Driver tools Petrol vs diesel

  • See whether you should go for a petrol or diesel car
  • Calculate annual fuel bills for petrol and diesel versions of the same car
  • Residual values for petrol and diesel cars
  • How to find the cheapest petrol and diesel

What's in this guide

  1. Petrol and diesel fuel costs

    Will driving a diesel car be cheaper than driving a petrol car? Use our interactive calculator to figure it out.

  2. Choosing between petrol and diesel

    Car tax, servicing costs, residual values and other issues to consider when deciding between petrol and diesel cars.

  3. How to drive more efficiently

    Improve your fuel economy and reduce your reliance on expensive fuel.