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Hey Guys...

I know there's threads out there about the Tucson's fuel economy...but I wanted to know if you guys had a favorite highway speed that provides a balance between fuel economy and speed.

Yesterday, I found if I travelled at 110 kmh, it returned 7.6 L/100km = 31 mpg. Not great.

Anyone have a favorite speed/economy combo? I can only achieve the theoretical 6 l/100km if I'm travelling 80 km/h...not going to cut it on the 401.
 

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QUOTE (lil_ochef @ Jul 12 2010, 04:14 PM) index.php?act=findpost&pid=341127
Hey Guys...

I know there's threads out there about the Tucson's fuel economy...but I wanted to know if you guys had a favorite highway speed that provides a balance between fuel economy and speed.

Yesterday, I found if I travelled at 110 kmh, it returned 7.6 L/100km = 31 mpg. Not great.

Anyone have a favorite speed/economy combo? I can only achieve the theoretical 6 l/100km if I'm travelling 80 km/h...not going to cut it on the 401.
I had to look up the KM to miles per hour calculator = 68.35 mph. I think, I've found that 70mph is a sweet spot for best mpg on the highway myself.
So whats wrong with 31mpg? according to the sticker, 31mpg is the posted max figure for mpg on a FWD Tucson, 28mpg is the posted max mpg on an AWD Tucson.
Be thankful you don't have a 2005-2009 Tucson V6 that never got better then 23-24mpg on the highway, like my 2005 Tucson LX, and that was with full synthetic oil, & a K&N air filter.
 

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My driving is probably considered fairly rural; it's mostly highway where I travel 65-70mph, and the little bit of "city" (it isn't really) is done at about 40-50mph. I get around 27mpg (this most recent gas tank is at about 25.5mpg though) doing that.

Somewhere in the manual listed 60 mph as the max speed before mpg starts to suffer.
 

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Simple physics. The power required to overcome wind resistance is an exponential relationship; double the speed and the power required is increased by a factor of 4. Triple the speed and the power required goes up 9X. Best mpg would be achieved at the lowest speed that allows the transmission to shift into its highest gear. Most people can't/ won't drive at that slow of a speed, so everyone rationalizes what is the best speed.
Still can't repeal the basic laws of physics.
 

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The "sweet spot" for most vehicles - especially taller vehicles with chunky undercarriages - is around 80 km/hr. Every increment of speed above that is felt immediately in the wallet.

PS: 7.6 litres/100km at 110 km sounds great in my book! My Santa Fe 3.3 sucks back 9-10 litres/100km at that speed. :blush-anim-cl:
 
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