Skip the auto shop - Our mechanics make house calls

Q: Exssesive fuel consumption

asked by on

my 2008 toyota sienna is consuming way too much fuel... I don't see any leaks anywhere, what can the problem be? pleaseeee help!!

If you are suddenly having poor fuel mileage then you should also have a Check Engine Light illuminating. The light will most likely be indicating a problem with a sensor like an O2 sensor or a mass air flow sensor.

If you do not have a Check Engine Light on then you may just need to do some vehicle maintenance that will help the vehicle get better mileage like: replacing the air filter, cleaning the mass air flow sensor and throttle body, replacing spark plugs and make sure all the tires have correct amount of air every month. These simple services can increase your mileage if maintained on a regular basis.

If you’d like to get the car looked at, consider YourMechanic, as a certified technician can diagnose your potential Check Engine Light or perform any of the aforementioned maintenance tasks as necessary. Good luck!

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. Exssesive fuel consumption

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: Where is temperature sensor

The engine coolant temperature sensor should be located on the radiator hose fitting on the front of the engine. The connector is locked in place by a clip lock on the connector housing that needs to be depressed at the...

Q: Check Engine Light is on - 2007 Toyota Sienna

This code relates to a heated oxygen sensor which is a unit inside your exhaust system that reads exhaust gases and relays this information to the car's computer. The computer uses this information to make adjustments to fueling. This sensor...

Q: CVT problem on Maxima

This would depend on exactly what your transmission is doing. Depending on the symptom the TCM may have an issue but it could also be an internal transmission fault. I would recommend having your transmission inspected by a qualified transmission...

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...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.