Q: My car consumes fuel excessively

asked by on November 02, 2016

My car has the check engine light on and it consumes fuel excessively.Though its emission at the exhaust is pretty okay.
My car has an automatic transmission.

Hello there. Many faults could cause your vehicle to consume excessive fuel. The most common faults are a misfire condition, a bad mass airflow (MAF) sensor, a fuel leak, a vacuum leak, a faulty oxygen sensor, or an exhaust leak. A qualified technician, such as one from YourMechanic, will be able to inspect your vehicle, determine why you are getting poor fuel mileage, and make any necessary repairs to resolve the issue.

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・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Car alarm seems to prevent motor from turning on
Hello. If this is the factory alarm then you need to try another key as yours may not be registering. You can also try unlocking and locking the driver side door over and over a few times to see if...
The car cut off
Hello. The car model will help us narrow down what to look for. Are there any lights that turn on on the dash when starting the car? Do any interior lights turn on? If nothing turns on, there is an...
Throwout bearing fork problem
Hi, if there is no fluid leaking from under the car then the linkage has an issue somewhere. All of the components in the clutch linkange are susceptible to wear and tear over the years and should be inspected. A...
Drove car through deep puddle and now it makes a loud noise when accelerating
How is the car driving other than the noise? If it's running poorly, this could be a very serious problem and you should have it checked as soon as possible. Sometimes when driving though big puddles (https://www.yourmechanic.com/article/how-to-check-for-water-damage-in-a-used-car), water can get...
Car stalls when I fully brake after I drive
Hey there. This is a common sign of a failing idle air control valve (https://www.yourmechanic.com/services/idle-control-valve-replacement). The idle air control valve monitors the air intake as it is mixed with fuel prior to being injected into the engine. This valve is...
I need the torque specs for my motor mounts
Hi, thanks for writing in about your 2005 Nissan Altima. The front motor mounts on your Nissan Altima should be torqued to ~65-77ft lbs. As you know, this can be a bit of a tough job in some cases. In...
How can i disable the anti theft system, the light keeps blinking?
Hi there. Aftermarket alarm systems can create problems, typically from poor installations. The vehicle's wiring harness is usually tapped into and removal of the alarm system is more than just pulling a fuse. Most aftermarket alarm systems are installed under...
Some of the time my 2013 Chevrolet Malibu will not start.
Hello. If you are getting a check engine light along with a no start, but there are no codes then you may have a computer issue or a voltage problem. I would need to know if the engine will crank...
I have a 2001 BMW 325i. It overheated, engine shut down. When cooled down (24 hours), while water poured in the reservoir I could
I'm not clear on where you see your leak, but if it is in the radiator tank itself, that will mean you at least need a radiator. If the car ran hot until it shut off, there may have been...

Related articles

Symptoms of a Bad or Failing Injector Control Pressure Sensor
Common signs include starting issues, engine misfires, the Check Engine Light coming on, and a decrease in power, acceleration, and fuel economy.
How Long Does a Throttle Body Temp Sensor Last?
The The throttle body is an important part of your vehicle and should be monitored regularly. The throttle body temp sensor is a sensor that is mounted on the throttle body. It monitors the temperature of the throttle body and...
What Does the Low Fuel Level Warning Light Mean?
The low fuel level light warns you when your car is nearing an empty tank of gas. It should be refilled before driving several more miles.