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Buick Enclave Real World MPG

14 messages,  Last post on Aug 28, 2009 at 12:46 PM

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#12 of 14 sunroof wind deflector rattles when closed by paulh5 Jul 01, 2008 (1:09 pm)
The wind deflector rattles when the sunroof is closed. The wind deflector is a piece of plastic that springs up when the sunroof is opened. When the sunroof is closed this plastic is vibrating when I drive. I can push my fingers up into sunroof cavity, and press down on the wind deflector - and the sound goes away. I'm thinking of placing some foam weather stripping in there. Has anyone else had this problem?   So far no water leaks, though:)
#13 of 14 Mileage by fisherman59 Aug 27, 2009 (1:38 pm)
We bought our Enclave in Jan 09, it has front wheel drive and used primarily by the wife driving to work and back. 50 miles per day Interstate driving. We've taking it on long 500 miles + trips and have only gotten in the best world 21.5 MPG. Trip speeds are usually around 70 mph never higher than 75 mph. Have read reviews where owners are getting 23 to 25 MPG and would like to know the secret to improving mileage. We love the car!! Replies to this message: wlbrown9 (Aug 28, 2009 12:46 pm)
#14 of 14 Re: Mileage [fisherman59] by wlbrown9 Aug 28, 2009 (12:46 pm)
Replying to: fisherman59 (Aug 27, 2009 1:38 pm) I have an '08 Outlook XR FWD. My average for the past week, about half Interstate have city streets but not much stop and go is hanging at 20.3 MPG. But when I can catch some nice flat Interstate without a headwind and ease along at 65-70 I can get 23-24 for awhile. Any hills or headwind and it will drop down to lower than that. I've decided that if I manage the throttle I can get 1-2 MPG more than using the Cruise Control, especially on a stretch with some hills.   One time I headed West out of Memphis to take mother home in eastern Arkansas. Had a 25+ MPH headwind. The MPG dropped down to around 16.5-17. On the way back with a tailwind the MPG climbed steadily and IIRC ended up over 20 by the time I got home.   I've decided that 5th and 6th are overdrive and double overdrive. If you can keep it easing along in these, great mileage. If you have to drop down to maintain speed you can watch the MPG on the DIC drop pretty quick. Recently on my city street stretch with 40-45 mph speed limit, I have started using the thumb button on the shifter to kind of manage the RPMs. Otherwise once I get up to 40-45 in 5th-6th it kind of seems to lug and wants to downshift easily. I seem to be able to smoothe that out by shifting up and down as needed until 45 or so and sometimes will even downshift at a higher speed on an incline.   I still like it and think it gets great mileage for a 7-8 passenger. Wife went to Gulf Coast a couple of weeks ago with her S-I-L in their Yukon and was talking about how much it cost them for gas.   Bill

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