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Fuel mileage for first generation 4cyl RDX's

 
Old 01-31-2016, 08:12 PM
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Originally Posted by mrhwin View Post
last two tanks i'm averagin 14mpg.. I'm pretty suprised.. 2011 with 21k miles, is this normal? Last tank was city driving, commuting within NYC and about 60 miles highway at most..
Yes, I can see that, knowing NYC. This thing really guzzles in start-stop driving.

That said, I just completed a 487 mile round trip to Tahoe from the San Francisco area, going from sea level to 6000 feet, and up to the ski resorts several times.

Averaged 23.3 mpg on my sticky brand new Michelin XI2 snow tires
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Old 02-01-2016, 12:02 PM
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Did you spend a lot of time in traffic? That can have a huge impact.
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Old 03-26-2016, 03:58 AM
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I just got 13.59 tonight, however, I did sit idling for a combined hour or so last week waiting on two thunderstorms... And I warm it up before I leave for a few minutes, and a few other times, but still it's not much, and I always got 17-18-ish in my last vehicle... The only consolation is more power... Oh well...

2007 RDX Tech
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Old 03-26-2016, 02:33 PM
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I usually get around 20-21 in 90% hwy driving. Traffic really does a number on the fuel economy. I have 111,000 miles now and have the same fuel economy as new. '11 AWD

3-4 years ago when I had a wheel bearing go bad and was afraid to drive it too fast on the hwy, I did 60-65 all the way home from work...85 miles...and got 28 mpg! Amazing how speed really affects mpg.
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Old 03-28-2016, 02:38 PM
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Here's a snapshot of my fuel logs via fuelly.com


  • Miles Gallons MPG Price City %
  • 270.30 14.836 18.22 2.450 30%
  • 210.90 15.900 13.26 2.200 65%
  • 186.50 13.530 13.78 2.290 100%
  • 182.00 13.680 13.30 2.390 95%
  • 217.90 15.330 14.21 2.490 75%


Obviously we didn't buy it for MPGs. And having a 3 mile work commute doesn't help either. Enjoy the drive!
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Old 03-30-2016, 12:04 PM
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23 mpg on the last 30 mile drive. Not bad. Just picked up this car a few weeks ago. Love it.
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Old 06-02-2016, 05:29 AM
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Originally Posted by RDX10 View Post
Haha, I think we did him a huge favor!
Just an update
My new average this quarter is now at 18.55MPG

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Old 06-06-2016, 03:18 PM
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My average per the trip computer for the past 900 miles is 23.3. This is a 2011 FWD version. In reality, it is probably between 22.3 and 22.5, as we can all attest that the trip computer MPG is usually too high. I am not disappointed given some of the mileage figures others have posted. Like I have said, the sweet spot on MPG is between 50 and 60 mph. But on highways, 60 is driving like Miss Daisy, so crank up the turbo and go 80
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Old 07-04-2016, 07:11 AM
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I just got 12.28...

2007 RDX tech-180,400 miles...
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Old 07-04-2016, 02:27 PM
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Originally Posted by Midnight Mystery View Post
I just got 12.28...

2007 RDX tech-180,400 miles...
Unless you are driving it like you are trying to evade the cops all the time, that is WAY too low for normal driving. I used to drive mine like it was stolen, and in city stop and go, and still get 18-19mpg. Maybe your spark plugs/air filter/ignition coils need replacing?
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Old 07-04-2016, 09:40 PM
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Originally Posted by RDX10 View Post
Unless you are driving it like you are trying to evade the cops all the time, that is WAY too low for normal driving. I used to drive mine like it was stolen, and in city stop and go, and still get 18-19mpg. Maybe your spark plugs/air filter/ignition coils need replacing?
No just taking off from lights pulling 3-4K rpm at most, nothing insane...

Air filter is new, cannot tell with plugs and coils, I think the MID will suggest that before 200,000 so within 20,000 miles...

It starts kind of rough sometimes and even stalled a while back...

I think my altinator is going bad, I posted a thread the other day, but it's been a ghost town for me...

OP, I do not want to hijack your thread, just talking to another member who asked me a question...
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Old 07-05-2016, 10:52 PM
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11.72 tonight,but I've been leaving the engine running while I sit because it will go dead quickly if I don't ...
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Old 07-06-2016, 09:38 AM
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I average 13-15 city driving and 18-19 on highway. All on e85.
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Old 07-06-2016, 10:34 AM
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I've been driving my RDX like I stole it since getting it back a few weeks ago after 3 months of sitting for the air bag recall. Getting about 16-16.5 combined mpg when I was averaging about 18.5 - 20 mpg when I was driving normal with about 60%-70% hwy at 70-80 mph. Still better than my MDX on average; especially in the city when I can see 14-15 mpg with 100% city with the MDX (big girl makes up for it on the hwy with sometimes +22 mpg). Either one still can't beat my TSX with 25 mpg on bad day and up to 36 mpg on a good one for about 28 mpg average between fill-ups (pretty much V-6 TLX numbers with I-4 power).

Last edited by mrgold35; 07-06-2016 at 10:41 AM.
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Old 12-05-2018, 11:05 AM
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I get about 18.55 out of my 2012 with 74589kms on it. Average speed is about 37km/h. We drive mostly in stop and go.
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Old 12-05-2018, 12:19 PM
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Just crossed over 150k miles yesterday in my 2010. Averaging 26 mpg on my current fill so far (100 miles in), and about 24 mpg since my last oil change (6000 miles back...I'm about due for another).
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Old 12-05-2018, 01:29 PM
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Originally Posted by Tomtwtwtw View Post
Just crossed over 150k miles yesterday in my 2010. Averaging 26 mpg on my current fill so far (100 miles in), and about 24 mpg since my last oil change (6000 miles back...I'm about due for another).
not sure how you get it that high I wish I could but then again I don't buy cars for fuel economy well ok it's on the list of things to consider but very low.
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Old 12-05-2018, 02:13 PM
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See a few post back!


It's been way better, like 22.2, lately...


I think it was because I reset the trip computer....
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Old 12-05-2018, 02:13 PM
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Gets about 28 mpg highway...
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Old 12-05-2018, 04:17 PM
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Originally Posted by Willowbeast View Post
not sure how you get it that high I wish I could but then again I don't buy cars for fuel economy well ok it's on the list of things to consider but very low.
I'd guess a number of factors including road conditions, type of traffic, driving style, etc. Much of my commute is on very smooth roads, in fast-flowing highway traffic. I can get over 30 mpg on my 25 mile drive home from work on some days. Drive in is usually closer to 25 (must be that massive 500 ft elevation difference between work and home!)
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Old 12-06-2018, 07:22 AM
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Originally Posted by Midnight Mystery View Post
See a few post back!


It's been way better, like 22.2, lately...


I think it was because I reset the trip computer....
I'll try that on my trip back home. Reset the TC and see what the reading is.
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Old 12-06-2018, 07:26 AM
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Originally Posted by Willowbeast View Post
I'll try that on my trip back home. Reset the TC and see what the reading is.

Let it go awhile, at first, it was reading like 11.2 or 13.8, I'm not kidding... After a 10-20k miles, it went up to 20-22 mpg, but I'm doing tons of highway now... Like, 700-1000 miles a week...


It's exlensive on gas, but that's the only real "flaw" with this car... And it's more about driving habits rather than F/E facts...
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Old 12-06-2018, 08:34 AM
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2007 RDX with 162,000 miles. Average fuel use for 100% in-town/suburbs driving is currently at 16.8 mpg. Average speed is currently at 19 mph. I like the turbo A LOT and frequently take off from lights pretty hard, just because I can....
Been sitting idling running heater a fair amount lately. Average speed was up to 21 mph for a bit.

2008 MDX with 173,000 miles, under same conditions of almost 100% in-town driving, is at 14.5 mpg
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Old 12-06-2018, 09:20 AM
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I get around 17.1-17.6 MPG while zipping around town. I drive like a teenager (cause I am a teenager), and usually when I fill up my tank all the way up I get about 300 miles to 320. Thatís with Premuim gas.
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Old 12-08-2018, 11:39 AM
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Originally Posted by AlanW View Post
2007 RDX with 162,000 miles. Average fuel use for 100% in-town/suburbs driving is currently at 16.8 mpg. Average speed is currently at 19 mph. I like the turbo A LOT and frequently take off from lights pretty hard, just because I can....
Been sitting idling running heater a fair amount lately. Average speed was up to 21 mph for a bit.

2008 MDX with 173,000 miles, under same conditions of almost 100% in-town driving, is at 14.5 mpg
Sounds normal to me. If you live in a congested metro area and do a lot of city driving, you'll never higher than 20mpg for sure.
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Old 12-10-2018, 07:08 AM
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Reset the TC and as of this morning I'm getting 22mpg. We'll see once I drive back home.
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Old 12-10-2018, 11:25 AM
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Originally Posted by Stephenjp13 View Post
I get around 17.1-17.6 MPG while zipping around town. I drive like a teenager (cause I am a teenager), and usually when I fill up my tank all the way up I get about 300 miles to 320. Thatís with Premuim gas.
Just as a means of comparison, I was at 421 miles when my range ticked to zero (while waiting in line at Costco for gas...haha). The pump ticked off at almost 17 gallons on the dot, so my "real world" economy for the tank was about 24.7. The car I believe said 25.5, which is normal for me. It always reads a bit high.

Also, at zero miles of range I apparently still have a gallon in the tank. One of these days, just for shiggles I may fill a portable unit and drive until it putters out to see just how far you can go on zero.
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Old 12-10-2018, 03:34 PM
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Cool experiment, but dont clog up or burn out the fuel pumps... Yes, there are 2! And they're $900 from AutoZone...


I had my tame up to 19 gal last week, so these have the infamous, endless tank, like the TL and Accord of the same 'era!!!


My Optima is the exact opposite!
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