Skip the auto shop - Our mechanics make house calls

Q: Getting poor fuel mileage lower than listed

asked by on

I bought my 2013 Nissan Rogue because my Titan was using too much gas getting around. However, I am extremely disappointed at the fuel economy I've seen with this vehicle. It's supposed to get 27 MPG on the highway but I've never had better than 21 MPG, even on long, traffic-free drives. I barely have 8,000 miles on this car. Is it going to be like this forever?

A: Fuel economy has many influences on it whic...

Fuel economy has many influences on it which can raise or lower the MPG. Are you calculating fuel economy 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 trip on the highway and see what it reads. When you are idling for any period of time, this will cause a drop in fuel economy. Fuel economy will 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

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Loss of power few minutes after starting the car.

Hi there. Actually, the OBD-II error code you listed, P0233, is a generic OBD-II code that is triggered when the engine control module (ECM) detects that the secondary circuit to the fuel pump has an intermittent voltage when the fuel...

Q: I want to disable ABS and traction control on my car

I would not suggest disabling your ABS at any time, as it compromises vehicle performance and safety. As for you traction control, you should be able to turn it off manually using the dash mounted button. Your owner's manual will...

Q: Why does my car shake when I break and why does it sound "old" in cold weather after warming up?

The hard starting in cold weather is almost certainl due to a failing battery. A borderline battery can often be pushed over the edge by cold weather. As far as the braking issues is concerned, the most likely cause is...

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...
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 to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...