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Ok, this is going to sound stupid, but I don't know the answer, so I'm going to ask. We have a '06 XC90 2.5T AWD, OSD June '06, it now has a little more than 3000 miles on it, but when I figure the mileage the old fashioned way, is IMO not that great. Around town, which is most of my driving, I'm getting at best 16 mpg. Just got back from a weekend jaunt, almost all hwy, and got about 19.5 mpg on the way down and about 21 mpg on the way home. I figured part of this difference was using the cruise control almost the whole way home. I didn't use it for about half of the way down because of bad weather and bad traffic. So, should I be getting better mileage or is this just because the car isn't really broken in yet? I saw the thread about mileage on the V8 but that didn't really answer my question.
 

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Re: Gas Mileage... when can you expect better?? (momscar)

Fuel economy generally improves as the engine breaks in and the electronics complete their learning-mode adaptation. On ours, it was about 5k miles. But, don't expect shockingly more than what you're getting. Our 04 2.5T AWD gets about 18 in everyday driving and maybe 22 highway. It's a heavy car!<p>Tom.
 

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Re: Gas Mileage... when can you expect better?? (tmtalpey)

you guys are lucky. i get 16-17 with mixed and city driving and 18 for mostly freeway driving. i drive an '05 2.5T AWD with 27k miles. mileage never really got better for me. `=(<p>
 

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Re: Gas Mileage... when can you expect better?? (roykim)

04 T6 with 38K. We get 13.9 with 99.6573% city. I'm still waiting for the break- in period to end. I think its at 45K <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/rolleyes.gif" BORDER="0">
 

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1200 miles here<p>16 mpg city, 21 mpg hwy.<p>I am really surprised how much gas can suck a 2.5T engine.
 

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Re: Gas Mileage... when can you expect better?? (momscar)

'04 2.5T w/34K. Average about 18.5 around town and lucky if I break 20 on hwy. Once got 23.5 but haven't seen that in a year. It is a heavy vehicle and me having a heavy foot doesn't help.
 

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Re: Gas Mileage... when can you expect better?? (david)

Gas mileage is inversely proportional to the weight of your right foot.<p>By carefully managing the car's energy, you can get much better mileage. For example, when starting from a stand still, do not jam the gas -- instead, ease on the gas and let the speed build up slowly.<p>Braking also affects mileage. Try to plan your braking ahead of time and instead of using the brakes, <i>coast</i> to a stop.<p>Of course, driving like this is not as much fun -- but you will get much better mileage.
 

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Re: Gas Mileage... when can you expect better?? (momscar)

In city: 19-20 mpg. Highway: 24-26 mpg. Use 90 octane where I live, 90-92 octane while traveling. Now at 54,000 miles; original discs and rotors, second set of tires with >50% of tread left (Michelins). <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/smile.gif" BORDER="0">
 

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Re: Gas Mileage... when can you expect better?? (rnb)

16 city, 21.6 highway.<p>It's a MY06 T6. It's alot better than my previous MY03 T6.
 

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Re: Gas Mileage... when can you expect better?? (T5_awd)

The T6 numbers are interesting, but be aware the question was about the 2.5T. Just mentioning that an extra cylinder, a second turbo and a 4-speed automatic might just change the equation a little...<p>Tom.
 

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A couple of questions come to mind:<p>1. What is your tire pressure? Running on the higher side of the allowable ranges will help.<p>2. What octane gas are you using? Using 93 versus 87 octane will show a noticable difference in mileage. In our 05 2.5T, using 93 octane is just barely more cost effective, IF we keep the acceleration in check.<p>3. Is the fuel you have significant additives; i.e. MTBE or Alcohol? Running alcohol free gasoline will help a great deal. Costco and others sell alcohol free gasoline. Check the pump. If there is alcohol in the fuel, it will be stated on the pump. They can run up to 10% alcohol, I believe. Alcohol runs cleaner, but has a lot less energy than gasoline, hurting mileage and performance.<p>I believe the "break-in" for mileage stabilization occurred around 10-12K miles on our XC90. We now have about 17k. On one 2 hour highway trip we recorded 24 mpg at 70mph, but usually my realtor/soccer-mom wife gets in the lower 17's on premium, with slightly pumped up tires and virtually all city driving.<p>Jack<BR><BR>
<i>Modified by jib at 7:36 AM 8-29-2006</i>
 

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Discussion Starter · #12 ·
Re: (jib)

Thanks for all the reminders about the tire pressure, etc. That said, usually the husband makes sure that it is "where it should be". He is a crash reconstructionist, and tire pressure is one thing that can affect safety, so he's on top of those things <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0"> <p>I have been using 89 octane, and will check the additives next time I fill up. I may have to change stations, which is np. I try to keep the acceleration in check, and I did notice a difference when using the cruise control recently. I had it set at about 75, so maybe I need to slow down a bit <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/rolleyes.gif" BORDER="0"> .<p>I also do mostly city driving, and most trips are within 2.5 miles of home.<p>So from what everyone has said, I guess I'm not doing all that bad. <p>I appreciate everyone's input.
 

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Re: Gas Mileage... when can you expect better?? (ig_mb)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>ig_mb</b> »</i></TD></TR><TR><TD CLASS="quote">Gas mileage is inversely proportional to the weight of your right foot.<p>By carefully managing the car's energy, you can get much better mileage. For example, when starting from a stand still, do not jam the gas -- instead, ease on the gas and let the speed build up slowly.<p>Braking also affects mileage. Try to plan your braking ahead of time and instead of using the brakes, <i>coast</i> to a stop.<p>Of course, driving like this is not as much fun -- but you will get much better mileage.</TD></TR></TABLE><p>I will heartily echo that sentiment. When gas began camping out at $2.40+ per gallon, my wife altered her driving habits. She still takes the back roads to and from work (40 mile round trip) which contains a number of stop signs and about 6 or 7 lights. She used to get around 17 mpg on this route. Now, with eased acceleration and gradual stops she consistently gets around 22 mpg. On the highway we get about 24. <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0">
 

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Re: 2.5T gas mileage (momscar)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>momscar</b> »</i></TD></TR><TR><TD CLASS="quote">I have been using 89 octane, and will check the additives next time I fill up. I may have to change stations, which is np. I try to keep the acceleration in check, and I did notice a difference when using the cruise control recently. I had it set at about 75, so maybe I need to slow down a bit <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/rolleyes.gif" BORDER="0"> .</TD></TR></TABLE><br>Mileage will plummet over about 55 mph because of wind resistance. Grades also have a big effect, so that mileage on a trip to altitude will be much worse than the return trip--not a factor where you live, I suppose! <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/wink.gif" BORDER="0"> Also, for those of us in the snow zone the mileage nosedives in the winter.<p><TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>momscar</b> »</i></TD></TR><TR><TD CLASS="quote">I also do mostly city driving, and most trips are within 2.5 miles of home.</TD></TR></TABLE><br>That <I>kills</I> mileage because the engine is often running cold. Plus, the stop-and-go of city driving means you are burning fuel but not moving much. With a little practice you can predict your gas mileage from the average speed readout. <p>Note that slow acceleration and deceleration will not only benefit fuel economy but will make the brakes last longer, too.
 

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Re: Gas Mileage... when can you expect better?? (ig_mb)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>ig_mb</b> »</i></TD></TR><TR><TD CLASS="quote">Gas mileage is inversely proportional to the weight of your right foot.<p>By carefully managing the car's energy, you can get much better mileage. For example, when starting from a stand still, do not jam the gas -- instead, ease on the gas and let the speed build up slowly.<br></TD></TR></TABLE><p>BMW Did a study of this in the late 70's or early 80's that showed rapid, almost full throttle, acceleration to cruising speed followed by a sharp throttle let off proved to be MORE efficient than accelerating slowly. <p>Of course, your results are going to depend on your ratio of accelerations to cruising, but it was an interesting point nonetheless.
 

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Re: Gas Mileage... when can you expect better?? (momscar)

Our '06 V8 is consistently getting 23 on the highway; cruising at 70 with the cruise control on. The six speed transmission and power of the V8 allows for low rev highway cruising. In town, especially with my wifes heavy foot ( she LOVES the V8! ) mileage drops to about 16 - 17.
 

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Re: Gas Mileage... when can you expect better?? (borgron)

flat out cruise 65mph hwy summer 24-25, winter 21-23<p>6 passengers, luggage, 37k, 2.5t awd
 

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I've noticed in both cars that with all this corn gas around town my cars mileage has dropped by 3 or more mpg. My honda odyssey gets like 16 if I'm lucky now and it was much better.
 

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Re: (Guinny_Ire)

Yep. E85 is not as energy efficient as gasoline. Less mpg at more cost - and there's some opinion that it doesn't burn much cleaner than gas.
 

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Re: (1sttimevolvo)

On the 2006 <br>18 mpg in summer with around 8 mile roundtrips city<br>22 mpg highway, 80mph for around 75% of the trip, 72 mph for the rest.<p>Last fillup after highway trip, 500 miles to empty!<p>2003 had better gas mileage, this one never really broke in.
 
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