Skip the auto shop - Our mechanics make house calls

Q: Very low fuel efficiency

asked by on

Trying to figure why I only get about 14 miles to the gallon when the average is about 24

My car has 39087 miles.
My car has an automatic transmission.

Your mileage is low compared to the EPA rating. Your vehicle was sold with a 3 yr/36,000 mi basic, 5 yr/60,000 mi powertrain warranty. In the event that there is an engine or transmission problem that accounts for the low fuel efficiency that you are experiencing, you should make a warranty claim to see if there is something that the dealer can do to resolve this.

You can maximize mileage by: keeping the tires adequately inflated; ensuring vehicle wheel alignment is correct; check for stuck brake caliper(s); maintain consistent vehicle speed; make sure engine temperature is in normal range and not too low due to a stuck open cooling system thermostat; check oxygen sensors as worn out or faulty oxygen sensors will cause higher fuel consumption; check for worn out spark plugs; low engine compression due to mechanical defects; slipping components in the transmission; dirty or leaking fuel injectors; defects in EGR system; exhaust restrictions; and excess weight in vehicle. If mileage does not improve after verifying all of the foregoing, or if you simply want all the foregoing inspected, please request a vehicle fuel efficiency diagnostic and the responding certified mechanic will get this issue investigated and resolved for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you

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!
  1. Home
  2. Questions
  3. Very low fuel efficiency

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: Anti Brakes light comes on and cruise control quit working at the same time.

Hello there, the ABS and cruise control systems work together and any fault with the ABS will disable the cruise control. The most likely causes of the ABS light is an issue with the control module, ABS sensor, or low...

Q: Traction Control System

The traction control system monitors the steering stability of the vehicle and engages when loss of traction has been detected. This is done by the use of electronic sensors at each of the four wheels that communicate with the Powertrain...

Q: What does the AVG MPG feature in the message center mean?

Ever wonder just how good your car’s fuel economy is? Have you tried to measure it using math on your own? If so, you’ve likely found that your results don’t match up with how much gas your car burns on...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...