Post actual MPG on your new RDX
#81
Burning Brakes
Here's an overview of the process: https://www.fueleconomy.gov/feg/how_tested.shtml
...and here's the specific protocol: https://www.fueleconomy.gov/feg/fe_test_schedules.shtml
On that 2nd link go the the last tab for a summary overview.
Last edited by MI-RDX; 08-14-2018 at 06:52 AM.
#82
Advanced
So maybe if I move to sport mode I will get better MPG? I have the same city/hwy ratio you had and used premium fuel and got 4.3 MPG less which seems odd. Are you going above 2000 RPMs often in getting to your desired speed?
#83
22mpg average for us after 1000 miles and 93 octane. about 50:50 city/Houston area interstates. Advance with SH-AWD. 80% in sport, the other 20% in comfort and +. I did get 27 driving about 40 miles in I-45 at an "easy" 65mph. I feel the mpg numbers are a bit stretched. For contrast, we purchased a 2018 Honda Accord Touring at the same time with essentially the same engine. Using regular gas in that one and driving it more aggressively. It seems to average 25 city and 35+ easily on the highway.
#85
So far averaging 21 mpg with 90% highway (but its the 405 in California and doesn’t always move fast). I need to accurately measure weekend jaunts a around town which has been low. What is the typical engine break in period? I have 700 miles.
#86
WayTooManyAcuras
After 4500 miles I'm averaging 21.4 miles, hand calculated, I've been using mid-grade unless premium is cheap (like at Sams or Costco). I drive highway and back streets, not too much city. I also tend to be a bit at the top of the speed limit chain. ![Smile](https://acurazine.com/forums/images/smilies/smile.gif)
On a side note, I actually got to the '0' miles left, and the gas gauge going completely out today (not intentionally)!! The car took 15.8 Gallons before auto-shut off when I filled it up. Just FYI in case you find yourself in a similar situation.
![Smile](https://acurazine.com/forums/images/smilies/smile.gif)
On a side note, I actually got to the '0' miles left, and the gas gauge going completely out today (not intentionally)!! The car took 15.8 Gallons before auto-shut off when I filled it up. Just FYI in case you find yourself in a similar situation.
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Fury63 (08-16-2018)
#87
1500 mile trip with trip computer reset at the begining - 75% interstate, average speed 73 mph, Comfort mode, SH-AWD/Advance, level terrain, used ACC, the remainder stop and go in Sport Mode, 93 octane fuel mostly with one fill up using 89 octane - MPG calculator showed 28.4 at end of trip
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pgeorg (08-16-2018)
#88
So I have had my new RDX for about a month and just went over the 1000 mile mark today and I have averaged 19.7 MPG with about 75% city driving and 25% highway driving in comfort mode all but a couple times. I have to say I was hoping for near 21 mpgs with this ratio. I reset my trip meter on a drive out of town this afternoon and had to drive in a construction zone going 55 and that is the only time I have seen the MPGs cross 26. When I was out of the construction zone and went another 30 miles at 75 to 77 mph the average dropped to about 22.4. It seems the only way to get the true highway miles is to go between 45 and 55 mph which is not too realistic for most US highways.
Is anyone else getting better MPG with highway or city driving? I am not gunning it really and have probably driven more calmly than usual.![Smile](https://acurazine.com/forums/images/smilies/smile.gif)
Is anyone else getting better MPG with highway or city driving? I am not gunning it really and have probably driven more calmly than usual.
![Smile](https://acurazine.com/forums/images/smilies/smile.gif)
With 3300 miles on a 2019 FWD, I’m averaging 24 mpg overall, 63% highway/37% city. I’m observing 25 mpg average for road trips, and 20 mpg for mostly city driving.
Be careful about relying on the trip computer’s reported mpg during the first thousand miles or so, as it may not have had time to realistically “average out” the results for all the kinds of driving that you do. Hand calculations will be more useful, at first. My current 24 mpg is reported both by the trip computer, which I have not reset since new, and by Fuelly.com’s calculations based on my odometer readings and gallons bought. This is the first time I’ve ever had a very close match between the two methods (for total miles driven, not just for one trip).
#89
Drifting
Join Date: Apr 2018
Location: New Yorkie, Hudson Valley
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From my POV, this is a purely academic question. As a practical matter, I’m gonna drive the way I’m gonna drive, and get what I’m gonna get.
Over on the Accord forum, there were these high mileage guys who were eeking out 40MPG, while I wasn’t. So, on a trip to PA I decided to hypermile too. I hit 40 mpg as well, but “I can’t drive 55”, nor do all the other crap to eek out each mpg.
Don’t get me wrong; I care about efficiency. But I ain’t going crazy about it. It is what it is, and, over the course of a year, it don’t amount to much of an issue.
Over on the Accord forum, there were these high mileage guys who were eeking out 40MPG, while I wasn’t. So, on a trip to PA I decided to hypermile too. I hit 40 mpg as well, but “I can’t drive 55”, nor do all the other crap to eek out each mpg.
Don’t get me wrong; I care about efficiency. But I ain’t going crazy about it. It is what it is, and, over the course of a year, it don’t amount to much of an issue.
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pgeorg (08-20-2018)
#91
Advanced
About 1400 miles on a Canadian Platinum Elite SH-AWD.
About 50/50 City/Highway. City being 30-45mph, Highway being 70-75mph.
100% 91 Octane. 100% Sport Mode.
Mileage: 25mpg (Imperial gallon), 21 mpg (US gallon). Not according to the trip meter but calculated.
My lifetime average on my 2012 TL SH-AWD was 26 and 22 ...
About 50/50 City/Highway. City being 30-45mph, Highway being 70-75mph.
100% 91 Octane. 100% Sport Mode.
Mileage: 25mpg (Imperial gallon), 21 mpg (US gallon). Not according to the trip meter but calculated.
My lifetime average on my 2012 TL SH-AWD was 26 and 22 ...
#92
OK, so I have filled up the tank for the 4th time. Driving has been about 80% in town, probably 50% Comfort, 35% Sport, 15% Sport +.
Calculated averages 20.4, 23.9 (mostly highway), 21 and 20.8. Car estimates 20.9, 22.6, 20.8 and 20.9.
The averages for the RDX are not much different from my 2012 TL, SH AWD at the end when the driving was pretty similar.
Billy
Calculated averages 20.4, 23.9 (mostly highway), 21 and 20.8. Car estimates 20.9, 22.6, 20.8 and 20.9.
The averages for the RDX are not much different from my 2012 TL, SH AWD at the end when the driving was pretty similar.
Billy
#93
I've only filled up once (I have about 450 miles on my RDX) but when I got out the car this morning, my average is at 25.3 combined. That's a bit higher than what I've been getting. Usually I'm around 24 MPG. This is with 25% city 75% highway but I'm stuck in traffic quite a bit in SoCal.
#95
The "AverageMPG" on the gauge panel is configurable in the Settings. The dealership showed me you have several options that change the way it's calculated. the option that makes the most sense (which is not the default) IMO is to have the car reset the Average every time you fill up. [You'll notice it decline if you just idle after filling up; and change less and less as you use more of the tank] The sales guy said it's fairly accurate.... of course the true MPG is the old fashioned way by logging your tripmeter mileage divided by your gallons every time you fill up.
#96
The "AverageMPG" on the gauge panel is configurable in the Settings. The dealership showed me you have several options that change the way it's calculated. the option that makes the most sense (which is not the default) IMO is to have the car reset the Average every time you fill up. [You'll notice it decline if you just idle after filling up; and change less and less as you use more of the tank] The sales guy said it's fairly accurate.... of course the true MPG is the old fashioned way by logging your tripmeter mileage divided by your gallons every time you fill up.
#97
Drifting
Join Date: Apr 2018
Location: New Yorkie, Hudson Valley
Posts: 3,001
Received 1,026 Likes
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The "AverageMPG" on the gauge panel is configurable in the Settings. The dealership showed me you have several options that change the way it's calculated. the option that makes the most sense (which is not the default) IMO is to have the car reset the Average every time you fill up. [You'll notice it decline if you just idle after filling up; and change less and less as you use more of the tank] The sales guy said it's fairly accurate.... of course the true MPG is the old fashioned way by logging your tripmeter mileage divided by your gallons every time you fill up.
#98
![](https://cimg0.ibsrv.net/gimg/acurazine.com-vbulletin/360x270/img_1118_0bebb7e7c00c681ed8672cb059c30dbbfda338f3.jpg)
Hey all, just wanted to give an update from a drive I took today.
I got to drive to Chattanooga, TN to Tracy City, TN, 48 miles (+ or -) one-way, almost 1200 feet of elevation gain. 2/3 freeway driving, 90% comfort, stayed close to the speed limit. Going up the back road to Tracy City is a *fantastic* drive in a sports car (or a SH AWD vehicle), so I did have some fun.
Billy
#99
Filled up for the second time on Friday. Trip computer stated 25.7 MPG and I got 24.7 hand calculated, so a mile off. I got 350 miles before I decided to stop and get gas. I'm not sure how far I'm willing to go down before a fill up. Has anyone tested this yet?
#100
I drove a 2019 RDX 2WD Advance and here is MPG
First, I do NOT have a 2019 RDX yet, but I took one for a 120 mile trip doing a dealer transfer. It had 800 miles on it when I moved it, daytime about 85 degrees. In my case, I reset the MPG readout, and drove the 120 miles with all but several blocks on the interstate. For the first 100 miles, it was in the SPORT mode and the MPG indicator was at 27.8-28.0 mpg, I then figured out how to get it into COMFORT mode, and for the last 20 miles, it was reading around 31 MPG. I drove in the 70-75 mph range. I was impressed and am even thinking of getting one. But, I have looked on here and am really disappointed to see the poor mileage reported and I will have to drive more of them before I make a further decision. Could it be, too many of you are getting lead feet on your vehicle, I do not drive like that, I go for mileage on all my vehicles, thus, I tell people, I drive like I have a egg between my foot and gas pedal, trying not to break it. Yes, I know that one likes to hit the gas, and I do at times of need and no need just to have fun. I hope I see better mileages posted here. I do not have a chance to test the new cars on local driving, so cannot report on that. Normally, I drive for Honda and there is a quirk I find in most all Honda's when they are new: For some reason, I dont know why, but when i leave a dealer to move a car, I reset the mpg A and B, and many of them show very low mileage on both A and B. After 5-10 miles, I usually reset the B mpg readout and then I usually get a much higher readout. If I leave the A readout and go all the way , a 100 miles or so, the B readout is always the highest, but the A will come up, but not to the B readout. In other words, I am saying that there has to be a quirk in the mpg readouts on a new vehicle. Now, since I have only driven one 19 RDX, I cannot confirm this happens in them, but since both probably have the same parts, it will probably happen on them too. Perhaps some of you can try a reset and see if it gets better MPG. I have driven Hondas for years and 100's of them I can say I have definitely observed this happening. One of my things is MPG and I check it on every car I drive do these transfers. Thanks for reading
Rob
Rob
#101
From my POV, this is a purely academic question. As a practical matter, I’m gonna drive the way I’m gonna drive, and get what I’m gonna get.
Over on the Accord forum, there were these high mileage guys who were eeking out 40MPG, while I wasn’t. So, on a trip to PA I decided to hypermile too. I hit 40 mpg as well, but “I can’t drive 55”, nor do all the other crap to eek out each mpg.
Don’t get me wrong; I care about efficiency. But I ain’t going crazy about it. It is what it is, and, over the course of a year, it don’t amount to much of an issue.
Over on the Accord forum, there were these high mileage guys who were eeking out 40MPG, while I wasn’t. So, on a trip to PA I decided to hypermile too. I hit 40 mpg as well, but “I can’t drive 55”, nor do all the other crap to eek out each mpg.
Don’t get me wrong; I care about efficiency. But I ain’t going crazy about it. It is what it is, and, over the course of a year, it don’t amount to much of an issue.
#103
Cruisin'
#104
#105
How did you get 29.8? Wow.
So I see other folks are getting rated mileage. I'm wondering if I have a lemon or just need to drive like and a granny and never pass anybody (kinda defeats the purpose of driving an RDX) I have 1800 miles on my RDX SH-AWD (Comfort mode) and I've had several 250 mile trips. So far, my MPGs are 18.25, 20.5, 19.48, and 20.93.... not one tank better than rated City 21 MPG, yet alone the 27 rated highway. I've been using 93 octane premium. What am I missing and do I have a lemon? What's your secret? Driving 55? ....I'd get killed driving that speed in Texas.
I like everything else about the car except for the as-yet empty promises on getting Android Auto....
So I see other folks are getting rated mileage. I'm wondering if I have a lemon or just need to drive like and a granny and never pass anybody (kinda defeats the purpose of driving an RDX) I have 1800 miles on my RDX SH-AWD (Comfort mode) and I've had several 250 mile trips. So far, my MPGs are 18.25, 20.5, 19.48, and 20.93.... not one tank better than rated City 21 MPG, yet alone the 27 rated highway. I've been using 93 octane premium. What am I missing and do I have a lemon? What's your secret? Driving 55? ....I'd get killed driving that speed in Texas.
I like everything else about the car except for the as-yet empty promises on getting Android Auto....
#106
Burning Brakes
Since getting mine over 1300 miles ago my mileage is sitting at 23.8. About 65/35% city/highway (highway is 70+MPH). I've only put in Shell or BP 87 octane, don't know what the dealer had in for the first tank.
#107
How did you get 29.8? Wow.
So I see other folks are getting rated mileage. I'm wondering if I have a lemon or just need to drive like and a granny and never pass anybody (kinda defeats the purpose of driving an RDX) I have 1800 miles on my RDX SH-AWD (Comfort mode) and I've had several 250 mile trips. So far, my MPGs are 18.25, 20.5, 19.48, and 20.93.... not one tank better than rated City 21 MPG, yet alone the 27 rated highway. I've been using 93 octane premium. What am I missing and do I have a lemon? What's your secret? Driving 55? ....I'd get killed driving that speed in Texas.
I like everything else about the car except for the as-yet empty promises on getting Android Auto....
So I see other folks are getting rated mileage. I'm wondering if I have a lemon or just need to drive like and a granny and never pass anybody (kinda defeats the purpose of driving an RDX) I have 1800 miles on my RDX SH-AWD (Comfort mode) and I've had several 250 mile trips. So far, my MPGs are 18.25, 20.5, 19.48, and 20.93.... not one tank better than rated City 21 MPG, yet alone the 27 rated highway. I've been using 93 octane premium. What am I missing and do I have a lemon? What's your secret? Driving 55? ....I'd get killed driving that speed in Texas.
I like everything else about the car except for the as-yet empty promises on getting Android Auto....
I used to drive a hybrid, so I tend to try to time lights, I coast some going downhill, but not so much that I lose speed.
Sorry I can’t give more suggestions, I have been driving like this for at least 13 years and it just seems to be automatic.
Billy
#108
#109
Something seems wrong with the 16.5 mpg calculation by Dizzy's RDX. Dizzy states that there were 300 miles on the odometer and the RDX was on the first tank. The tank only holds 17.1 gallons. If the tank was empty at that moment, the mpg would have been 17.54 mpg (300/17.1). Assuming the tank shows "empty around 15.5 gallons, the mileage would work out to 19.35 mpg (300/15.5).
#110
Something wrong1
Something seems wrong with the 16.5 mpg calculation by Dizzy's RDX. Dizzy states that there were 300 miles on the odometer and the RDX was on the first tank. The tank only holds 17.1 gallons. If the tank was empty at that moment, the mpg would have been 17.54 mpg (300/17.1). Assuming the tank shows "empty around 15.5 gallons, the mileage would work out to 19.35 mpg (300/15.5).
#112
Advanced
So I have had my new RDX for about a month and just went over the 1000 mile mark today and I have averaged 19.7 MPG with about 75% city driving and 25% highway driving in comfort mode all but a couple times. I have to say I was hoping for near 21 mpgs with this ratio. I reset my trip meter on a drive out of town this afternoon and had to drive in a construction zone going 55 and that is the only time I have seen the MPGs cross 26. When I was out of the construction zone and went another 30 miles at 75 to 77 mph the average dropped to about 22.4. It seems the only way to get the true highway miles is to go between 45 and 55 mph which is not too realistic for most US highways.
Is anyone else getting better MPG with highway or city driving? I am not gunning it really and have probably driven more calmly than usual.![Smile](https://acurazine.com/forums/images/smilies/smile.gif)
Is anyone else getting better MPG with highway or city driving? I am not gunning it really and have probably driven more calmly than usual.
![Smile](https://acurazine.com/forums/images/smilies/smile.gif)
#113
So I reset my trip meter after 1000 miles to see what my MPGs would be from 1000-2000 miles and can now report out. The ratio of city to highway driving was about the same (perhaps 70% city instead of 75% city this time), and I did change two things. First, as someone suggested, I put the car in Sport mode the entire time since I drive more in the city and am probably a more aggressive driver than most. Second, I figured out how to get the auto idle engine to kick in every time I was stopped. Between those two things and the car being more broken in, my MPGs went from 19.7 for the first 1000 miles to 20.6 for the second 1000 miles. We'll see how 2000 to 3000 miles goes, but I just wanted to report out.
Billy
#114
Advanced
https://acurazine.com/forums/third-g...e-stop-972485/
#115
I actually created a thread on this topic a month or so ago as I was not able to get the auto idle stop to work very often. I ensured that "Auto" was always on and since then it has worked for me. Someone else said as long as the AC was not cranked up it would work for them. Now it kicks in over 95% of the time for me when I come to a stoplight.
https://acurazine.com/forums/third-g...e-stop-972485/
https://acurazine.com/forums/third-g...e-stop-972485/
Billy
#116
Advanced
Thanks, I have been reading that as well, but nothing I do activates auto idle stop. Many mornings I run without air conditioning, so it is not that. I think there is something wrong with some system in the car and the dealer will have to run some tests at the first oil change.
Billy
#117
There are a couple of buttons that say Auto on it I believe (not in my car now but I remember thinking that when I searched for the right Auto button). If you have the right one selected, and have the Auto-Idle button turned on, it should be working. If its still not you might want to call the dealer and ask about it.
Billy
#118
There are a ton of prerequisites for it to work, including the hood being latched (???). It could be a switch like that having an open circuit, which wouldn’t throw a CEL or other indication on the dash.
#119
I know there are many on here who wish they could have my problem, but I hope when I take it to the dealer they can find what has failed.
Billy
Billy