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 1,000 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
  1. Home
  2. Questions
  3. Fuel economy getting worse on a 2000 Opel Astra G

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: Check engine sign on

Most Check Engine Lights are illuminated when an error code is triggered and stored in the ECM. Even if you've repaired what was broken or damaged, you still need to clear those codes in order for the light to go...

Q: Does camshaft position sensor affect in any way the fuel consumption?! 2003 Mercedes ML350

Hello - yes, a failed camshaft sensor can negatively affect fuel economy. With a failed cam sensor, engine management reverts to a "fail safe" engine timing scheme which is less efficient than when all sensors are working properly. The symptom...

Q: Why does my engine stall so much?

Greetings and thank you for writing in with this question! Does the Check Engine Light illuminate when the vehicle stalls? If so, a certified mechanic (like those with YourMechanic) can scan the vehicle computer for codes. This type of stalling...

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...
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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...