Why does the engine of my Audi A6 sound rough?

I have noticed that my Audi A6's engine has been sounding rough lately. What could be the possible reasons for this?

There could be multiple reasons for the rough engine sound in your Audi A6. It could be due to dirty air filters, faulty spark plugs, or low engine oil. It is recommended to get your car checked by a certified mechanic to determine the exact cause and get it fixed.

One common reason for a rough engine sound in Audi A6 is a misfiring cylinder. This can be caused by a variety of reasons such as a faulty ignition coil, clogged fuel injector, or a bad oxygen sensor. It is best to take your car to a qualified technician for a thorough diagnosis.

If your Audi A6 has been running on low quality fuel, it can also result in a rough engine sound. It is important to use high quality fuel to ensure smooth functioning of your engine. Additionally, you can also try using fuel additives to clean any residue buildup in your fuel system.