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?

A: You generally get bad fuel mileage for eith...

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

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Engine light and rpm increased while driving

This is a common sign of 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 with fuel prior to being injected...

Q: An EGR valve has an error and my engine is stalling out when started.

Hi there. Check the power to the Exhaust Gas Recirculation (EGR) Valve and see if there is a voltage reference. If there is a voltage reference, then back probe the EGR Valve wiring harness plug with the engine running and...

Q: bogging

Hi, thanks for writing in about your 1999 Mitsubishi Eclipse. I would recommend that you open your air filter to make sure that it is dry. If you drove your car through a car wash while the car was on...

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...