My kia sportage 2011 consume more gasoline

Bad carberator or needs a carborator adjustment.

Could also be dirty air intake.

Yes.

i have a dodge that does the same thing... when you find out let me know!!

FOR oil leak issue and other problems you mentioned check the following help links:---

Radiator leaking? http://repairhelpcenter.blogspot.com/2011/12/radiator-leaking.html

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consuming more fuel? http://repairhelpcenter.blogspot.com/2012/01/toyota-tercel-consuming-more-fuel.html--------- How to maximize fuel economy on your vehicle? http://schematicsdiagram.blogspot.com/2011/11/how-to-maximize-fuel-economy-on-your.html

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Check Engine Light On car? http://schematicsdiagram.blogspot.com/2011/06/check-engine-light-on-car.html

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Common Causes of Car Oil Leaks?

http://schematicsdiagram.blogspot.com/2011/12/common-causes-of-car-oil-leaks.html

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Troubleshoot Car Oil leak?

http://schematicsdiagram.blogspot.com/2011/12/troubleshoot-car-oil-leak.html
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Car oil leak?

http://schematicsdiagram.blogspot.com/2011/12/car-oil-leak.html

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Car oil leaks from valve cover gasket?

http://schematicsdiagram.blogspot.com/2011/12/car-oil-leaks-from-valve-cover-gasket.html

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Rear oil seal leaking?http://schematicsdiagram.blogspot.com/2011/12/rear-oil-seal-leaking.html

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leaking oil from oil pan?
http://howtobyme.blogspot.com/2011/11/kia-sportage-leaking-oil-from-oil-pan.html

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leaking oil from timing cover?http://technoanswers.blogspot.in/2012/02/toyota-corolla-leaking-oil-from-timing.html

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How to Check Differential Oil Leaks and Replace Oil
http://schematicsdiagram.blogspot.com/2011/07/how-to-check-differential-oil-leaks-and.html

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Oil leaks from air filter on ford?http://technoanswers.blogspot.com/2012/01/oil-leaks-from-air-filter-on-ford.html

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---------This will help. Thanks.

5 X.20=1.00litre

If there is a serious loss of power, look at the exhaust manifold. There should be a flange where the exhaust expands out. This is the "pre cat" and has tendency to plug and create fuel consumption issues and power issues. What else is going on with it?

That fuel consumption is a bit heavy, but not excessive, depending on the driving conditions. In heavy traffic and slow town driving with a lot of stop starts it would be acceptable but on the open road in 2 wheel mode it would be excessive. Kia do not seem to manage much better than about 8-10 l/100km, even on their sedans.

Fuel injector are worn out they. Might be dribbling as a bigger engine it won't stall or flood it raises the idling making you feel it's power but consuming more fuel

javlinenterp , Hi mate, I have just replaced mine today in my 2000 Sportage 2 liter DOHC Sportage. It is not difficult, just time consumeing. Remove the main breather pipe and throttle cables etc, then undo the 6 bolts holding the black plastic cover in the middle of the rocker cover. Then undo the 2 bolts secureing each of the 2 spark coils and pull up the plug connerctors. The plugs are about 8 inches down inside the head. Take them out and put in the new ones, Job done. Cheers Jay Ar, Carnarvon West Aust.