Which car is the most environmentally friendly? | A look at the car and vehicle efficiency rankings for 2018.

A look back at the cars that made the most impact in 2018.

We took a look at all the new and upcoming vehicles that have been announced or launched for 2018 and gave a ranking of their environmental impacts, and how well they fared.

For each car, we looked at the vehicle efficiency ratings for the car, the emissions reduction, the cost of the vehicle, and the cost per km of the fuel economy rating.

We also looked at a list of vehicles with the most fuel-efficient engines.

Our ranking took into account the carbon emissions of the vehicles, the price per km, and even the number of vehicles in the fleet.

Here’s what we found.