Last post on Aug 28, 2013 at 6:17 AM
You are in the Acura RDX
What is this discussion about?
Acura RDX, Fuel Efficiency (MPG), SUV
#194 of 223 2011 SH-AWD
Oct 30, 2010 (2:24 pm)
I have the 2011 with SH AWD.
First tank averaged 24-25.9 MPG in stop and go construction traffic on the highyway.
Second was about 23
Third has a little more around town driving and was about 21
and now on my 4th I am at 19.5.
On the highway, I'm pretty much 70mpg or lower 15 miles each way then local roads with stop and go for the other 5-6.
I try not to step on it and use the turbo as much on local roads, but occasionally I do have to use it. Same on the highway. I'm at about 800 or so miles so the engine is not totally broken in.
Shouldn't the average MPG go up as the car gets broken in? I'm not looking for 28mpg but 21-22 would be nice.
#195 of 223 Re: 2011 SH-AWD [lilduke]
Oct 30, 2010 (2:25 pm)
Oh, My first two tanks were Shell and BP gas, last two were Costco and Marathon. Since it uses premium, should I be sticking with Shell, Mobil and BP or is it OK to go with the others like Citgo, Speedway and Marathon?
#196 of 223 Re: 2011 SH-AWD [lilduke]
Nov 03, 2010 (8:52 am)
On the highway, simply cruising along, or anytime the lockup clutch is engaged, your RDX engine is running in detuned/derated "mode". An optimal base/native compression ratio for a N/A DFI (DISI) engine should be ~12:1. But your engine is forced induction so the non-boost, base/native compression ratio must be substantually lowered from what would otherwise be considered optimal for a DFI engine.
10:1 with certainty and maybe even as low as 7-8:1 if the turbo is to spin up really quickly and substantually raise the effective CR. So you can expect hwy FE about 20% lower than an equivalent displacement volume DFI engine.
#197 of 223 2008 RDX w/tech AWD - 25mpg
Feb 21, 2011 (5:07 pm)
Hey, just wanted to share our numbers. Just purchased this used with 40k and on the first tank we have gotten 24-25mpg mostly highway 65-75mph. My fiance drives to school which is mostly small highway and got 25.5mpg with a few stops to get on different roads. Average speed for her is probably 50mph the whole 80 mile trip. I think these are very good numbers and we mostly do not hit traffic which may be the reason but we also don't stomp on the gas too much either. If you are getting less than 20 mpg in normal driving you either have a lead foot or highly unlikely have a vehicle defect. Good luck!
#198 of 223 2013 RDX mpg
May 22, 2012 (5:21 am)
Anybody have any info on the real world 2013 RDX MPG???
#199 of 223 Re: 2013 RDX mpg [m6user]
May 26, 2012 (7:11 am)
I am also interested in knowing the real world MPG, comparing with x3, q5 then decide which one to buy.
#200 of 223 Don't trust the mileage meter
Jul 12, 2012 (2:30 pm)
My RDX is about 6 weeks old. It's too early to say. Mileage has been all over the map (along with my driving situation, very mixed and inconsistent), however one thing that's starting to piss me off is I suspect the mileage meter on the dash is consistently inflated. My most recent tank showed 24.4 MPG, but the actual mileage was 22 MPG. I'm going to watch more closely the next few tanks.
#201 of 223 Re: Don't trust the mileage meter [quakerwildcat]
Jul 12, 2012 (3:06 pm)
That's exactly what I've seen on my 2007 TL and my 2010 HS250h - they both read 2-3 MPG higher than manually computed. Even averaging it over 3-4 tanks it still shows 2-3 MPG higher. Almost everyone I've talked to who correctly computes their actual mileage says their MPG meter reads ~10% higher than the actual mileage.
#202 of 223 More info on MPG
Jul 22, 2012 (7:42 pm)
thanks for the message. Please update when you have more information.
#203 of 223 Re: Don't trust the mileage meter [quakerwildcat]
Aug 10, 2012 (6:42 pm)
I seem to settling consistently in the 24-25 MPG range, that's with a mostly highway commute plus about a 1/2 hour of city traffic every day. I think that's pretty good.