Last post on Sep 27, 2010 at 10:42 AM
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Toyota Sienna, Van
#19 of 250 Don't Be Disappointed
Jan 11, 2007 (12:32 pm)
Toyota's Sienna (from at least 2003 and newer) have a chip in the system that 'learns' the driver's habits the first 7K miles on the vehicle. You will see a better idea of what your MPG will be after this first 7K miles. In fact, after the initial chip 'break-in', if you switched to a heavy-footed driver (or Granny-Driver), you would not see a valid 'change' in the MPG until several thousand miles later when the chip again 'learns' the newest driver's habits.
My 2005 gets about 20.1 - 20.5 (highway and city) figured out every time I get gas. I've got 33K miles. It's a FWD. This is higher than the overhead digital thingie shows. Long trip (went to Seattle from Dallas this past summer)....fully loaded....kids and all that crap...and got between 25-26....thru the mountains, trading off drivers, 80+ MPH and craploads of traffic during some unknown town's 'rush hour'. Great touring car. Not cute...but you can't have cute when you have kids.... Six more years...when the last one's out.....RX8 here i come.
#20 of 250 2006 CE FWD at 3,000 mi.
Jan 12, 2007 (11:13 am)
I haven't taken a trip, or run a tankful or even half tank, freeway only yet. That is very unusual for me, as I love to cruise the Hiway/Interstate. Am running 50-50, or 60-40, street-hiway. Just under 3,000 miles, getting
21-22 mpg so far. Quiet and smooth, but am a bit red faced about a few times have had to pull out and back in again to park properly.
#21 of 250 2006 Sienna LE overall average dropping in winter
Jan 24, 2007 (3:16 pm)
Overall average at 9,200 miles is now 24.6 MPG...down 1 MPG from 25.6 MPG at first of October.
One long round trip was 28.8 MPG and another was 27.8 MPG. Best with 2002 T&C LX was 28.2 MPG for a round trip to and from the same places.
#22 of 250 2006 sienna mileage drop in winter
Jan 24, 2007 (4:05 pm)
I have no idea where you live,but in the north east,and other parts of the country they gasoline providers mix the fuel different from summer to winter.This will drop your mileage some,and also with the denser winter(read cooler) air you will be making more power,and therefore using more fuel.
06 Sienna LE(hers)
78 Mazda RX-7 GS
74 Mazda RE/PU
#23 of 250 2007 Limited
Mar 18, 2007 (12:56 pm)
We have 12K+. The car's computer says 22.2. Most of our driving has been triping at 70mph+ or city driving the Mesa area. We are really satisfied with the mileage because most of our driving has been in tough conditions for getting good gas mileage.
Our only knock about this vehicle is the driver and passenger arm rests not being adjustable. We are in discussion with Toyota hoping the result will be usable arm rests.
#24 of 250 My MPG stinks!
Apr 09, 2007 (4:44 pm)
I must have a lemon. My 05 AWD limited gets no better than 17.5 according to the van's computer. I have 23,000 miles on it and it sucks gas. I can't understand how other people are getting 23-26 mpg. My van is nowhere near that and I am not holding my breath for better numbers at 23,000 miles.
#25 of 250 Road Trip MPG
Apr 27, 2007 (5:45 pm)
Hello All. Just got back from a 1,900 mile trip. Did a fair share of two-lane roads, including a huge amount of 15 mph corners on Hiway 1 from the Redwoods to the North end of the Golden Gate, among others. Why I am posting is because I got what I would consider GREAT mileage!! Low of 20, which was less than half a tank, and a high of 30 mpg, which was more than once! Most common mileage figure was 26-28, with the nod going to the 28. I could go on and on and give details, but just want you to know this is a true story, and not about 55-60 mph no-grade freeway driving..
This is the kind of mileage I was hoping for when I purchased the van, as my other new Toyotas (4) since 2001, all 4 cyl, 2 w/auto 2 w/manual, regularly exceeded the window sticker. I was starting to wonder about the Sienna (22-23 has been the norm), especially with gas being so high. Seattle area is even higher than most. I use Premium, too. $3.50 per gallon up this way today...
Have 10,750 on the Odometer now.
#26 of 250 Re: Road Trip MPG [bearcrkrd]
Apr 29, 2007 (8:31 am)
Congratulations. My 2006 Sienna LE got 29.5 MPG on the last round trip compared to 28.8 MPG on same trip last year. I set the cruise at 66-67 MPH when on the road but obviously must drive 75-80 MPH when on the Los Angeles metropolitan area freeways.
It now has a 24.2 MPG overall average for 11,600 miles. It got as low as 13.1 MPG in the very cold weather when there was no open road driving. The very best it got was 36.0 MPG at 55 MPH during a round trip test on an almost flat portion of highway.
I use 85 octane in the Rocky Mountain area (Colorado, Wyoming, Utah), put 91 octane in when I get to lower altitude and then use 87 octane until we get back to the high altitude.
All of the above mileage is calculator computed. The overhead trip computer reads an average of about 1 % higher than the calculated mileage.
#27 of 250 Re: Road Trip MPG [hansienna]
Apr 29, 2007 (11:13 pm)
Forgot to mention, mine is a 2006 CE. I've had the windows tinted, put on the little Toyota plastic splash/mud guards, both on first day I had it, last Nov. The latest, and probably last, is the chrome exhaust tip. Made me feel 10 years younger!
#28 of 250 Re: My MPG stinks! [mleonardo]
Apr 30, 2007 (11:38 am)
I'm right there with you on the lousy gas mileage. I have the 2006 LE and in the beginning had pretty good mileage. Then it started getting worse which correlated with an accelerator/brake sensor issue that Toyota repaired. Mileage improved. Now, all of a sudden my mileage is around 13 MPG!!!! (according to computer) It seemed to be revving while braking, so I took it in. They claim no problem and that the computer is not so accurate. (unrelated--computer is also not giving me the idiot light on low fuel until it says I have about 6 miles left) Weather cooled down and I kept track of mileage "the old fashioned way" and it correlated with computer 17 MPG (all city and I have a heavy foot)and I did not have the revving issue. Now it's warmer and mileage is around 14-15 MPG. That's with some highway driving thrown in. The revving issue has returned as well. Thus why I'm on the boards looking for an answer. OH, and I live just north of the Mexican border in Texas, so our fuel does not change with the seasons.