What causes a rough idle in an Audi A4?

Recently, I've noticed that my Audi A4 has been idling rough. What could be causing this issue and what should I do about it?

There could be several potential causes for a rough idle in your Audi A4. It could be an issue with the fuel injectors, spark plugs, or even the air intake system. The best course of action would be to take your car to a reputable mechanic and have them run a diagnostic. They will be able to accurately pinpoint the root cause of the issue and provide proper repairs.

One simple solution for a rough idle in an Audi A4 is to check the spark plugs and replace them if necessary. Over time, spark plugs can become worn and can cause the engine to run rough. This is a relatively easy and inexpensive fix that can improve the performance of your car.

Another common culprit of a rough idle in an Audi A4 is a dirty or clogged air filter. The air filter helps regulate air flow into the engine, and if it becomes too dirty, it can impede performance and cause the engine to idle roughly. Make sure to regularly check and change your air filter to maintain optimal performance.