How are CO2 emissions measured?

The amount of carbon dioxide (CO2) emitted from a cars exhaust pipe is calculated in grams per kilometre (g/km). Tests on the new cars are conducted in a laboratory on a “rolling road” and the output is based on a “combined cycle” in which a variety of driving conditions are replicated. The CO2 output is then printed on the V5 registration document of all cars registered after February 2001.

As a rule of thumb, the larger the cars engine, the higher the emissions. This is due to the need to draw in more oxygen and burn more fuel in order to develop more power.

The CO2 emissions of each model of car allows consumers to buy cars that have reduced impact on the environment and also allow the UK Government to tax cars at different rates.

Recent figures have shown that driving a low CO2 emission car can save an individual up to £400 a year.

On this site we have brought together all the green cars (CO2 emissions under 150 g/km) in the UK and this will help you to choose a car that will not only reduce your impact on the environment but also save you hundreds of pounds every year.

Listed below are the pages within the site that show you the green cars with the lowest CO2 emissions in their category.

http://www.thegreencarwebsite.co.uk/green-cars-by-category/s/saloons/
http://www.thegreencarwebsite.co.uk/green-cars-by-category/h/hatchbacks/
http://www.thegreencarwebsite.co.uk/green-cars-by-category/e/estates/
http://www.thegreencarwebsite.co.uk/green-cars-by-category/c/coupes/
http://www.thegreencarwebsite.co.uk/green-cars-by-category/t/cabrios/
http://www.thegreencarwebsite.co.uk/green-cars-by-category/p/people-carriers/
http://www.thegreencarwebsite.co.uk/green-cars-by-category/f/4x4s/