How can I improve the performance of my Ford Transit Custom?

I've noticed that my Ford Transit Custom is not running as smoothly as it used to. What are some things I can do to improve its performance?

One thing you can do is regularly change the oil and filters in your vehicle. This will help keep the engine running smoothly.

Another important factor in maintaining performance is checking and replacing spark plugs when needed. This can greatly improve engine performance.

Make sure your tires are properly inflated and balanced. This can greatly affect the handling and performance of your vehicle.