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Hyundai Santa Fe Significant Drop in MPG

8 messages,  Last post on Dec 28, 2008 at 9:06 AM

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What is this discussion about? Hyundai Santa Fe, Fuel Efficiency (MPG), SUV

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#5 of 8 Re: Significant Drop in MPG [pgatz] by jcwsbltd Dec 27, 2008 (7:53 am)
Replying to: pgatz (Dec 26, 2008 12:47 pm) Although you've not stated any previous mpg versus new mpg fiures,just "significant drop", there could be several reasons for the drop in mpg:   1. Such Low temps are causing the automatic choke to stay on longer or causing it to stick   2. The blend of winter gas is causing lower mpg   3. Someone re-set the trip computer mpg and it hasn't adjusted for mixed driving yet   4. Slower town speeds or more idling/warm up will significantly reduce mpg.   It all depends on what "significant drop" means - realistically in such cold weather you would be getting anywhere from 15-18 mpg in town driving - NOT what the trip computer says the mog is, as this is an average figure. I presume you are actually measuring the amount of gas you're putting in versus the actual trip mileage in between tanks? Replies to this message: pgatz (Dec 28, 2008 9:06 am)
#6 of 8 Re: Significant Drop in MPG [pgatz] by Bad08Sonata Dec 27, 2008 (9:48 pm)
Replying to: pgatz (Dec 26, 2008 8:28 am) Are you setting your emergency/parking brake between drives?   Maybe your parking brakes are dragging or are not completing releasing.   cold weather might be freezing lines Replies to this message: pgatz (Dec 28, 2008 9:00 am)
#7 of 8 Re: Significant Drop in MPG [Bad08Sonata] by pgatz Dec 28, 2008 (9:00 am)
Replying to: Bad08Sonata (Dec 27, 2008 9:48 pm) The car is garage parked, and I do not use the parking break for that very reason..
#8 of 8 Re: Significant Drop in MPG [jcwsbltd] by pgatz Dec 28, 2008 (9:06 am)
Replying to: jcwsbltd (Dec 27, 2008 7:53 am) I reset the the mpg trip computer with each tank of gas. I discount mixed driving from all highway driving tanks. However, when I know that the last tank was ALL highway driving and I got 16 mpg from that tank and the previous mixed driving was about the same, that's an issue.   I had the oild changed at a local place recently and I'm reading in other places on the forum about the uniqueness of the oil filter for the Santa Fe. I'm wondering if that place put the wrong filter in. Guess that means a trip to the dealer to find out.

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