Greener car guide

Diesel? Hybrid? Electric? Petrol? There are lots of options when it comes to choosing the most environmentally friendly car.

That's why we have created this interactive tool. It aims to provide a rough guide to the best choices for you - taking into account how much you drive, how far and much more.

To make these calculations, we have had help from Top Gear magazine journalist Paul Horrell, and Mike Berners-Lee, author of the book 'How Bad are Bananas?' which outlines the environmental cost of many everyday items. The original idea for this guide came from a decision tree in Chris Goodall's book 'How to Live a Low-Carbon Life'.

Click on the blue arrow below to get started.