| kjcolv |
| My new MDX started out getting 18 mpg and I was a little disappointed, then it dropped to 16, then to 15, and today is was even at 11.5. I have reset the computer numerous times. It was just in for the 7.5K maintenance. I asked them to check it out and they said everything was fine, "the mileage runs a little lower than the sticker". I use 93 octane, the mileage is about the same city or highway. The last highway drive, straight highway cruise control on, it got 15. Any ideas on what to have checked out, ways to improve the mileage?? Any help??? Otherwise I absolutely LOVE the vehicle but the mileage is killing me, I drive about 35K a year and while I was unhappy about the initial 18, I would be ecstatic to have that now!! Thanks for your help |
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| g_dog01 |
The only suggestion I have is doing some "hand calculations" the next few times you fill up, just to have something to compare with. That should tell you whether your trip computer is the problem or if your X is actually getting that low of mileage.
Good luck! |
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| TheWorm |
Are you driving in D4 or D5?
Tire pressure? |
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| strife63 |
| Do you have automatic climate control on? That brought my MPG down from 18.8 to 15.2. (City/Highway) |
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| msu79gt82 |
... but your mileage is too low. As already recommended do a hand calculation to check the trip computer.
We routinely average 20-23 on the highway with the A/C running. Last month on a 1100 mile trip to Lubbock, TX and back we averaged 21 with the A/C on and going uphill (Katy is at ~50' and Lubbock is at 3100' elevation). |
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| kjcolv |
| Thanks for the insights I did a thread search but most of them seemed to go off into a discussion about 91 vs 93. I didn't find much about declining mileage or mileage this low. It's been a concern since I bought the MDX. I do use the auto air (it's Florida) but I will try and see if it makes a change as well as do manual calculations on the mileage. I'll report back |
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| msu79gt82 |
quote:
Originally posted by kjcolv
Thanks for the insights I did a thread search but most of them seemed to go off into a discussion about 91 vs 93. ... It's been a concern since I bought the MDX. I do use the auto air (it's Florida)...
I live outside of Houston (just as hot) and have much better mileage. We took the MDX to Sarasota (Longboat Key) last summer in June and averaged 23 mpg on the trip (~2500 miles round trip). If after a hand calculation confirms highway mileage below 17 (your last trip on cruise was 15 - I assume it wasn't set on 90) I'd insist that the dealer take a serious look at it. |
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| MDX350 |
| Your mileage is too low. Don't rely on the trip computer, but if fill-up to fill-up you get that low a mileage, something is wrong. Assuming you have eliminated the usual suspects (tire pressure, etc.) - take it back to the dealer and tell him to give it to you in writing that 11.5 mpg is "within the normal range" - obviously, he won't. Keep bugging the dealer until he finds out the problem and fixed it - if the dealer is unwilling to cooperate, contact Acura directly - maybe you have a lemon. In any case, keep the pressure on, that's your only choice. |
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| rvehock |
quote:
Originally posted by kjcolv
I use 93 octane, the mileage is about the same city or highway.
I took a run down to Naples (Florida) over the Labor Day weekend from Clearwater. I got 23.6 MPG on the highway, and 20.5 with a mix of city and highway. I was using 87 octane during the entire weekend due to the high fuel costs and I can honestly say that I did not notice any difference in performance or mileage. |
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| iceman1331 |
quote:
Originally posted by strife63
Do you have automatic climate control on? That brought my MPG down from 18.8 to 15.2. (City/Highway)
When I drove on the streets of San Francisco where stop and go traffic is so frequent and the stop lights are on almost every other block, the MPG could be as low as 8-9 if the climate control is put to Full Auto. It helps little bit if the control is set to semi-auto.
On freeways, the MPG is back to 23 average.
One way to save gas is to turn off the auto climate control system, but it gets less comfortable inside the X without any climate control.
You can turn the fans on, and turn off the A/C. This however makes the inside air warm and moist which cause the windows to fog up easily. I have owned other cars, the X is the one that gets fogged up easily if you turn off the climate control.
IMO, the easiest way to save gas without turning on the climate control is to roll down some windows for ventilation while driving on local streets.
:rolleyes: |
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| RonH |
quote:
Originally posted by iceman1331
When I drove on the streets of San Francisco where stop and go traffic is so frequent and the stop lights are on almost every other block, the MPG could be as low as 8-9 if the climate control is put to Full Auto. It helps little bit if the control is set to semi-auto.
On freeways, the MPG is back to 23 average.
That's about my MPG here ... I get 9-10 when all I do is drive back and forth to work as it's a very short jaunt. However, in regular city driving I average around 15-16, and the minute I get on the open road, it heads right into the mid 20s. |
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| Mr Zipps |
| Since your car has low miles I dont know if this may be the cause but you might have some kind of buildup somewhere. Pour a bottle of fuel injector cleaner in your gas tank next time you fill up. See if that helps... |
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| DEZRVIT |
| The only decrease I have noticed is from where I buy gas, Chevron seems to give the best MPG for me. Filled at a BP and lost almost 3 MPG, sticking with Chevron. |
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| JMT2003 |
A new air filter may help some:)
I find that when I drive my X like the undercover sports car that it is or when my wife drives it, the MPG declines dramatically. If I take it easy, 22 - 23 MPG is the best I can get. 25% city and 75% highway...
In Tampa, you should be about 50/50 and average 18-19MPG...
Good Luck!!! |
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| ostrowc |
| Mileage will wary on a variety of factors some of which include tire pressure, temperature, humidity, driving style, climate control setups etc... etc... |
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| texrb |
| If you still have poor mileage after going thru the checklist from other posters (manual calc from fill up; proper tire pressure; auto climate off, etc) then have your dealer check the computer to be sure the fuel mixture ratio isn't too rich. I had that problem in another car several years ago (10 mpg no matter how I drove it) and the culprit was a bad sensor in the car's computer. |
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| Blackura |
I have an '03 with approx 15k miles on it. I get 11 mpg driving conservatively going block by block in my neighborhood with stop signs at every corner.
12 miles to work each way on commercial highway (malls, stores, etc along with 37 traffic lights, mostly red) I get 15.5 mpg, again driving conservatively.
Highway exclusively, I get 20-21 mpg stopping only for tolls. I use only the recommended Premium 93 octane. But I can't drive 55, so take that into consideration.
I notice that our friends on this site who live in Texas or other flat, warm areas get better mileage that those of us in areas with four well-defined seasons and lots of hills or mountains. Both temperature and terrain make a big difference, as does the stop-and-go vs highway factor. |
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| texrb |
quote:
Originally posted by Blackura
....................
I notice that our friends on this site who live in Texas or other flat, warm areas get better mileage that those of us in areas with four well-defined seasons and lots of hills or mountains. Both temperature and terrain make a big difference, as does the stop-and-go vs highway factor.
I agree that stop and go vs hwy is a big factor, but I don't get any better mileage than others. I avg about 14 mpg for stop & go driving & 17 mpg if I do a city/hwy mix. Hwy trips avg 21 - 23 depending on the terrain - all using 93 octane for the most part.
Another factor is the person behind the wheel - and how they drive. In any event - it seems to me that the mileage of the MDX kjcolv drives should be much better than it currently is. |
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