Skip the auto shop - Our mechanics make house calls

Q: What factors affect fuel economy?

asked by on

What factors affect fuel economy?

A: Your Accord came with a window sticker that...

Your Accord came with a window sticker that explained the miles per gallon the car was rated for under different driving conditions, such as highway driving, city driving, and also provided a combined total. It’s important that you understand these are not definitive numbers – many factors affect fuel economy. These include:

  • Idling – The longer you idle, the more fuel you use without actually traveling any distance.

  • Hard Acceleration – Hard acceleration uses more fuel than normal acceleration.

  • Low Tire Pressure – Low pressure in your tires can reduce fuel economy (the engine has to work harder to turn the wheels).

  • Hard Braking – Sudden braking wastes fuel.

  • Cold Engine – Not letting your engine warm up to normal operating temperature before driving can reduce fuel economy.

  • Using the Air Conditioner – Using the air conditioner places an additional load on the engine, increasing fuel consumption.

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・Save up to 30%

Get a quote

What others are asking

Q: How do I set the clock?

Setting the clock is very easy. It requires just a few simple steps. Hold the “TIME” button until the numbers on the clock begin to flash. Rotate the “TUNE/SCROLL” knob on the right side of the entertainment console, until...

Q: I am burning WAY too much gas for the year and maintenance quality of the car

Hi, thanks for writing in. This may be a sign of a clogged catalytic converter. As you may already know, the catalytic converter converts toxic exhaust gases into less harmful pollutants that are suitable to be expelled into the atmosphere....

Q: Battery Light on

Hello! The Battery Light indicates that there is a failure in the charging system. This should be diagnosed and repaired sooner than later, as a failing charging system can leave you stranded. The charging system needs to be tested to...

Related articles

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.