How do I troubleshoot my Audi A1's engine misfire?

Recently, my Audi A1 has been experiencing an engine misfire. I've noticed a decrease in performance and more frequent stalling. What could be causing this issue and what steps should I take to address it?

Hi Karen, an engine misfire can be caused by a number of factors, such as a faulty spark plug or ignition coil, clogged fuel injectors, or a dirty air filter. I recommend checking these components first to see if they need to be replaced or cleaned. You can also have a mechanic perform a diagnostic test to pinpoint the exact cause.