What are the most common issues encountered with the Ford Focus engine?

I have heard from friends that their Ford Focus has had some engine troubles in the past. As an owner, what potential problems should I be aware of and how can I prevent them?

As a mechanic, I have seen many Ford Focuses with engine issues. The most important thing is to keep up with regular maintenance, such as oil changes and tune-ups. Also, be aware of any strange noises or changes in performance, as these could be signs of a bigger issue.

I have owned a Ford Focus for over 10 years and have never had any issues with the engine. Just make sure to follow the manufacturer's recommended maintenance schedule and you should be fine. Also, avoid aggressive driving and keep an eye on the dashboard for any warning lights.

One common issue with the Ford Focus engine is a faulty ignition coil, which can cause misfiring and decrease in fuel efficiency. If you experience any of these symptoms, it's best to get it checked out by a professional as soon as possible.