Skip the auto shop - Our mechanics make house calls

Q: Fuel mileage is worse than advertised

asked by on

At only 30,000 miles, I'm noticing that my 2011 Hyundai Elantra is not getting the kind of fuel economy which Hyundai promised in the information given to me before buying this car. The dealership has offered to reimburse me a small amount via a debit card for fuel, but I just want the good fuel economy I was promised! Is there anything I can do to improve the mileage my car gets? My commute is very far and paying for all this gas is hitting me financially hard.

Fuel economy has many influences on it which can raise or lower the MPG. Are you calculating the fuel economy figure per tank or off the trip computer? The trip computer is a constant average that might be resettable (see owner manual). If so, reset it on your next long highway trip to see what it reads. When you are idling for any period of time, this will cause a drop in fuel economy. Fuel economy will also be reduced by speed, acceleration, poor tire psi and condition, the load inside the car, weather, and terrain. For example, driving 20 miles to work up a hill and never getting above 30 MPH will lower fuel economy. Highway mileage, in theory, means cruising at 60 MPH and during that time you will be close to what the rated MPG is. The EPA Fuel economy is measured under controlled conditions in a laboratory using a standardized test procedure specified by federal law. Manufacturers test their own vehicles—usually pre-production prototypes—and report the results to EPA. EPA reviews the results and confirms about 10%–15% of them through their own tests at the National Vehicles and Fuel Emissions Laboratory.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Steering wheel stiff when parking

Hey there. The two main components for your power steering system are the steering pump and the rack & pinion steering unit. If the power steering pump was run low on fluid for a period of time, it may have...

Q: excessive fuel consumption I put genuine spark plug and wire plug set it was 125 lm now 145 km per 20 liters?what is problem how c

Hello. It is difficult to get much better fuel economy then what you are currently getting. The only way is by driving the car easy and maintaining it. Using synthetic oil, a high flow air filter, making sure that the...

Q: Hyndai elantra P2196 P2096

Hi there. Typically these codes are caused by an exhaust leak, clogged injectors, or intake vacuum leak. If problems just happened to start after getting fuel, then you may have a purge valve leaking excessive fumes into the intake when...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.