Mileage on Base & Sport Models - Drive Accord Honda Forums
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post #1 of 24 Old 04-17-2017, 09:24 PM Thread Starter
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Mileage on Base & Sport Models

I had a 2014 accord base model and would get 560 miles on a fill up according to the estimate on the car. now i have a 2017 accord sport and I'm barely topping off at 490miles. i know the increase in HP from base to sport is just 4 more HP's. Has anyone else noticed this ?

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post #2 of 24 Old 04-17-2017, 09:29 PM
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Wider tires, lower fuel economy.


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post #3 of 24 Old 04-17-2017, 09:49 PM
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Originally Posted by Inspire02 View Post
Wider tires, lower fuel economy.
Yep, wider tires and heavier wheels definitely lower fuel economy. The Sport is also heavier than the LX by 130 lbs on the 2017's.

The Sport even has lower EPA mileage estimates than the LX by 1 in the City and 2 on the Highway, so the decreased mileage really shouldn't come as a surprise...

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post #4 of 24 Old 04-17-2017, 10:01 PM
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Yep it said 400 something range but by half a tank I'm at like 160 at best.

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post #5 of 24 Old 04-18-2017, 05:37 AM
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Quote:
Originally Posted by duoexo View Post
I had a 2014 accord base model and would get 560 miles on a fill up according to the estimate on the car. now i have a 2017 accord sport and I'm barely topping off at 490miles. i know the increase in HP from base to sport is just 4 more HP's. Has anyone else noticed this ?
No, but then again we didn't carpool in your 2014 and we are NOT currently carpooling in your 2017 so I have not been able to notice this.
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post #6 of 24 Old 04-18-2017, 07:23 AM
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It's an Accord. I don't care about MPG or gas prices anymore coming from an F-150.
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post #7 of 24 Old 04-18-2017, 10:26 AM
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My EXL V6 gives 400miles in one full tank- includes highway and local


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post #8 of 24 Old 04-18-2017, 10:38 AM
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My EXL V6 gives 400miles in one full tank- includes highway and local


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Thank you for your contribution to the discussion of the 4 cylinder engine mpg.
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post #9 of 24 Old 04-18-2017, 05:37 PM
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I have a 2015 Sport with the 18 inch rims/tires. I bought a set of 16 inch rims from a 2015 LX on Craigs List with the 205/65 - 16 Firestone Affinity Tires; the Firestones were likely the tires on your 2014 LX, duoexo. Yes, the fuel economy is much better with the 16 inch tires. The 16 inch rims will not fit on a 2016 or 2017 Accord other than the LX which still rides on the 16 inch rims. The best you can do is look on craigs list, ebay, or go for after market rims and fit your car with the the 17 inch rims from an EX or other version with 17 inch rims/tires. You are describing a 14% difference between cars (70/490). I see approximately a 7 - 10 % difference between the 18 and 16 inch tires in highway driving. Your Sport is riding on the 19 inch rims/tires. The 16 inch tires are narrower for less wind resistance; the tires and rims are lighter; the Firestone Affinity tires are designed to maximize fuel efficiency by lowering rolling resistance.

Addendum:Of course, if you are trading every 3 years it is not worth it. I posted the info for others reading the thread in case they are longer term owners.

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Last edited by X72; 04-18-2017 at 05:43 PM. Reason: Addendum
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post #10 of 24 Old 04-18-2017, 09:05 PM
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Does the car somehow take into account the difference in circumference between 16 and 18" wheels? Perhaps with the TPM system? If not, wouldn't this affect mpgs and tank mileage?


Thanks for the clarification.

Bob.
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post #11 of 24 Old 04-18-2017, 09:32 PM
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Quote:
Originally Posted by Crimson&Blue72 View Post
Does the car somehow take into account the difference in circumference between 16 and 18" wheels? Perhaps with the TPM system? If not, wouldn't this affect mpgs and tank mileage?


Thanks for the clarification.

Bob.
17 Sport has 19's

Quote:
Originally Posted by mbk734 View Post
It's an Accord. I don't care about MPG or gas prices anymore coming from an F-150.
I came from a 42 MPG Cruze Eco so I had to get used to slightly less MPG for more space. The fact I went from 93 octane to 87 is where my savings starting to show up.

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post #12 of 24 Old 04-19-2017, 02:33 AM
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Quote:
Originally Posted by Crimson&Blue72 View Post
Does the car somehow take into account the difference in circumference between 16 and 18" wheels? Perhaps with the TPM system? If not, wouldn't this affect mpgs and tank mileage?


Thanks for the clarification.

Bob.
Don't know about the 16" and 18" wheels but on the 17" and 19" wheels, the rolling diameter of both tires is exactly the same at 26.3". I would assume the 16's and 18's would have the same diameter, also.

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post #13 of 24 Old 04-19-2017, 05:40 AM
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Originally Posted by meowcat View Post
Don't know about the 16" and 18" wheels but on the 17" and 19" wheels, the rolling diameter of both tires is exactly the same at 26.3". I would assume the 16's and 18's would have the same diameter, also.
When I plug in the tire size numbers into a tire size calculator online, the 16's come out with a minimally larger circumference than the 18's. However my experience is that the 235/45- 18 Bridgestone Potenza RE97 AS read GPS speed and indicated speedometer speed the same at 70 mph and the 16's read about 1 mph higher on the indicated speedometer speed (71) versus GPS speed (70). There is not that much wear on the 16's I bought so I do not have an explanation for this. A slight difference in circumference could be part of the difference in what I see in mpg advantage to the 16 inch tires. I am also doing this from memory and estimating so I may be a bit optimisitic about the advantage the 16's have in fuel economy. The main point is that the fuel economy difference between the LX and the Sport is mainly due to the tires, not the extra 4 HP and not the slightly higher curb weight since my anecdote is based on changing tire size on the identical car. One can hope that as the engine breaks in, the OP could see a fuel economy improvement.

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post #14 of 24 Old 04-19-2017, 05:47 AM
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I run my tires at 35 psi measured with an Accutire gauge and occasionally pencil stick gauge as another data point. That is something that should be mentioned; make sure to check your tire pressure and do not rely on the indirect TPMS that comes with Accord. I am a fan of the indirect system since I can swap tires without having to reprogram the TPMS.

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post #15 of 24 Old 04-19-2017, 06:09 AM
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Quote:
Originally Posted by X72 View Post
The main point is that the fuel economy difference between the LX and the Sport is mainly due to the tires, not the extra 4 HP and not the slightly higher curb weight since my anecdote is based on changing tire size on the identical car.
Good points- I just want to mention that the higher weight of Sport wheels and tires is "unsprung" weight- meaning that it takes more inertia to get rolling and more power to stop. It is not JUST the wheel size and the higher weight of the car- it is the weight of the wheels (unsprung weight).

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