I can safely say diesel car is saving me a lot of money. I just renew my car tax for the year and it only cost £20, where as previous car a Nissan Mica cost £110 for the year.
Also the Micra cost £50 a week for petrol, where as my new Citroen costs £30 per week. Happy days.
Here another fuel saving tip only have your roof rack on the car if its needed and make sure you don't carry unnecessary weight in your boot as both can cause you to use more fuel.