Question about 2011 Hyundai Elantra Touring
I live at 7000 ft in Colorado and constantly get 30 to 31 mpg hwy. I recently took a trip to Nebraska which is much lower in altitude and when I got to Nebraska my gas milage dropped to 26 mpg when I returned my gas mileage went back to 31
I would guess your car was built to the Emission Standards
for your state,altitude etc
Still a big drop in mpg
If you ever moved, you may need your computer software
reflashed for lower elevation
I would guess the MAF Sensor was out of it's range
Check to see if any codes were stored
Need professional scanner
Look at freeze frame data unless you have been back for weeks
Posted on Mar 20, 2014
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Posted on Jan 02, 2017
we need a trouble code to at least where to start helping you. one thing that is vital is a BARO reading of your location(call the local airport, should be approx 29-30) and the BARO PID reading of your truck,it should read approx 155-156 ....if it reads like 140 the MAF sensor will need to be replaced.
Posted on Sep 25, 2009
The factory tends to use lightweight oil,to increase fuel mileage,
not good for the life of the engine,if heavier oil was put in place,mileage could drop,but not much,maybe 1 mpg,are you sure it's not because of
extended warm up times or more idling than usual?
Posted on Feb 18, 2012
replace air filter,clean fuel injectors,check keep right tires pressure,different types tirers cause excessive fuel consuption,4WD drive vechicle will burn more fuel driving short distances.stopping then accelerating cause more gas for power to vechicle in motion.
Posted on Feb 21, 2013
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