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Real world gas mileage for sedans

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Comments

  • >I'd beg to differ. We had an 03 Civic EX and left on our first long trip when it was less than two weeks old. We got 42 mpg on two different legs of the trip which also covered about 1500 miles. I've never heard of a car performing so poorly.

    I beg to differ. 1500 miles is not sufficient mileage for proper engine break-in (especially the piston rings). You can check any website or major automotive publication's long term test on vehicles, and you will see for yourself that performance/mileage figures improve as the engine breaks in (usually starting at 5000+ miles or higher).

    >If a car doesn't get at least it's city mileage on the highway, you've either got a real , you are an extremely aggressive driver , you've got the O/D turned off, or you're driving with your left foot on the brake.

    I'd bet the poor mileage probability breaks down like this:

    Agressive drivers - 80%
    Lemon - 5%
    Everything Else - 15%
  • jefferygjefferyg Posts: 418
    1500 miles is not sufficient mileage for proper engine break-in (especially the piston rings). You can check any website or major automotive publication's long term test on vehicles, and you will see for yourself that performance/mileage figures improve as the engine breaks in (usually starting at 5000+ miles or higher).

    So what you're saying is the mileage I got in my Civic should have improved from the 42 mpg it got when the car was only two weeks old?

    I don't know about the automotive publications or websites, but I do know that no new vehicle that I've ever bought has ever shown any significant increase in fuel mileage over what it averaged on the first tankful. And my guess is that most people have had the same experience I have.

    I do, however, think your probabilities are quite accurate.
  • jefferygjefferyg Posts: 418
    I hear a lot of people claim that they can get better gas mileage out of their vehicle by NOT setting the cruise control on the highway. I used to feel the same way, but with our current vehicles this doesn't seem to be the case. We have an 04 Mountaineer with V6 and an 06 VW Passat 2.0T, and each seems to do better if I just set the cruise and let it go. My suspicion is that it has something to do with the newer 5 and 6 speed Automatic Transmissions, but I don't know.

    Has anyone else had similar experience? And what's your theory?
  • lmacmillmacmil Posts: 1,756
    If you could control the throttle position exactly with your foot and if you could tolerate the speed changes as you went up and down grades, then maybe driving without cruise control would give you better mileage. Very few people could do #1 and even fewer could tolerate #2 and my guess is that any increase achieved wouldn't be worth the aggravation.
  • lmacmillmacmil Posts: 1,756
    I haven't noticed any change in mileage on my 2004 Highlander V6 as it broke in. We took our first trip with about 800 miles on the odo. Now have 13,000 and highway mileage has remained pretty consistent in the 21-22 mpg range. Typical highway speed for us is 8 mph over the limit, i.e., 73-78 mph.

    With today's manufacturing tolerances, I don't think the break-in period is nearly as long as it used to be.
  • waiwai Posts: 327
    My 04 Jetta GLI also get consistently 21.5-23 mpg starting from the first tank of gas until now (11,000 Miles. Mostly highway one person @75mph). Seems the break in doesn't has any impact on the gas mileage.
  • captain2captain2 Posts: 3,971
    you need to read an article in the most recent issue of CR addressing this problem specifically. The EPA city test is not an accurate representation of real city driving. As a result, all claimed mpg figures are overstated sometimes by as much as 40%. It was interesting that they found the greatest discrepanicies with the hybrids. Highway mpg (at 55mph) tended to be accurate per this article. Which does jive with my experience with my Avalon (22/31), the highway mpg easily met, but, in true City driving I can see mileage down in the mid teens.
    The mfgrs. are just playing the game as it is, and designing cars specifically to do well at precisely those conditions that are not an accurate representation of the ways we actually drive. In fact, the tests are not done on roads at all! The CR article does call for revising the tests - but, the cheating, as you call it, is a condition of the rule book, not any particular mfgr.
  • mnrep2mnrep2 Posts: 200
    At 8,300 miles, sustained highway speeds of 75-80 with short 90 mph bursts and still seeing 24-25 mpg. Combined with 18-20 mpg around town.

    I have no complaints with that level of fuel economy compared to the performance this car is capable of :D
  • tocatoca Posts: 147
    This change will get us closer to "real world" calculations....

    http://www.usatoday.com/money/autos/2006-01-10-epa-fuel-economy-ratings_x.htm
  • mmattmmatt Posts: 5
    2001 Toyota Siena: 3L v6 Auto 88k miles 24mpg straight hwy trip/ 20 is average

    1997 Ford F150 4.2L V6 Auto 125k miles loaded work truck 14mpg avg almost 20mpg hwy.

    1995 BMW K1100LT 1100cc 5spd cycle 78K miles 38-42mpg avg with city/hwy mix.

    1995 Toyota Avalon 3L v6 Auto 200k (yes 2 hundred thousand) 33mpg mostly highway

    1993 Honda Accord EX 4cyl Auto 165k miles 24mpg avg

    1993 Honda Cicic LX 4cyl Auto 119k miles 40mpg mostly hwy

    1988 Honda Accord DX 4cyl 5spd 280K (yes 2 hundred and eighty thousand) 33mpg avg.

    1988 Honda CRX SI 4cyl 5spd 112k miles 36mpg hwy driving
  • habitat1habitat1 Posts: 4,282
    "At 8,300 miles, sustained highway speeds of 75-80 with short 90 mph bursts and still seeing 24-25 mpg. Combined with 18-20 mpg around town.

    I have no complaints with that level of fuel economy compared to the performance this car is capable of"


    Interesting, at 4,300 miles, sustained highway speeds of 75-80, with short 90+ mph bursts, I also see 24-25-26 mpg. In my 911S Cabriolet. In our Acura TL 6-speed, loaded with the family and luggage, we're at 29-30 mpg.

    And, in both cases, I have no complaints compared to the performance capabilities. :)
  • I don't know the city mileage, because I only used my Maxima for trips of 200 miles or more. I never averaged less than 28 mpg for any trip taken, and I did get 34 mpg on one trip from Indianapolis to Allentown, PA.

    I just traded for a 2006 Passat 3.6L. I hope my mileage will be just as good.
  • adamrockadamrock Posts: 2
    Sorry to let you down pal, but you will never get better then 21-23mpg in youre new 3.6L Passat. At least you have the comfort of knowing you are almost a second faster 0-60 then the 2.0 Turbo, too bad you have to run Full Syn Oil and Premium gas, thats gona hurt a bit.
  • dudleyrdudleyr Posts: 3,456
    On the highway a 3.6 Passat does much better than 23 mpg.
  • waiwai Posts: 327
    What is the average speed?
  • anthonypanthonyp Posts: 1,857
    On five hundred mile trips I got an average of twenty six point one driving about eighty mph....On one trip I got stuck in a long jam and the mpg dropped to twenty five and a half....Around town around eighteen or so...I don`t pay that much attention as the trips are very short...The engine is 4.2 v 8 tony
  • neil5neil5 Posts: 118
    2006 Toyota Avalon City Diving 25.2 mpg thus far.(3rd tank(
  • waiwai Posts: 327
    Just fill in my Jetta VR6 with this new oil (BP Ultimate 93 with 10% ethanel), mileage decrease from 20.55 mpg to 20.15 mpg(a 2% decrease in mileage from MTE blend oil)
  • kakaokakao Posts: 2
    Where can I find mileage comparisons? I only know this site:

    carconsumption.com
  • redwagon1redwagon1 Posts: 6
    Some interesting info:
    https://www.fueleconomy.gov/
    Some "real world" metrics from some anonymous volunteers:
    https://www.fueleconomy.gov/mpg/MPG.do?action=browseList
  • Kirstie_HKirstie_H Posts: 10,918
    A national newspaper is looking to interview consumers who are changing their holiday plans because of the high prices in gas (ex. driving closer to home or driving, versus flying). Please send an e-mail to ctalati@edmunds.com no later than Thursday, May 25, 2006 by 5:00 PM PST/8:00 PM EST containing your daytime contact information and a brief sentence or two on how you’ve changed your plans.

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  • hals120hals120 Posts: 20
    My 2004 Acura TL has 38,000 miles. From shortly after break-in until now, my in town mileage is a steady 24 mpg, and on the highway, I can pull 29 mpg - even while exceeding the posted limit. :)
  • petomlinpetomlin Posts: 103
    So Far I'm very happy with my milage especially on the highway. Just returned, tonight, from a 150 mile Turnpike trip. 31 - 33 mpg, average speed of 70mph. Car just reached break in, 650 miles. Gotta love it! :D
  • habitat1habitat1 Posts: 4,282
    "My 2004 Acura TL has 38,000 miles. From shortly after break-in until now, my in town mileage is a steady 24 mpg, and on the highway, I can pull 29 mpg - even while exceeding the posted limit."

    Wow, I think I need to pay you a visit. I have a 2004 TL 6-speed with 23,000 miles. Just returned from a trip - 370 miles in which I drove between 70 and 80 most of the way - and got 29.4 mpg. However, I average 15-17 mpg around town and that does not include a rush hour commute.

    Please describe the kind of in town driving you do and your driving habits/style that produces 24 mpg. Thanks.
  • lmacmillmacmil Posts: 1,756
    Everyone's "in town" driving is going to be different. I recent changed my route to work. Instead of 7 miles thru town with no more than 2 miles at 40 mph, I am going 8 miles with 7 of them at 40-50. Similar number of stops. My mileage increased almost 2 mpg.
  • badgerfanbadgerfan Posts: 1,565
    So you increased your commute distance by 14.3%. If your 2MPG did not increase at least 14.3% you are burning more fuel with your longer route. For example at 20 mpg driving 7 miles you use .35 gallons. At 22mpg and driving 8 miles, you are using .364 gallons. For this example you are better off driving the shorter commute at worse fuel efficiency.
  • lmacmillmacmil Posts: 1,756
    "For this example you are better off driving the shorter commute at worse fuel efficiency."

    That's true but I'm willing to pay the extra $.04 per day for a more relaxing commute and higher average speed.

    Btw, the point of my post was to show that two different "city" driving routes can have a significant effect on mileage.
  • gladumfgladumf Posts: 2
    I found this site that lets you track your gas mileage and compare it with others of the same model:

    http://www.gasaroo.com

    The Toyota Prius results are interesting to look at.
  • rickwjennrickwjenn Posts: 40
    I picked up my TL w/Navi and Auto today. Very nice car. Got 29 mpg on the 52 mile drive back home. Very impressive. Did 85 or so the whole way with AC on. Car has 57 miles on it now. I am very curious if it will pick up as the car breaks in.

    What is really impressive, is the Accord EXL we bought today as well for my wife. No trip computer obviously, but the gas gauge is still past full after the 52 mile trip :)

    I bought both from an Acura/Honda dealer combination north of San Diego. Got both cars right at invoice and am very happy. These are our 10th and 11th Hondas over the last twenty five years :)
  • badgerfanbadgerfan Posts: 1,565
    Well, you are not breaking in your TL very gently.

    Also, on almost every vehicle out there, the fuel gauge will not move much if the tank was filled completely full. Fuel gauges are very nonlinear devices especially in the first 1.8 or so tank, and it would not surprise me that the gauge still read full after 52 miles. Doesn't mean you got tremendous mileage, in fact it means almost nothing.
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