What is the best way to increase the fuel efficiency of a Ford Puma?

I recently bought a Ford Puma and I love it, but I noticed that it consumes a lot of fuel. What are some tips or modifications I can make to improve its fuel efficiency?

Regularly maintaining your car, such as getting tune-ups and changing the air filter, can greatly improve fuel efficiency.

Using cruise control on the highway can help reduce fuel consumption.

Consider using a fuel additive that can improve the performance of your engine and help save fuel.