Q: Poor gas mileage 2013 Hyundai Sonata

asked by on

My 2013 sonata gls is getting 16-20 mpg with mixed city and highway driving. I always have active eco on and leave the car in normal automatic and not sports mode. I have a k&n typhoon air intake installed. I dont drive sporadically, i dont accelerate or brake hard. My car just passed its VA emissions test. Could my car just need a service or could it be something else? Also i purchased the car through usaa in October of this year.

My car has 30000 miles.
My car has an automatic transmission.

Hello - if your car passed emissions testing, and the Check Engine light is NOT on, your vehicle is at least passing the on-board diagnostics. Many other factors can affect fuel mileage however, tire pressure, clogged fuel filter, short trips vs longer trips, cold weather hurts fuel mileage. etc. I would recommend a vehicle inspection to determine if there is some other factor preventing better mileage by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Poor gas mileage 2013 Hyundai Sonata

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: Car idle is jumping up and down during daytime but not at night or when daylight fades

What you are describing sounds like a dirty or failing idle air control valve. The idle air control valve monitors the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and...

Q: Front end makes a grinding noise when I turn. Is that something to do with the rack and pinion steering?

Hi there. The noise sounds like the wheel hub bearings are grinding as you are turning. Lift up the vehicle and put all the wheels off the ground and spin the front wheels. Listen and feel the wheels for any...

Q: The speedometer, odometer, & mileage gauges are not working.

This is likely related to what is called a speed input/output shaft sensor which is a sensor mounted down on the transmission that monitors the speed of the output shaft of the transmission. This is relayed to your ECU which...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...