Acura MDX SUV Forums banner

21 - 40 of 41 Posts

·
Registered
Joined
·
2,764 Posts
Yup I had to get a clicking noise fixed from the tailgate when it was brand new.. they said they couldn’t hear it the first two time I went.

do you warm up your car? I do and the dealer told me not to.. so that I get higher mpg

when you are slowing down at a stop sign hear carefully and see if there is a hard rough clunk at 15 miles. Istarted getting this when I follower the dealers advise of not warning up the car last winter. Even after reprogramming the transmission it is still there. Not a good buy
You do realize what the mileage is when you warm the car up? 0,zero. How does that improve mileage? Also,are you going just by the computer? What about at fill ups? How long do you warm up the car? The only reason to warm up the car is for your COMFORT.
 

·
Registered
Joined
·
2,764 Posts
Yup I had to get a clicking noise fixed from the tailgate when it was brand new.. they said they couldn’t hear it the first two time I went.

do you warm up your car? I do and the dealer told me not to.. so that I get higher mpg

when you are slowing down at a stop sign hear carefully and see if there is a hard rough clunk at 15 miles. Istarted getting this when I follower the dealers advise of not warning up the car last winter. Even after reprogramming the transmission it is still there. Not a good buy
You do realize what the mileage is when you warm the car up? 0,zero. How does that improve mileage? Also,are you going just by the computer? What about at fill ups? How long do you warm up the car? The only reason to warm up the car is for your COMFORT.
 

·
Registered
Joined
·
112 Posts
17 SH-AWD Tech. 43K miles. Just drove from TN to southern FL. Two people, suitcases and coolers. 75-80 mph all the way except a bunch of stop and go in downtown ATL. 1st tank was 28.9 mpg on 92 octane with outside temp between 40-60. 2nd tank (partial) was 28.4 on 89 mid grade with outside temp between 52-70. Cold in FL today. If the temp was around 80, probably would have hit 29 plus mpg. Everyday driving around the neighborhood in TN averages 23 mpg. Very happy with this mpg.
Anything under 24 mpg hwy would be a concern with a 3rd gen MDX, but so many things effect mileage. Temperature, type of gas, wind, tire pressure, weight in vehicle, driving habits, rain, etc. Driving to the upper Midwest last fall, I only got 24.5 hwy. Was going against a 15 mph headwind most of the way with temps in the 30-40 range.
 

·
Registered
Joined
·
431 Posts
I called the dealership and he said anything between 8-20 MPG is the norm for this car. So apparently it’s normal? Hopefully once it warms up I’ll get better mileage, super frustrating!!
I doubt warmer weather and summer blend is going to make that much of a difference. Maybe a few mile per gallon but not an additional 10 miles per gallon.
 

·
Registered
Joined
·
8 Posts
Just curious to see what others have been getting... 90% city driving and only averaging 13.5 MPG. I had a Prius so I’m well aware of how to drive fuel efficiently- something doesn’t seem right considering the car is supposed to get 20 mpg city. I should preface by saying we purchased the car brand new. As soon as we got home we realized the apple car play wasn’t working. Had to go back and have them swap out the infotainment system. Next I noticed the engine idle wasn’t working either and they gave us a new a battery and the issue resolved. Should I wait til 5K miles and see where I’m at or go take the car back in? All suggestions welcome!
Is it a hybrid of regular? I have a 2017 MDX non hybrid. My wife is a bit of a lead foot and likes to keep it in Sport mode. Mostly city driving and she gets around 18 mpg. I have gotten as high as 28 on long flat highway stretches. I don't think really any big heavy vehicles like MDX will get good mileage, cylinder deactivation aside. I had a 2006 Honda Odyssey and got around the same, a little less on the highway because only a 5 speed not 8 speed transmission. Is yours AWD?
 

·
Registered
Joined
·
624 Posts
How hilly the terrain is will make a huge difference. If on the flat going 65 in warm weather I get close to 30 mpg. Once I start going up and down hills it drops down to 23 mpg

Sent from my SM-G975U using Tapatalk
 

·
Registered
Joined
·
5 Posts
For the first 4,500 miles on my 2020 base MDX I've averaged 21 mpg with premium. About 60/40 city/hwy driving. On the hwy I usually set the cruise at 80. I've been playing around with the modes, mostly normal and sport. The comfort mode doesn't seem different than the normal mode. Anyone think comfort mode will improve mileage?
 

·
Registered
Joined
·
303 Posts
For the first 4,500 miles on my 2020 base MDX I've averaged 21 mpg with premium. About 60/40 city/hwy driving. On the hwy I usually set the cruise at 80. I've been playing around with the modes, mostly normal and sport. The comfort mode doesn't seem different than the normal mode. Anyone think comfort mode will improve mileage?
Comfort mode won't make a significant difference. The throttle response of the pedal is only slightly dulled compared to Normal mode. This could make your accelerations smoother in the city and therefore save a small percentage of fuel, but it doesn't change physics or how the engine operates. The same effect can be done in Normal or Sport mode if you are easy on the throttle.

Off topic: I drive in Comfort mode 90% of the time because I prefer the light steering feel. When I am driving with spirit, I switch to Normal and use the paddles. I find the throttle response in Normal mode to be very linear which helps me exit corners smoothly. In Sport, I think the throttle is too sensitive down low and it makes the car feel "jumpy," even when I'm controlling the transmission. I don't love the artificially heavy steering in Sport mode, either. To each their own. We all have our favorite ways to enjoy our cars.
 

·
Registered
Joined
·
2 Posts
I may have missed it being shared already but here’s what I may have found. I owned a new 2014 MDX and always got good gas mileage keeping the climate control on auto. I averaged about 20-21 mpg overall. I now have a 2020 mdx and noticed poor gas mileage right away. This new one seems very different. Gas mileage was poor until I shut the auto climate control off. Hope this helps
 

·
Registered
2018 MDX SH-AWD Tech package
Joined
·
687 Posts
My 2018 has averaged 22.52MPG since new allmhand calculated. Of course we live 13 highway miles from town, so my car gets warmed up before town. If you bought this car for exclusive in town you IMHO bought the wrong car. You should have bought a small in town car.
 

·
Registered
Joined
·
2 Posts
My 2018 has averaged 22.52MPG since new allmhand calculated. Of course we live 13 highway miles from town, so my car gets warmed up before town. If you bought this car for exclusive in town you IMHO bought the wrong car. You should have bought a small in town car.
What are you talking about??? I was trying to be helpful replying to the post. I’ve owned the car 5 more years than you have. I’m well aware of what it can and should do
 

·
Registered
Joined
·
112 Posts
Strange .......
I now have a 20 Advance SH-AWD. I had a 17 Tech SH-AWD last Feb. that got excellent mpg (see post above from 12 mo. ago - 29 mpg hwy).
So I’m heading back down to southern FL again from TN yesterday and my 20 Advance is only getting 25 mpg down I-75 thru GA and into northern FL. Last June I got 29 mpg on a round trip to Charleston, SC (800 miles round trip) when it was only one month old with 600 miles on it, but it was 85 degrees out and I always experience better mileage when the temps are warmer.
I now have over 4000 miles on my 20 and can only muster 25 on the hwy the last two days. I was going against a wind of maybe 10-12 mph out of the south, temps from 20 to 55 and no doubt running on a winter blend. Figured that had something to do with it. I was going between 75 to 80 mph the whole way with virtually no deviation in speed.

So, I left northern FL this morning after filling up, heading south and can still muster only 25 mpg in 65 degree temps after about 150 miles. Figured the wind and winter blend are still effecting it. I then decided to fill up 25 miles north of Tampa so I didn’t have to mess with it in my 3 day visit in Tampa. I only got in aprox. 6 gallons (89 octane since the last tank was 93) but as soon as I left, the vehicle just felt more responsive ........ and after getting to Tampa (now on I- 275) I’m getting 30.5 mpg!! I ended getting off the interstate and hitting stop and go go traffic for 15 more miles and my mileage indicator still shows 29 mpg!
Any idea what the heck is going on? Still 65 and windy out but my mileage went by 5.5 mpg.
I check the actual mpg with the mileage indicator often and find that the indicator is fairly accurate, usually within .5 mpg.
I stayed on normal mode the entire trip and the rpms were always around 1800-1900 the entire trip down going between 75-80, unless a hill where it would sometimes downshift to 7th or 8th, but southern GA and FL are not what I would call hilly ... it didn’t downshift often.
6 gallons of 89 octane should not have any effect and no settings were changed after filling up.
I just don’t get it. Any ideas out there on why the sudden change in mpg?
 

·
Registered
Joined
·
2,929 Posts
I sometime experience the same exact issue on 4-12 hr road trips. I always try to stick with Sam's or Costco when traveling; but, there are times when I get the same swings in mpgs. It is also not consistent at the same gas stops on the same roads when I travel again several months later. Overall, the avg mpgs for each duplicate trip are constant with a slightly higher avg in summer compared to winter.

I've noticed on my hybrid, it doesn't take much of a headwind to knock my mpgs down 2-4 at 80 mph. That is the one big downside with the low hp/tq of the 3.0L hauling +4600 lbs at hwy speeds having to work harder than the 3.5L to maintain speed when things get hilly and/or windy.
 

·
Registered
2017 Acura MDX Tech FWD
Joined
·
876 Posts
I've noticed while doing my calculations for my MPGs so far for this year. When I WOT doing speeds we all admit of doing, I saw I was getting 16 MPG. This was only with using 87 from Costco. And with all gas prices skyrocketing due to an incompetent selfish America Last federal government administration, I have been using nothing else but Costco to save on money. Not paying $2.60 per gal for regular when I can pay <$2.30 per gal for regular at Costco; I have been seeing 93 going near to $3 per gal now. But even with going at regular hwy speeds (45 to 60 MPH) I am not seeing as much improvement while on 87. My average MPG so far is 19.15 MPG, where my lowest of the year so far is 16.86 MPG and the best was 20.93 MPG.

May need to clean my TB and MAF sensor sometime soon. I do have a plan to drive up to the Bronx area to drop off my MDX for the rear bumper conversion.
 

·
Registered
Joined
·
2,764 Posts
I've noticed while doing my calculations for my MPGs so far for this year. When I WOT doing speeds we all admit of doing, I saw I was getting 16 MPG. This was only with using 87 from Costco. And with all gas prices skyrocketing due to an incompetent selfish America Last federal government administration, I have been using nothing else but Costco to save on money. Not paying $2.60 per gal for regular when I can pay <$2.30 per gal for regular at Costco; I have been seeing 93 going near to $3 per gal now. But even with going at regular hwy speeds (45 to 60 MPH) I am not seeing as much improvement while on 87. My average MPG so far is 19.15 MPG, where my lowest of the year so far is 16.86 MPG and the best was 20.93 MPG.

May need to clean my TB and MAF sensor sometime soon. I do have a plan to drive up to the Bronx area to drop off my MDX for the rear bumper conversion.
Please keep politics out of your MPG calculations. Mileage will always be lower during the winter.
 

·
Registered
2017 Acura MDX Tech FWD
Joined
·
876 Posts
Please keep politics out of your MPG calculations. Mileage will always be lower during the winter.
Sir I try to refrain from politics, but it's like one of the most recent reasons I have to use to justify for going out of my way to go to Costco on a weeknight to fill up from a near empty tank. On other hand, temps have been consistent with staying in the 70s and 80s even during the winter season, so clearly not sure on why I'm seeing my MPGs in the high teens. I used to fill up at Wawa and other places, but I just can't see nor justify spending extra per gallon for regular at my convenience.

I've developed a habit of shopping for gas ever since I drove 40k miles in 2019 between the Rogue and MDX.

Sent from my SM-G781V using Tapatalk
 

·
Registered
Joined
·
3,146 Posts
krauthawk - Are you hand calculating those mileage figures or are they reads of the MID? I'm not sure how reliable the MID will be on shorter runs/segments. I found it's actually indicating a higher mpg versus my hand calcs on a couple of coast to coast trips - i.e. large sample size of miles and gallons. After the first couple of trips when I calculated just due to curiosity I haven't checked mileage since then since it really doesn't matter - unless you are really experiencing a severe issue that's knocked your mileage down tremendously. I don't think the brand of gas will make any noticeable difference and the octane probably won't be that noticeable on the mpg either - maybe 1mpg or so (but I haven't actually tested this - just a guess).

with all gas prices skyrocketing
I dislike paying any more for something than I can get away with but the rest of the country has it made compared to California gas prices, which are crazy high - mostly due to the tax component. And this is nothing compared to gas in Europe. I've driven all over Europe a number of times and it's best to just not think about what the gas is costing it's so high - the negative thoughts could ruin the trip. Gas prices fluctuate based on a number of things but it's difficult to lay on a particular government other than the direct tax component, which is a simple math question. Prices also affected by supply and demand, embargos in various countries, weather, natural disasters, technology that increases production, speculation in the market, and other causes.

On the opposite end, a long time ago (1980s - pre-socialistic government) I was in Venezuela and the gas prices were ridiculously cheap, around 25 cents/gallon. The locals said the government of this country with huge oil reserves subsidized the gas prices hence how cheap they were. I don't know what it's like there now.

It's okay to complain about gas prices and seek out the best deal - just realize it could be much worse (Europe).
 

·
Registered
Joined
·
2,764 Posts
Sir I try to refrain from politics, but it's like one of the most recent reasons I have to use to justify for going out of my way to go to Costco on a weeknight to fill up from a near empty tank. On other hand, temps have been consistent with staying in the 70s and 80s even during the winter season, so clearly not sure on why I'm seeing my MPGs in the high teens. I used to fill up at Wawa and other places, but I just can't see nor justify spending extra per gallon for regular at my convenience.

I've developed a habit of shopping for gas ever since I drove 40k miles in 2019 between the Rogue and MDX.

Sent from my SM-G781V using Tapatalk
Remember that Texas was basically shut down for a week. As soon as there is a weather event, gas prices go up immediately.
 

·
Registered
Joined
·
112 Posts
Mdxstang ... yes, hand calculating. Actual MPG is very close to what the MID indicates.
Been driving around St. Pete and Clearwater the last two days and the MID indicates around 22 mpg. I will see what I get in a week and a half when I return to TN. Hopefully better than 25.

And my experience over numerous years with numerous Honda’s and Acura‘s is the brand of gas doesn’t matter much when mpg is concerned, and neither does 87, 89 or 91 octane on my 17 or 20 MDX. I run 92 octane Costco when I get to Knoxville but I experience no difference in mpg or driveability compare to other brands or octane.
I did notice a nice increase from 34 to 36 hwy mpg on my 15 Accord V6 Coupe a couple years ago when I used non ethanol 92 octane for a tankful on a trip up north. Got 590 miles on a tankful! But it was 85 degrees out with no wind the entire way. In my experience, warm temps, no or little wind and summer blends can make a BIG difference in mileage.

Thanks
 
21 - 40 of 41 Posts
Top