Which cars pollute the most

The easiest way to minimize your carbon footprint with your next car purchase is to choose a model with the best fuel economy possible. Experts say that realizing even minor improvements in fuel economy among the worst polluters on the road is the most efficient way to reduce greenhouse gas emissions overall. For example, choosing a base GMC Yukon with a 5. The EPA currently provides consumers with air pollution scores, fuel-economy estimates and greenhouse-gas-emission ratings for all passenger cars and light-duty trucks at www.

A few states have enacted regulations that will require automakers to post labels on vehicles detailing the amount of greenhouse gases each one emits, along with how that model compares to the average of all cars and trucks from its model year. California and Connecticut will begin requiring such labels beginning with models, and New York will follow suit for vehicles. Europe is ahead of the U. Polk and Company in Southfield, Mich. IE 11 is not supported.

For an optimal experience visit our site on another browser. The 2 engine in this 2 Series model officially complies with the latest emission standards for new generations of cars, Euro 6d-temp, which will apply to all remaining new cars sold as of September This requires the car to go through new official RDE Real Driving Emissions tests, which happen outside of a lab, on real roads. You can read more about both the official tests and our own tests in our guide to how we test mpg and emissions.

It can be found in both the saloon and estate versions of the E-class. The saloon version is the cleanest of the two, producing just 0. The estate, with the same engine, emits 0. The saloon and the estate both emit far less NOx than the Euro 6 limit they comply with in official tests unlike the BMW, these cars are not officially Euro 6d-temp compliant as they have not been through official RDE tests.

Naturally, eyebrows rose when we recorded these low figures. We found the real-life value recorded on the PEMS either matched the lab figure, or was acceptably low.

The emission levels seem genuine. For our full verdict on these cars, see our reviews of the Mercedes E-class saloon , and the Mercedes E-class Estate. The elephant in the room is that, in June , Mercedes was ordered by German authorities to recall cars over illegal emissions software. Adrian Porter, Which? That tarnishes our findings, and further erodes what little trust people have left in diesel engines.

But rather the scandal-led destruction of consumer confidence by the carmakers themselves. Tougher fuel economy and emission tests for all new cars are about to come into full force.

See our mpg and emissions guide to find out more about what these new tests are, and how our own tests compare. Hybrid cars, which use a battery in conjunction with a petrol or in some cases, diesel engine, have been the fuel efficiency kings for around-town driving for some time. But traditionally, hybrid cars are not particularly efficient at motorway speeds, and so our unique motorway fuel economy and emissions test cycle is the natural enemy of the part-battery powered cars. Nissan Leaf 3.

Honda Insight 55 49 63 8. Hyundai Kona Electric 4. Volkswagen e-Golf 3. Toyota Camry Hybrid LE 51 53 Green 2 score 1. Jeep Grand Cherokee Trackhawk 4X4 11 17 25 2. Toyota Sequoia 13 17 27 3. Mercedes-Benz 12 18 28 3. Mercedes-Benz G 13 17 28 3. Toyota Tundra 13 17 28 3.