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Do you really get 17 -22 mpg's? - Click HERE for Original Thread
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csmdx
I have run the trip computer on my X the past couple fill ups and it consistently says i am getting about 13-15mpg. i don't get this because i was under the impression that it would be more like 17-22. do any of you out there get better gas mileage and if so. Can you telll how to improve?

thanks
midnightMDX
I get 18mpg with some highway. Its depends on how you drive. I assume you drive alot of stop and go miles. You just got to be easy with the throttle. Drive slower and leave more of a distance between you and other cars. Make sure your tires are properly inflated and maintenence is up to date.
G. COLTON
It is all about where you drive and your personal driving habits.

While I have personally never seen a average over a tank as low as 13-15 mpg I know it can be done. Jackrabbit starts from stop lights. Excessive idling at stop lgihts. Too many speed changes. Approaching stop lights too fast.

In general low mileage is caused by too much foot into the throttle and/or a restricted driving environment that has only 35mph traffic zones and a lot of stop lights.

G
Russr
Hi folks

I've had my X since late November '07. Most of my mileage (less than 1000!) has been very short runs to clients in the 1-5 mile range. So, no big surprises that I get lousy MPG... tho' I was NOT expecting 10-12!

So, asides from trying to get more highway miles is, not lead-footing it between lights, and not idling with the A/C on (in Houston we already need it!).. any other ideas on how to improve MPG?

russ
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Squishy
Lose weight in the car, keep a light foot, keep the tire pressure at 2 PSI above recommended, and run a light motor oil (5W-30, unless Acura has spec'd it for 5W-20 without my knowledge). With that kind of use, I would run no less than a full synthetic; 3-5000 mile intervals if you don't have the oil life monitor.

I get 19 MPG mixed driving in my '01. 23 MPG all highway at 60 mph.
aruca
From my experience (I'm no car expert)..
1. rpm is directly proportional to mpg. You have to play with the trip computer(TC) to understand your driving style vs. mpg. reset the TC, drive normal, look at the rpm and the TC when you accelerate from stop, drive at constant speed and when you approach any stops. I have found that if you let the rpm go higher than the 2.5x mark gas consumption gets high. That is true even if you are on the hway.

2. I am able to get 16 mpg city (95 % city and all 25 speed limit) by accelerating slowly, coasting to stops and timing stop lights to minimize stops. The biggest hit comes when you have to accelerate from a stop so you got to minimize that. I used to get 25-27 on hways but on my last trip I got 21.

3. Park in garage so you don't have to warm up the car during cold days, if any.

4. Don't keep your car running while you pick/drop kids or similar situations.

5. Inflated the tires to +3 than the recommended. I did see a 1 mpg drop with new Bridgestone Alenza tires.

6. If you have a second car that gives better mpg then use it. I do that when I have access to my second car.

7. For my MDX the fuel octane didn't make any diff in mpg and the same for type of oil. I go for the full synthetic for other reasons.

8. Replaced the old air filter which was really dirty but I didn't notice any mpg change.

After reading thru some articels on this forum I am giving my mdx the techron treatment to see if it makes any difference (currently my mdx is not accelerating smooth)

I believeing that just by following step 2 any car (not just the MDX) can get at least 40-50 miles more on a tankfull.

I very much doubt you will get 17 mpg in the city if it does not include some stretches of 35 speed limit. I should also add that by seeing the driving style of other MDX owners I sometimes wonder if its only my MDX that doesn't give the sticker mpg.

Sorry for the long email. I don't really get to contribute much on this forum :)
midnightMDX
quote:
Originally posted by aruca

Sorry for the long email. I don't really get to contribute much on this forum :)


That was good information. You dont need to by shy here. :p
Blackura
Depends a lot on where you live. I'm in a hilly/mountain area with colder winters. Not a good combo for MPG. I used to get 11-13 city, and my best ever (totally annoying everybody behind me) was 20 mpg. When I drove in a sporting way (the way the vehicle is marketed), mileage was terrible.

My MDX average was 15.5 in mixed city/hiway driving. Which is why I bought a hybrid.
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ncelk
Mine averages 16.7 since I bought it. I love the vehicle, don't care for the mileage and premium to boot. MDX goes away next Monday, I am going to the hybrid as well.........:D
bronxblaza117
highway driving i was able to manage 24mpg!
wasjr
My mileage in my 05 is about like Squishy's, 18-19 combined, and 23-24 on strictly interstate driving at 70-75 mph.
bronxblaza117
city driving me is12-14 mpg's though.
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phins2rt
I got 21.6 over the weekend in the 08. All highway driving about 74 mph. I was quite impressed with the mileage. That was our first highway trip so it wil be interesting to see if this type of mileage continues.
lttmkd5
I average 18-19 city driving and 22-24 highway. Most og my driving is city/suburban with a 9 mil one way commute. I usually am getting 18.5.....I don't do anything special. Actually, I probably drive it harder than I should....but I love the get-up-an-go!
Russr
Hi again, folks

I'm still testing this observation, but:

I was getting an average of about 12 MPG (!) in my X. Very short trips, all inner city stuff - pretty ugly, no matter what.

I decided to try the intermediate octane (Chevron calls it Super, I think). From the same gas station. Same pump, ectually.

Suddenly my mileage seemed to "jump" to 14 MPG. Same daily use.

I live in Houston - pretty darn close to sea-level.

Is this just me being full of it, or is there something weird happening?

russ
Russr
Sorry - forgot to state that I have been using Premium till now...
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psu1994ca
I have a 04 MDX and get about 16MPG. I live in the hills so going home kills the millage.

I have to also point out my favorite tip from above....

FROM aruca

6. If you have a second car that gives better mpg then use it. I do that when I have access to my second car.

Why not also give the tip of... buy a Prius or walk?
midnightMDX
You cant walk everywhere. Not everyone wants to drive a Prius.
psu1994ca
I think you are missing my sarcasm... my point is telling someone to drive another vehicle is not really a tip for a way to improve gas millage on your MDX....
kims MDX
Now that we have approx. 3000 miles on the car, I have a feel for what the averages will be. We get 17 - 18 in city driving (car pool, grocery store & back, etc). We just completed a 750 mile highway trip that averaged 22 mpg.

These averages are arrived at the old fashioned way .... dividing miles by gallon pumped into the car. They are better than promised by the dealer, to his credit.

I hope those of you experiencing the odd mileages are not simply taking the in-car computer's word for it. Those calculations are rough, at best.
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jediwebdude
We had a 2002 MDX that we loved (except for those cursed engine mounts). Wife was the primary driver. We drove it to 97K miles. Fuel efficiency seemed decent for a mid-size SUV. We traded it in for an '06 4 cyl Audi A4 Avant. Since then, we added a 3rd kid and now the A4 is a bit crowded. So we have started shopping for a replacement.

Wife really likes the '08 MDX model. But it seems when Acura bolstered the engine up to 300 hp for the new generation MDX, the fuel efficiency decreased. As I read through this thread, the distinction of fuel mileage is based on old model vs new model.

According to Edmunds, city driving dropped 2 mpg and hwy dropped 3 mpg when the new MDX came out. From what I'm reading in posts here, it seems some are getting even worse in the city than the expected 15 mpg. I realize driving habits play a role, but heck...my '07 V8 4Runner gets 17.5 mpg in the city. I woulda thought the new MDX would do better.
kims MDX
quote:
Originally posted by jediwebdude


Wife really likes the '08 MDX model. But it seems when Acura bolstered the engine up to 300 hp for the new generation MDX, the fuel efficiency decreased. As I read through this thread, the distinction of fuel mileage is based on old model vs new model.



I agree that the move to 300hp probably reduced mpg, but the gain in drivability is worth to me.

Notice in my post immediately above yours that I have a new car .... although I did not specify that its an 08. I am getting much better mileage than those who are complaining of 13-15 mpg. I'm getting better than Acura / dealer promised.
jediwebdude
quote:
Originally posted by kims MDX


I agree that the move to 300hp probably reduced mpg, but the gain in drivability is worth to me.

Notice in my post immediately above yours that I have a new car .... although I did not specify that its an 08. I am getting much better mileage than those who are complaining of 13-15 mpg. I'm getting better than Acura / dealer promised.



I was typing my post when you submitted yours, so I saw it after I posted. You mpg is good news. Which octane level are you using?
kims MDX
quote:
Originally posted by jediwebdude
Your mpg is good news. Which octane level are you using?


I am using the specified minimum of 91 octane .... although its usually 93 that is available.

I read the many posts which take the position that lower octane fuel is fine, but my reasoning is that I paid $40k for the car, and I don't need to save $50 a month by ignoring the manufacturer's stated requirement. I knew when I bought the car that premium was required .... dealer made it clear.

My other car (Porsche) has the same requirement. Porsche even makes it clear that the DME will adjust to lower octane gas and prevent any knocking. However, I apply the same reasoning that I use in the MDX. I didn't spend all that money to sacrifice performance (or anything else) by scrimping on octane to save a few bucks.

There was a saying that was already old when I was a kid (looong ago) that went something like, "if you have to ask how much fuel a yacht uses, you can't afford it".

Kim
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gmc74
quote:
Originally posted by kims MDX
Now that we have approx. 3000 miles on the car, I have a feel for what the averages will be. We get 17 - 18 in city driving (car pool, grocery store & back, etc). We just completed a 750 mile highway trip that averaged 22 mpg.

These averages are arrived at the old fashioned way .... dividing miles by gallon pumped into the car. They are better than promised by the dealer, to his credit.

I hope those of you experiencing the odd mileages are not simply taking the in-car computer's word for it. Those calculations are rough, at best.



Funny thing about the in car calculator, on mine (and others that have posted here) , it is pretty accurate. I have calculated my mileage both ways, and find that they are about even
psu1994ca
I have also compared the in dash computer to the "old fashion" method and found that the computer was almost an exact match to what I was getting. It may be a little off, but then again... if you are doing it the old fashion way... there is no real way for that to be accurate either.
kims MDX
quote:
Originally posted by psu1994ca
I have also compared the in dash computer to the "old fashion" method and found that the computer was almost an exact match to what I was getting. ... if you are doing it the old fashion way... there is no real way for that to be accurate either.


By deduction, then, your computer is not giving you an accurate MPG reading.

That is: if your computer is "almost an exact match" to your manual calculations .... and "there is no real way for [manual readings] to be accurate " .... then, by logic, the computer must be just as lacking in accuracy. java script:smilie(':)')

Seriously, though. I'm glad to hear the MDX has such an accurate fuel flow calculation. I firmly believe that any reasonable effort to be consistent & : fill up /note miles traveled / fill up again will produce an mpg calculation that is close enough for any purpose.

Kim
psu1994ca
Ok.. you got me on a technicality! :)

What I was getting at is when you fill up at the pump and write down the fuel put in, this can different from pump to pump or gas station to gas station based on the sensitivity on the pump to shut off.

There is a Shell close to my home that will shut off about 2 gallons before full.

So... what I am getting at is the numbers do not match exact, but within 1/2 MPG on either side... If I was betting.. i would put the accuracy on the car... not the math.
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kims MDX
quote:
Originally posted by psu1994ca
What I was getting at is when you fill up at the pump and write down the fuel put in, this can different from pump to pump or gas station to gas station based on the sensitivity on the pump to shut off.

There is a Shell close to my home that will shut off about 2 gallons before full.

So... what I am getting at is the numbers do not match exact, but within 1/2 MPG on either side... If I was betting.. i would put the accuracy on the car... not the math.



OK. I don't disagree. That is why I would not draw a strong conclusion from a single tank, I guess. I would think that the type of issue you describe would even itself out over several fill-ups being counted into one calculation; e.g. 960 miles with a total of 44 gals in 3 fill ups. If the 2nd tankful pump stopped 2 gal early, then the 3rd tankful would have to make up that difference .... assuming it did not stop at the same early point.

Enough .... its 65 outside and time to put the top down and go for a drive.

Kim
psu1994ca
a convertible MDX! NICE!
gmc74
quote:
Originally posted by psu1994ca
a convertible MDX! NICE!


If you guys really want an accurate reading do this...

Next time you fill up, keep pumping until the gas spills all over the ground. Then do the same thing the next time too... that should give you as close to an accurate number as you can get

:2:
kims MDX
quote:
Originally posted by psu1994ca
a convertible MDX! NICE!


Not quite .... although the sun roof is nice.

MDX is the wife's primary transportation. Mine is the other car in the garage.

Kim
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DAC17
I just got 17.8 from my first tankful in my new 2008 base. What they all said about light on the throttle, foot off the gas when possible, don't rush stop signs and lights, try to time lights if possible, etc.

Lots of mental work to start, but it becomes second nature after you do it for a while. Also, when you do that, it saves gas for the times when you want to have some fun with it!
Glen M
This time of year can be a bad time to figure out mileage. Some gas companies still have winter formulas, which have higher ethanol, as winter blends in there stores.
FountainMeister
When I got our 08 from the dealer it had 13.4mpg on the display. After the initial panic I remembered the comments here and reset Trip A and Trip B. The first tank finished up at 19.4, both off the display and dividing the actual gallons.

With 700 miles on it now I got 21.4 on a 230 mile trip yesterday (CT to RI and back, fairly flat) This was a mix of interstate and suburban driving. It was interesting cruising at 72+ and watching the mpg tick up to 21.9 before hitting some congestion. The motor seems happy when it can stretch its legs.

I recently rented a FWD Ford Edge (with 3500 miles on it) for a 500.3 mile trip across Michigan and Ohio and got 21.7 mpg of practically all highway miles. The AWD was supposed to be worse.

So I feel a little better of how the long term performance will be once the engine breaks in. This is more of an experiment to see what it can do and learning to practice and enjoy "smooth" driving. I liked the comment by DAC17 about having some fun. I did not get the vehicle to leave the tach at 2000 forever. Mother was right: If you eat your veggies you do get to have dessert!
SKIP2IT
MPG---I HAVE O7 ABOUT 13K. TOOK TRIP EASTER WKND. ALL INTERESTATE WESTERN PA AND NORTHERN NY. 24.8 MPG. IN TOWN AROUND 19.3.

BEEN LIKE THAT SINCE AROUND 9000K. USE 92-93 FUEL.
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LionSpeed
quote:
Originally posted by SKIP2IT
MPG---I HAVE O7 ABOUT 13K. TOOK TRIP EASTER WKND. ALL INTERESTATE WESTERN PA AND NORTHERN NY. 24.8 MPG. IN TOWN AROUND 19.3.

BEEN LIKE THAT SINCE AROUND 9000K. USE 92-93 FUEL.



I would bet the "caps lock" button is your best friend. :1:
JRxNyC
The most I ever got was 23.3 mpg on just proper inflated tires, putting the car in neutral at long red lights, going easy on gas pedal, and using fuel injector cleaning treaments once in a while
RecalcitrantRon
3,300 miles of mixed driving and I am getting 18.5. On a pure freeway trip, i get as much as 22.5. It's still a shock coming from a 2001 Civic manual tranny which got 33-35 easy, but the X is a whole different animal.
critique
I've driven her 2 tankfuls so far, the first was from the dealer...I'm sure the cheap stuff...got 13.2mpg. Filled it up with premium on the second tank cuz the Acura sales guy said it would 'blow the carbon off the plugs' which sounded like a load to me.
Anyway, got 14.2mpg on the premium stuff.

Seems like my mileage is much lower than others have posted here.
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midnightMDX
It all depends on how you drive it and what your drive is like. Are you basing this off the reading on the dash or are you self calculating? I found the dash to be dead on in some instances and others times a bit off.
gsMDoX
New base '08 with 2730 miles on the clock.
Calculations and trip computer measurements agree within 0.5 mpg.
Results: city/hwy normal commute mixed=19.6, 20.3, 21.5
highway (trip to Florida) = 23.5, 24.5, 25.6 (lower value cruising at 80mph).

Very, VERY pleased over the '05 Volvo XC90 I traded in.
critique
I have driven it mostly on 45mph roads with light traffic and some lights. Each tank (regular and premium) I drove on the freeway to our other office once which is the same as the normal drive but with an additional 15 minutes on the freeway (no traffic).

I think its early...I'll keep an eye on it. I am going by the reading on the dash. Too lazy to care enough to measure myself.
Only bothers me because my wife wouldn't let me get the Yukon I wanted because it was a gas-hog. If 14mpg is what I am going to get, then it wasn't worth it....

Yes, I love my MDX but I'm a big guy and nothing beats a Tahoe/Yukon for driver comfort.

Cheers!
BlackieMDX
My 04 has about 50K miles on it and it gets 22 mpg easily now that the weather has warmed up. In the winter it was more like 16-18 mpg.

I think 24 mpg is a possible in pure highway driving.
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microman
My '03 with 103,000 miles on 'er got 23.6 mpg last weekend on a trip up to Tahoe at about 300 miles. Usually get 21.5 to 22.5 on commute - mostly fwy. Can't complain about that. If you romp it, you'll get much less. I have been using 87 octane for most of the life of my X and have had no probs. Once in a while juice it up with premium tho and do enjoy the xtra oomph.
kingmdx
I'm getting 18.7mpg but i do 99% city driving ...when I do go on longer runs I get 23.8mpg ...this is by hand calculations. On the gauge i see 19 and 24.2 respectively ...but that's not accurate as hand calculations obviously. Oh the X has 6k miles on it.

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