticed it sometimes takes quite awhile for ev to kick in even in instances when i have full charge and drive steady at 55mph.

i live in California, do mostly city driving with two trips on the highway at 75mph top speed for only 60 miles round trip. I also have been very conscious of my foot, making a concerted effort to drive steady and brake even.

I can clearly tell the readings are off but even if they were accurate id be averaging well under 40mpg which is no better than my 2007 corolla.

just need to know if im overly concerned and if possible, any explanation why filling up a few times increases mileage.

this is mt first new car and first hybrid so i am very inexperienced.

Someone may have already mentioned this.... Are you certain you could completely filled the tank the first time? The MPG displayed is typically fairly accurate. And, you can't calculate your mpg without filling your tank and then, after driving xxx miles fill it up again and note the number of gallons to needed for another full tank. Miles to the low fuel notice is almost meaningless

 

[HondaEh]

1. By leaving the climate control fan OFF until I know the engine has warmed up, I get a roughly 1.5-3mpg boost.

2. and maybe save a few engine start-stop cycles over the vehicle life.

1. Even with my current pure ICE car I do the same. Let engine reaches running temp and then engage heating. It takes just 2km or about 5 minutes.
2. Why would that matter for hybrid? Engine is started by electric motor powered by high voltage battery not your 12v battery.

 

[NJHMD]

I've only gone 550 miles in my new highly recommended 2025 honda civic hybrid touring hatchback but still only getting 25 mpg. I bought for extremely high price of $37,000 due to dealer gouging and now they say too bad even though the onboard computer doesn't work either.

 

[HaulinAuss]

900 miles so far on the car. I have only seen 41 mpg so far in mostly city driving even with premium but love the car. Been a Subaru owner up till now. So far I am happy with my choice. Will see what summer weather brings.

Ditto. Higher octane gas is of no benefit when not recommended by the manufacturer.

 

[rokonman]

I've only gone 550 miles in my new highly recommended 2025 honda civic hybrid touring hatchback but still only getting 25 mpg. I bought for extremely high price of $37,000 due to dealer gouging and now they say too bad even though the onboard computer doesn't work either.

Paying over list is a choice made by the buyer. The cure for gouging is very simple, just say no thanks and head for the door. Dealers only have the upper hand when you give it to them. If the fools are lined up to pay over list, just wait a month. Today’s hot commodity becomes stale very quickly. The new Hummer is a great example, from lines of customers to lines of unsold product sitting on the lot took a few short months.

 

[donvnielsen]

Did 200 miles in frigid temps {-7 and above} and a good headwind at 72mph for the most part. Did about 28.5 mpg over the 3hrs. It feels low for a 4 cyl over that distance. Lifetime mpg is 38 at 2300+ miles

 

[HaulinAuss]

Yep, 28.5 mpg kinda sucks, but not surprising given the conditions. Headwinds can be a killer on mpg. A few days ago, on our 100 mile trip home from the dealer, we got around 42 mpg, averaging around 70 mph, 50 degrees, and with a significant crosswind.

 

[CivicAF]

Very low 20's here, but I'm pretty sure he's not even trying... he is smiling 😃 though...

 

[farmerjack]

I've been tracking my fuel economy at the tank with fuelly for the last few months. In the Atlanta area it's been rather cold for the last few weeks (sub-freezing), so I've seen a significant dip in fuel economy on my commute. I commute exclusively on the highway at 70-75mph which does NOT help fuel economy in the slightest.