With today's high fuel prices, it is enough of a struggle to keep your gas tank filled without having to worry about poor fuel economy as well. If a tank of gas isn't getting you as far as it used to, it may be time to replace your Audi A4 oxygen sensor. The A4 oxygen sensor is an important and often overlooked component of your engine that regulates the amount of gasoline your fuel injectors release.

If your Audi A4 oxygen sensor is not working, your engine will overcompensate by injecting too much fuel, because too little fuel can cause serious engine damage. This means you are expending more fuel to travel the same distance.

Outside of lowered fuel economy, other symptoms of a failing A4 oxygen sensor include loss of power and foul exhaust odor. Your Audi A4 oxygen sensor may be controlled by your car's computer, so a diagnostics test might be the only sure way to determine whether or not the A4 oxygen sensor is at fault. However, if there are no other problems that could be causing your reduction in fuel efficiency, the Audi A4 oxygen sensor is the likely culprit. Consult your manufacturer's recommendations for the replacement interval of your A4 oxygen sensor, and if you have not had it changed in a while, pick up a replacement Audi A4 oxygen sensor from our convenient online catalogue. Don't waste another tank of gasoline when you can restore your engine's fuel economy with a new A4 oxygen sensor. We will ship your Audi A4 oxygen sensor right to your door, so you don't have to plan a trip to the auto parts store.