2018 Honda Accord Sdn - Low mileage

My car is just getting 25 mpg for both city and highway when its supposed to get 30 mpg city and 38 highway. I have the 1.5 turbo engine. Is anyone else having a similar issue.

First, how are you calculating mpg? Calculator/pencil or just trusting the dash display? Poor mileage, especially in cold weather for the hybrid version, has been reported but not often. EPA figures are typically optimistic but your results are off by 17-34%. I’d be disappointed too, especially in highway driving.

Car display says I get a little over 25 and I’ve been estimating based on miles driven after I’ve filled up. I don’t have the hybrid. I bought the car based on the good mileage advertised for this Honda.

Then you really don’t know what you are getting . The dash readouts can be off but close. On the highway my readout is within a mile or 2 of the mpg. In city driving only it can be off by 5 mpg.

You need to fill up and drive on the highway at a reasonable speed for 50 miles at least then refill and check it the old fashioned way by dividing miles by gallons .

Actually your vehicle reading should say ( up to 30 city / up to 38 highway ) . Also check your tire pressure and don’t haul a lot of stuff with you.

Driving habits and driving conditions play a big role in gasoline mileage. If the tires are inflated to the proper pressure as indicated on the decal on the left door pillar and the thermostat is allowing the engine to come up to operating temperature, then it’s driving habits, road conditions and the weather.
I notice quite a difference in around town driving from winter months to summer months. When my son drove our van as a teenager, he was the mileage champ.with that vehicle. He has a calm demeanor and it is reflected in his driving.

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I suspect that you are viewing the long term average, try resetting the reading on occasion and you will see some fluctuation that may influence your driving style for mileage improvement.

Good point Nevada . This person may not reset all the readouts which I do every fill up. If they reset then they might become aware of how different trips and traffic effects miles per gallon.

My dad has a year newer CRV with the same engine and gets 31 on his mixed loop compared to maybe 24 on the exact same loop with his 2007 CRV, EPA has the 2919 as 29 combined so he’s getting the mileage he expected.

Fuelly for this car ranges from 24-35mpg.

That is the trouble with turbos and epa mileage ratings. With a torbo 1.5 engine you can get the mileage of a I.5 engine or the power of a much bigger engine. But you cannot get both at the same time.

If you use the extra power of the turbo to accelerate like you had a bigger engine, you will get the mileage of the bigger engine.

The EPA cycle calls for mild acceleration. If you accelerate slowlyand stop accelerating once you reach cruising speed, you will likely get close to the EPA numbers.

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As several posters have discussed, the driver is the single biggest factor in fuel mileage the car delivers.

Drive as if you have no brakes. Sounds weird but this forces you to look far ahead, anticipate situations and be smoother overall.

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I had a neighbor who complained that their new vehicle did not get any where the miles per gallon they expected. I rode with him one time and found out why. He would just stomp on the gas pedal to take off , slam on the brakes at the last moment and drive 85 to 90 on the turnpike to his job. I also never rode with him again .

Have you owned this car since it was new, or did you recently buy it?
If you have owned it since it was new, is this mpg pattern a new occurrence, or did it always have this mpg pattern?


We have no idea regarding how the OP drives. If he accelerates rapidly away from stop lights, if he doesn’t start coasting as soon as he sees a red light ahead, if he is in the habit of tailgating other cars, and if he is in the habit of “warming up” the engine before driving, he will never be able to achieve the gas mileage for which his car is rated.

The way that it was explained to me, many years ago, is to imagine that there is a raw egg between your foot and the pedals (both gas and brake). If one accelerates “gingerly” so as to not break that imaginary raw egg’s shell, and if one anticipates stops so that he doesn’t have to brake hard at the last minute, he will be able to improve his gas mileage to a good extent.


It used to be that turbo engines had no real-world advantage over the same-power non-turbo. But then I drove a turbo Jetta (1.4L) and got 40 mpg for a month while being impressed with its power. It looks like some turbos do offer real world mpg benefits.

Yes, definitely, but if someone drives so that the turbocharger is frequently in boost mode, then the mpg advantage will be greatly diminished.

Thanks for the replies, they’ve been very helpful.

You’re welcome, but I would still like to know the answers to the questions that I posed earlier, namely…

One other thing: Are the tires the correct size for the Honda? I once went from 6.95x14 tires on a 1968 AMC Javelin to 7.75 x14. It threw the speedometer and odometer off so the odometer registered less miles than actually travelled.

last gen Honda of the trim above basic has a mode for the left screen to reset MPG and trip on every engine start for one of A/B trip meters

another options is “on every tank fill-up”, this is the one I set for Trip B and find that quite convenient on my EX hybrid