Why does my Audi A4 engine misfire?

I've recently noticed that my Audi A4's engine has been misfiring, causing a noticeable loss of power. What could be causing this issue and how can it be resolved?

One of the most common causes of engine misfires in Audi A4s is due to faulty ignition coils. These can wear out over time and cause issues with spark plugs, leading to misfires. It's important to have these replaced by a certified mechanic to avoid further damage to your engine.

Another possible reason for engine misfires in Audi A4s is a clogged fuel injector. This can happen due to buildup of deposits or debris, restricting proper fuel flow. Regularly using a fuel system cleaner can help prevent this issue, but it may require professional cleaning to fully resolve.

If you've recently had a tune-up or replaced your spark plugs, it's possible that they were not properly installed. Make sure all connections are secure and that the spark plugs are the correct type for your Audi A4. Loose or incorrect spark plugs can also cause misfires.