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Honda Odyssey Real World MPG

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  • azkid2azkid2 Posts: 47
    There has to be something drastically out of whack. My 4 ODYs have almost always gotten over 20 MPG with a small handful of exceptions. I mostly get between 22 and 25 , less in the PHX summer with full time AC. Some independent garage somewhere should be able to get to the root of the problem I know there are knowledgeable people on these boards that could tell what to start looking for.
  • I am getting 12 mpg now and have gotten that before in the winter on my 2006. In warmer seasons I usually get between 15 and 16mpg. I live in Seattle and do a lot of short trips with hills. I try to coast as much as I can. This seems like horrible mileage to me, but I know the hills are hard on a heavy car. I had a 1990 Civic and it only got 20mpg with the same driving. However, my 2008 Mazda 3 can get 24mpg on the same drives and 22mpg in the winter. I often wonder if there is something wrong with this mileage on the Odyssey, but of course the dealer is no help when I have asked about it.
  • Well, I'm glad you guys have such blind faith in your computer readings. My 2010 Odyssey Touring (bought new Nov 2010) was giving what I thought were somewhat low "average mpg" displays of 14-16 mpg (mostly city/rural driving, non-thruway). But it just seemed to me that things were worse than that, so last week I topped it off. Note that the mpg and trip odometer logic automagically resets to zero when the car is filled.

    87 miles later the dashboard display read 14.7 mpg, but the tank showed ~ 1/2 full ! So I filled that bad boy up, and lo and behold it took 11 gals ! Being a Rocket Scientist (really), I did the math. I'll save you the trouble- 7.9 mpg.

    OK, this was one data point, but now I'm keeping track. Must be one amusing algorithm the car computer uses, sort of like the Fed's "massive spending cuts" of 0.01% of the Federal Budget.
  • Touring'2011 in MA: city avg 16.5/18.0; highways 65-70mph ~24.5-25.5 mpg (based on 3 trips to NYC, Montreal & Pittsburgh -> avg temp 15-40F) :shades:
  • Just back from Santa Cruz and San fran. over the Xmas holiday. I got about the exact same mileage.

    Brad
  • gotoyotagotoyota Posts: 280
    After two Odyssey's - an '02 EX and an 04 EXL-RES, I can say with confidence that the MPG ratings for these vans is quite optimistic and must be achieved under the most ideal circumstances. Our avg MPG was consistently in the 12-14 range and ~20 on trips. IIRC, that generation was rated 18/25. Good to know I wasn't crazy.
  • Our 2007: Heavy load with roof pod we got 24 to 27 MPG on a 2000 mile round trip to FL. Maybe your honda MPG read out is faulty. We drive with a calibrated ScanGuage, both speed and fuel flow are right on. We are on cruise control most of the time and drive 1 to 2 MPH UNDER the posted limit when driving conditions permit which means we are driving at 64 to 68 MPH.
  • gotoyotagotoyota Posts: 280
    The gen 2 Ody's (1999-2004) do not have the readout so I obtained my readings the old fashioned way (miles driven/gallons to fill up). Probably not as accurate as your ScanGuage, but pretty accurate when averaged over several tanks.
  • Well I also have a k&n air filter and Mobil 1 oil. Driving style? I drive long distances often, sometime over 1000 miles in a long day and never am I in a rush/race like many drivers, I don't impede traffic but we are passed by lots of cars and trucks. My cars last many miles, right now I've got a 2000 Subaru - 280,000 mi, a 2001 Tundra - 165,000 mi and a 2007 Odyssey - 99,000 mi.
  • Although I have not yet tried with the 2009, driving the 2004 at or below 2000rpm I got 35 mpg on one drive from Albert Lee, Mn, to Lawrence, Ks. Additionally, I turned off the ac going up hills and back on going down. I'm too impatient to run that slow when on a trip on the interstate.

    Brad
  • hes3hes3 Posts: 1
    Hi, it seems that I'm not the only one reporting poor fuel economy with the Honda Odyssey’s, I purchased this car in November 2010 and I been getting the normal dealer replied, is to new, is winter and so on, this was one of the major factor of purchasing this car, my old Nissan Quest gxe 1998 used to consume an average of 14 to 15 mpg combine and my previous 2006 Sienna le an average of 16 to 17 mpg combine and now my 2011 Odyssey ex with 2700 miles has average of 11 to 12 mpg combine.

    I recently drove for over 2 hours in the highway with cruise control on at an average of 70 to 75 mph and got around of 22+ not bad but I was expecting better.
  • nobonobo Posts: 305
    You are not alone in getting poor MPG results. We have had our 2010 Odyssey EX-L now for 12 months and ~8500 miles. Mileage sucks compared to our expectations and the MSRP window sticker. We also kept our 2002 Odyssey, and it gets better MPG than the new one.

    I think Honda stretched the truth when they published their MPG results.
  • gotoyotagotoyota Posts: 280
    Sorry to hear that. I could never achieve anywhere close to what was posted on the window sticker with either of my 2 Odysseys. At first I figured it was just the way my wife was driving but when we took it on a family trip and only got ~20 mpg (19.9 to be exact) averaging 70-75 mph, it proved to me that its window sticker ratings are only achieved under the most ideal conditions. Not that I'm trying to steer people to the Sienna, but just for comparison, our 07 Sienna XLE Ltd. averages about 18 mpg in town (used to be better before the nationally mandated ethanol requirement!) and about 26-30 on the highway at those same speeds, depending on terrain. The Sienna is not rated that high, but that is what ours achieves consistently. I've heard some people complain that their Sienna's don't achieve claimed MPG as well, so I think a lot of it has to do with terrain and driving habits...however, I have not moved since owning the first Odyssey and therefore can compare both vehicles objectively. To be totally honest, I like the Odyssey better now that I've owned the Sienna for a few years, on account of it's less nerdy styling and better driving dynamics. However, the Sienna has proven much easier to live with (yawn) and less expensive to drive. If it came with the Sienna's drivetrain I'd overlook the fact that my last Ody's paint started peeling off for no reason and switch back to the Ody next time around. But for that kind of MPG's I may as well go with an SUV.
  • nedlyjnedlyj Posts: 89
    edited April 2011
    My wife recently *retired* (i.e. totaled) my 1999 Ody EX and I started driving her 2010 Ody EX. My general mixed mileage in the 99 was always between 17-19. Unfortunately, I'm seeing 14-15 now in the 2010, same driving conditions. And that's 30% highway (at 65mph) and 50% at 35-35mph with no traffic lights or stops - and with no passengers, no load, and no AC (FYI, van has about 16,000 miles on it). Wow, that's amazingly lousy. :(
  • gotoyotagotoyota Posts: 280
    Sorry to hear that. I don't get why there are so many Odyssey's out there that return SUV like MPG's but I have come to accept there is a "sweet spot" and if you drive in that range, your MPG's will be good. If you don't, they will suck. Like I said in a previous post, I wish I could option an Odyssey with the engine from the Sienna (...and the Sienna's paint). The Sienna can keep its goofy interior. There's not a perfect family car out there but I've definitely found our (07) Sienna to be the easier car to live with and noticeably less expensive at the pump, without adjusting our driving conditions or driving style vs when we had our Odyssey's. Our Sienna's worst MPG average to date is still over 18 mpg with 100% city driving with lots of stop lights and waiting for kids with engine running. Maybe the new 6AT will help the Ody's mileage to stay honest.
  • nobonobo Posts: 305
    Having similiar MPGs (poor) with wife's 2010 Honda EX-L. Our 2002 Odyssey gets better than the 2010. I think Honda has found a way to fudge the MPG for the window sticker.

    the 6AT is only available on the Odyssey Touring in 2011. Got to have deep pockets to afford the Touring, the rest of the Odyssey crowd gets the 5AT. Thank you Honda :mad:
  • bradkansasbradkansas Posts: 14
    edited April 2011
    I've always understood the MPG on the window sticker was based upon perfect driving conditions on a closed oval and the perfect RPM, or as "gotoyota" puts it, the "sweet spot". Which for my Odyseeys ('95, '04, '09) all purchased new, has been aroung 1800 rpm or about 68 mph. Each of mine has been signifiantly heavier than the previous models. Thus, lower mileage.

    Here's some things you can do to improve your mileage.

    Increase the tire psi 5 pounds.
    Turn off the ac going up hills and when accelerating from a stop.
    Maintain steady speeds.
    Don't wait 'till the last second to apply the breaks coming to a stop to name a few things which will help.
  • For what it is worth I just completed a 2100-mile trip from Florida to the east coast of Canada with my 2010 Ody EX-L and I averaged just over 28 MPG (Imperial Gallon)
    Most of my trip was highway speed 70-75.

    However I did try something that I hadn’t tried before I put TC-W3 2 stroke motor oil in my gas (1oz per 5 gal of gas) I hadn’t tried this before as I only had 12,000 miles on my Ody.
    However after reading about this on the Ody club website with a link to another forum.
    (http://www.ls1.com/forums/showthread.php?t=91206 )
    I thought I would give it a try and it does seem to do what others have claimed.
  • Interesting! Is there any concern about the oil fouling the injectors?
    And, what was your highway mileage under the same conditions using the oil?
    Brad
  • gotoyotagotoyota Posts: 280
    Wow, that sounds like a crazy idea - no offense intended :shades: but I'll have to check it out if it improves MPG's. I would be very interested in the effect it has on injectors and plugs :confuse: Still, if you compare your 28 imperial MPG's to US MPG's, it looks like you were getting about 22.4ish MPG's, since imperial gallons are 20% larger by volume. Correct?
  • gotoyotagotoyota Posts: 280
    You are correct, bad move IMO, but I think after the transmission woes of the previous generation and the fact that this is their first 6AT they probably wanted to limit their exposure...in case things go wrong again. I think that 5AT transmission has cost them a lot of $$$!
  • As for fouling the injectors plugs etc etc . According to what others have reported on the other forum the big improvement that the TC-W3 oil does is cleans the top end . I haven't tried it long enough to report on this, however what I have noticed is quicker starts and better performance.
  • eastcostereastcoster Posts: 3
    edited April 2011
    You are correct on the 22.4 MP- US Gal.
    the 28 + MPG was total average on the 2100 miles.
    My best mileage was on the one tank full that I drove 90% of it at 60-65 MPH
    on secondary roads from Panama City Florida to Jesup, GA

    The link is very interesting with a lot of feed back well worth checking out.
    It seems that the only negative feed back is from the ones that didn't stick to the instructions of 1oz to 5 gal ratio.
  • desertkevdesertkev Posts: 76
    We have an '02 LX that still gets about 23 mpg (But thank you Honda for the failed transmission). I have an '08 that gets 24mpg (both numbers are for highway. City about 18 on both. The '02 has a K&N air filter and I just bought the K&N for the '08. I am a true believer in synthetic oil and K&N air filters to give you slightly better performance all around. Wife is looking at an '11, but afraid of the 6AT b/c as someone else mentioned previously, maybe the trans will be faulty. Who knows.
  • ted99ted99 Posts: 2
    I have a 2009 Odyssey and the sticker for EPA mileage was 17/25. I was expecting it to be nearer the high end as much of my driving is highway miles. Yet I consistnetly get in the 18-20 mpg range; no better than my 2002 Oldsmobile Silhouette.
    I had the dealer put in their recommended fuel additive, but it didn't help.
  • gotoyotagotoyota Posts: 280
    Seriously, you had a Silouhette??? :lemon: just kidding...I had the Pontiac Montana version and had to replace the engine at 80k (the cars fault, not mine) and pretty much anything else that could have gone wrong with it, did.

    No really though, sorry about your mileage in the Odyssey. Maybe Honda was referring to the Imperial MPG rating and hoped no one would question it. They really need to fix that one issue, though, cuz it doesn't seem like many people are getting the published MPG in the real world.
  • 01intrigue01intrigue Posts: 92
    IIRC, our 2006 Ody with VCM had higher numbers on the sticker, but I think they assume you are going 55 mph on the highway with a horse jockey at the wheel and nothing else in or on the van, and only one gallon in the gas tank (full tank weighs almost 200 lbs). Once you go over 65 or 70, it is tough to get the VCM to shut down cylinders.
  • 01intrigue01intrigue Posts: 92
    Ted99,

    We replaced our 2000 Silo with a 2006 Ody. Random electrical issues on the accessories forced us to get rid of the Silo after 110 K miles. Our 2006 Ody now has over 103K with only battery replacements as the maintenace issues.
  • robr2robr2 BostonPosts: 7,818
    IIRC, our 2006 Ody with VCM had higher numbers on the sticker, but I think they assume you are going 55 mph on the highway with a horse jockey at the wheel and nothing else in or on the van, and only one gallon in the gas tank (full tank weighs almost 200 lbs). Once you go over 65 or 70, it is tough to get the VCM to shut down cylinders.

    The numbers on the sticker are based on an EPA test - unfortunately, the EPA test does not replicate real world driving.

    See http://www.fueleconomy.gov/feg/how_tested.shtml
  • gotoyotagotoyota Posts: 280
    Well if that's the case then it would certainly explain why neither of ours ever saw MPG's north of 20. On our trips we were not only driving closer to 70-75 mph (sorry, I just can't drive 55 mph) plus being fully laden with luggage and kids (4 at the time, now have 5). Honda's 3.5 V6 is a sweet engine, maybe they just just need to tune it more for low end torque and less for the VTEC howl that kicks in above 4300 rpm (fun, but doesn't seem to be compatible with the heft of the Odyssey).

    We made the same trip 2x last year in our Sienna, with just as much luggage, not to mention that my kids are getting bigger and heavier, and averaged 26 overall. This is traveling through a mix of level freeways and mountains and was achieved while spending a fair amount of time with the dial registering north of 80 mph. That was before the mandatory change to 10% Ethanol blend so we'll see how it does this time. We are taking the same trip in about 4 weeks.
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