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Vans & Minivans Post Your Van Gas Mileage Here
1837 messages, Last post on Sep 12, 2009 at 12:19 AM
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07 Sienna, 8k miles All city, stop-and-go, extremely cold: 19.2mpg.  That stands in stark contrast to my peak of 34mpg on an all-highway trip.
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Replying to: ateixeira (Jan 24, 2008 8:15 am) My best long round trip (1360 miles) mileage was 29.2 MPG compared to 28.2 MPG for my 2002 Chrysler T&C LX on same 1360 mile round trip 2 years earlier. Maximum POSSIBLE round trip gas mileage with my 06 Sienna when driven at 55 MPH with moderate temperature, NO air conditioning used, no winds, etc. was 36.0 MPG. 
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Replying to: hansienna (Jan 24, 2008 4:13 pm) Current tank is better than the last one, about 25mpg so far.
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Replying to: ateixeira (Jan 25, 2008 7:40 am) Yes, you read correctly. The gas mileage was LESS than 11 MPG on last tank.
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Replying to: hansienna (Feb 09, 2008 12:21 pm) Mine has dropped with the extreme cold, too, but I'm still above 21 mpg right now. Are you taking shorter trips as well? Or idling it to warm it up?
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Replying to: ateixeira (Jan 25, 2008 7:40 am) What is your top / cruise speed while drive? How much of city vs highway driving represents the type of mileage your are getting?
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Replying to: roloj (Feb 11, 2008 2:04 pm) In the summer, we have a weekend getaway/beach condo, so we make lots of long trips, 3 hours each way. I consistently get better than 27mpg, usually 28 to 30 or so. Now it's cold and the place it closed up, so it's all around town driving, mostly short trips. We try to combine errands but most of the kids' activities are only a few miles away, so the engine barely warms up before we arrive. I'd say most trips are less than 5 miles, with a few longer drives mixed in. In town, on short trips, I've seen as low as 19mpg. A longer drive will increase the average mpg back up in the 20s, though, pretty quickly. I do not tend to go too fast - usually 65 in 55 zones, 70-75 in a 65mph zone, but there aren't many 65 mph zones here in MD. I'm probably going a bit slower than average traffic, though. What I've found is that the Sienna shifts to 5th gear at right about 45mph, and that's about where it gets the best mileage. RPMs are way low, about 1400rpm or so, just above idle. It can maintain speed on level ground, but on a hill it will have to upshift. 55mph is easier because it rarely shifts down. High 20s or even 30+mpg. At 65mph it almost never needs 4th gear, but mileage isn't as good - high 20s. I haven't cruised at much higher speeds for any extended period, this is a family car after all, not a top speed racer. 
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Replying to: ateixeira (Feb 11, 2008 11:39 am) I am confident the gas mileage will jump back up to 27-28 MPG on long trips.
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Replying to: hansienna (Feb 12, 2008 4:13 pm) |
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Replying to: user777 (Aug 12, 2007 5:12 pm) fill. reset the trip odometer. drive. stop for gas and refill, and divide trip odometer miles indicated by gallons filled. fill. reset trip odometer. do it again That is how I do it. I do not use or trust the overhead computer. I find it will give me way different readings if I set it before I get on the freeway than what it says if I set it after I get on the freeway. Setting it after I get on, it has shown it getting anywhere from 30-35 mpg. If I set it before getting on, it will show 19-23mpg. I get a true reading by doing it your way and it's never been over 25mpg. Dodge GC 3.8
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