Skip the auto shop - Our mechanics make house calls

Q: Fuel economy getting worse on a 2000 Opel Astra G

asked by on

I have a 2000 Opel Astra G. My fuel economy is starting to get worse. I've just had it serviced. What can I check first?

You generally get bad fuel mileage for either the air filter that is clogged or the MAF sensor that measures how much fuel goes in to see if either is dirty or needs to be replaced. Fuel injectors could be dirty. Watch my video "how to clean fuel injectors on your car." There are a a lot of things that can make cars get bad fuel economy but you’d want to check all of those things first. Now, it is a 2000, so you can have a data stream. Have a good mechanic plug in a scan tool and check the data stream. See if the sensor is working and see how the fuel injectors are firing. A mechanic can get a lot of information from the car’s data itself. If you’d like, a technician from YourMechanic can inspect your car to see how you can address any issues that may be causing poor fuel economy.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Engine is very strong on hard acceleration, but on light acceleration it misfires, also rough idle and smells way too rich.

This may be related to a faulty throttle position sensor or potentially a dirty or failing mass air flow sensor. The mass air flow sensor is a unit in the intake system that monitors air intake as it is mixed...

Q: My digital fuel mileage read out and is going up and down erratically

Most "fuel economy estimators" utilize the length of time the fuel injectors are open (we're talking milliseconds here) during each revolution of the engine while driving. As a result, small periods of acceleration or other load factors will have temporary...

Q: My front left tire screeches every time I turn the steering wheel

Your description could cover a number of things. If it makes the sound when the car is not in motion, you may have a problem with the power steering belt. If the sound only occurs only when the car 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...
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.