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Vans & Minivans Toyota Sienna Toyota Sienna Gas Mileage
248 messages, Last post on Jun 04, 2009 at 7:11 AM
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Replying to: trademarkguru (Aug 21, 2008 8:08 pm) of your low MPG could be attributed to new engine break in but not of that magnitude. Something must be wrong, I would definitley make A LOT of noise with your dealer. I have seen several posts that referred to the accelerator sensor (commonly known as the throttle position sensor or TPS) as being out of adjustment, but this is just one possibility. I have included the following list of posts that refer to poor AWD fuel economy. Take these to your dealer. You are not alone and us AWD owners feel your pain, but you shouldn't have to feel THAT much pain. Keep us posted as to the outcome and good luck!! Discussion Title Date Author Comments Toyota Sienna Gas Mileage #218 08/21/2008 trademarkguru X Toyota Sienna Gas Mileage #179 05/09/2008 mleonardo X Toyota Sienna Gas Mileage #142 02/06/2008 gmui X Toyota Sienna Gas Mileage #141 02/06/2008 gmui X Toyota Sienna Gas Mileage #138 02/04/2008 gmui X Toyota Sienna Gas Mileage #137 02/02/2008 adeleon1 X Toyota Sienna Gas Mileage #131 12/06/2007 oeko X Toyota Sienna Gas Mileage #126 11/21/2007 metmdx X Toyota Sienna Gas Mileage #47 07/13/2007 beeman4u X Toyota Sienna Gas Mileage #44 07/13/2007 beeman4u X |
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Replying to: trademarkguru (Aug 21, 2008 8:08 pm)
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Replying to: dnbqee (Aug 22, 2008 11:25 pm) We tried a pure freeway test and for 100 miles at 70 mph, we got 14 mpg. Pretty lousy. I put super in just to see if it will make a difference this next time around, but I doubt it. I'll try the PCM reset when we go in, and I'll request that they check everything. I told him we could have bought a V8 and gotten better mileage in a large SUV. He did not really disagree. We bought the AWD because the EPA estimates were just 2 mpg off from the 2WD. I'll keep you posted, and thanks. |
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Replying to: beeman4u (Jul 15, 2007 4:02 am) When did your mileage open up, and did you ever find out what the problem was? What are you getting now? Your insights would be greatly appreciated. Thanks. |
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Replying to: adeleon1 (Feb 02, 2008 5:50 pm) When did it open up for you? Thanks.
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Replying to: gmui (Feb 06, 2008 12:07 pm)
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http://www.siennaclub.org/forum/index.php?showtopic=19383&hl=">link title To those experiencing poor mpg, it might be worth checking the rear brakes. If they're very hot after a long drive, they might be dragging. This post at siennaclub is from a guy whose rear brakes prematurely wore out at 20,000 miles. He suspects that they were dragging since the van was new, because after being worked on his mileage went up by 5 mpg.
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Replying to: ateixeira (Aug 11, 2008 9:12 am)
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Replying to: skynet (Aug 23, 2008 7:47 pm) How are your driving habits, though? Are you doing jack-rabbit starts, enjoying that 266hp engine a bit too much?  I have found that I can break 30mpg if I try, but you have to keep speeds down and practice other efficient techniques. Basically if you rarely use the brakes you've done well. That's highway, of course. In the city we never get less than 22mpg, but I'm still trying to be as efficient as I can, coast to a stop, again the less braking you require the less energy you've wasted. Also check tire pressures - 35psi at least!
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Replying to: ateixeira (Aug 27, 2008 11:33 am)
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