Press Release

2020 Hybrids Surge onto Greenest Car List, Joining the Greenest of EVs

January 22, 2020

Washington, DC (January 22, 2020): After several years of all-electric cars dominating the annual Greenest vehicles list, 2020 brings a surprise – a resurgence of the hybrid, whether plug-in or gasoline only. With slightly higher scores, hybrids account for nine of the 12 greenest vehicles in the 23rd GreenerCars’ ratings, released today by the American Council for an Energy-Efficient Economy. These high-scoring hybrids include the Toyota Prius Prime, three others by Toyota, four by Hyundai-Kia, and one by Honda.

The auto industry, despite slowing sales, labor disputes, trade wars, and regulatory unrest, is producing more of the most technologically advanced and fuel efficient vehicles ever offered. This is great news for consumers, who continue to have plenty of options to buy a greener, more efficient vehicle.

While electric vehicles (EVs) get a lot of buzz, the top-scoring 2020 car reflects impressive improvements to the internal combustion engine that reduce tailpipe emissions and fuel consumption. Stronger tailpipe emission standards and lower emissions from the production and distribution of gasoline have also helped nudge hybrids to the top of the list.

“Some level of vehicle electrification is the clear path forward for both cars and light trucks, and for the foreseeable future, that will include everything from mild hybrids to all-electric vehicles,” said Eric Junga, senior transportation research analyst at ACEEE. “Gasoline hybrids are hitting seriously impressive fuel economy numbers and are available in nearly every vehicle category. And a hybrid full-size pickup may soon follow.”

The 2020 Greenest List features the most environmentally friendly cars now available. Each car is given a Green Score based on an environmental damage index (EDX), which reflects the cost to human health from air pollution associated with vehicle manufacturing, the production and distribution of fuel or electricity, and vehicle tailpipes.

Scores for many battery or all-electric vehicles (EVs) dropped slightly from last year. For some, this is a result of an update to the GreenerCars scoring model that calculates emissions from manufacturing different types of battery chemistries. Others, including the Hyundai Ionic Electric and Kia Soul Electric, come with substantially larger batteries and a considerable boost in driving range for 2020 that increase emissions from manufacturing and recycling and also slightly increase per-mile energy consumption.

Still, the greenest list has become increasingly competitive over time. We score vehicles on an even playing field that uses average emissions across the country, but the emissions associated with a particular vehicle can depend on many factors. One of the most significant impacts for EVs is the fuel used to generate electricity where the vehicle is charged, both today and in the future. Our analysis uses US government projections, which include slower growth in renewable energy generation than many other forecasts. For those considering whether a particular EV would fare better for their particular area, check out the GreenerCars Electric Vehicle Emissions Calculator.

“This year really marks the beginning of a historic influx of hybrids and alternative fuel powertrains. The days are long past where electrification was limited to smaller vehicles that may not suit everyone’s needs,” Junga said. He noted that hybrid versions of two of 2019’s most popular and practical cars – the Toyota Corolla and Toyota Camry – are now on the Greenest List. “No matter the type of vehicle, there is now a hybrid option, and we will soon be able to say the same about plug-in options as well.”

This marks the fifth consecutive year that the Greenest List contains no vehicle with solely an internal combustion engine. Even a small degree of electrification can greatly improve fuel economy and power, giving automakers an important tool to maintain the power that consumers expect, while allowing electric motors to help engines operate as efficiently as possible. Today’s results are truly a glimpse into the future of more-efficient and greener vehicles driven primarily by electrification. also identifies practical options in each class among widely available automatic transmission gasoline-powered models. The Greener Choices list includes conventional vehicles and traditional hybrids, but excludes plug-in hybrids and pure battery EVs given the limited availability of charging stations.

Many of these vehicles return to the Greener Choices list from prior years, indicating both their popularity with consumers and the ability of the automaker to design and sell greener vehicles. While a number of models are hybrids, most are standard gasoline-fueled vehicles that achieve better fuel economy today compared to some hybrid options of just 10 years ago. also provides a Meanest List, as usual made up of gasoline-powered large SUVs, pickup trucks, and European luxury cars that are the least friendly to the environment. The Jeep Grand Cherokee Trackhawk takes the first (or last) position for a second year, with the rest of the list populated by regulars from prior years.

Green Scores of the 1,100-plus model year 2020 vehicles are available for free in the interactive database, along with each configuration’s fuel economy, health-related pollution impacts, and greenhouse gas emissions. Visitors can also turn to GreenerCars scores to determine eligibility for parking benefits at participating LEED-certified buildings. also features a 2020 market trends report and shopping advice, as well as a consumer primer on vehicles and the environment.

Changes to this year’s methodology include updates to estimates of vehicle lifetime miles travelled for electric vehicles, emissions associated with the production of gasoline and diesel fuels, and refinements to estimates of emissions from the manufacturing and recycling of battery electric vehicles.

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