What is the difference between a diesel engine and a petrol engine? As a fuel substance, diesel is denser, slower to evaporate and easier to refine than petrol. These qualities make it cheaper, and more efficient in terms of mileage, than petrol. While petrol and diesel engines work in mostly the same way, the methods behind them differ.
With the high cost of fuel, many are feeling the pinch. However, there are changes you can make to your driving to help you save fuel.