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SUVs Acura RDX Acura RDX Real World MPG
189 messages, Last post on Nov 08, 2009 at 3:44 PM
You are in the Acura RDX Forum. Your Hosts are steve_ & tidester
| We are getting 20mpg after 500 miles in 50/50 stop and go + 70mph express way driving. | |
| On 9/20/08 I got 24.0 mpg on a 134 mile trip from Irvine, CA to Santa Barbara at an average speed of 67 mph. Light traffic, little or no wind, 3 adults, overnight luggage, roof rack, but nothing on it. All numbers from the trip computer. This car was purchased Dec 2008 and had about 8000 mi on the odometer at the time. My only real complaint about this car is the quirky voice recognition system in the Tech package. | |
| I have a new 2008 RDX, base (owned for 3 weeks). It's Black/Black and shines up beautifully (using Klasse). Early mpg says 24 plus on the highway. 15 plus exclusively stop and go local driving. I expect that once it has 10,000 miles on it, mpg will be slightly better by then. Other than the not-so-great mpg, this car is fabulous, and I view the mpg as one small compromise in exchange for a great drive. | |
| On a recent trip between Park City, UT and Sun Valley, ID on mostly (80%) freeway at 75-80 (75 speed limit) my mileage was 23.7 by hand and 22.8 on the tech computer. I use the paddle shifters for almost all deceleration, used no A/C with windows closed and do not do any special tricks to enhance mileage. Fuel used is 91 octane. | |
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Replying to: woodyww (Apr 12, 2007 10:50 am) Since most of the time you spend driving the RDX you are off-boost you are sacrificing a serious level of FE improvement for the rare and brief periods of "on-boost" acceleration. Mill the engine head to raise the CR to the "standard" of 10:1 and "wire" the turbo wastegate fully open and you will likely see an FE improvement in the range of 30-50% Or even better use VVT-i to dynamically change the CR from Atkinson cycle mode for cruising but into the Miller cycle as boost rises. So much for TURBOCHARGING...!!
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Replying to: wwest (Apr 01, 2009 4:43 pm) The traditional ease the pedal acceleration won't save gas? |
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I've finished my first tank of mystery gas (dealer supplied). Some city driving (steep SF hills), lots of highway miles, and I went up and down the Santa Cruz mountains five times. 330.7 miles/14.966 gallons = 22.1 miles/gallon Love the boost when you need to merge and pass. The handling is phenomenal on the twisty mountain climbs and descents! I admit that I went pretty easy on the gas pedal as the engine is still breaking in, but I still has numerous full-on accelerations to merge and pass on the freeways. Gas mileage was probably improved as descending from the mountains was most engine braking and little to no throttle. The only negative so far is that the navi got lost in the heavy tree cover of the SF mountains.
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Replying to: mark4490 (Apr 19, 2009 3:24 pm) 720 miles/35.196 gallons = ~20.5mpg Not bad considering we were rolling through high elevations so the boost was kicking in even while descending. The drive down CA-1 was a BLAST! I finally got to really test the SH-AWD. I'm not sure, but I think the VSC kicked in on one corner that I overcooked. It was both downright terrifying and thrilling at the same time. There was no way I was going to take my eyes off the road and glance down to check how many bars I was up to, but on one sweeping corner I saw the meter go up to 3 bars. We also had a huge scare and almost ran out of gas on N101. The low fuel indicator had gone off, but I thought I could go another 50 miles before it got serious and we'd have to look for a gas station. The low fuel light had gone off on me before. That time I went 40 miles and found out that I still had 4+ gallons left in the tank when I filled up. Luckily, my GF is from the area so she knew that there was a 24 hr gas station near Garberville. When we filled up I was surprised that we put in 17.3 gallons! I thought we'd have ~3 gallons left! I'm not sure if we would have made it to Garberville. We'll fill up when it gets down to 1/4 tank next time. This brings up an issue I have with the navi system. Little towns with little to no services show up (Leggett, Piercy), but bigger towns with (ie., Cloverdale) don't unless you zoom all the way in. I don't think that gas station showed up on the RDX navi system, either. My Garmin handheld GPS is much better and more reliable. If I didn't have a "local" with me I could have been in serious trouble.
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Replying to: mark4490 (Apr 26, 2009 8:06 am) 
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Replying to: geohov (Nov 08, 2009 6:51 am) Why..? Most of the time the RDX runs in detuned/"derated" mode. During "cruise" mode the compression ratio is significantly reduced from the Otto mode standard. |
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