Concentration of CO2 in the Atmosphere

Affordable Tech Marvels Dominate Greenest Vehicles List

For those who like clean vehicles with state-of-the-art technology, or simply want to reduce their environmental footprint, today’s market has good news. A variety of affordable, efficient, tech-smart cars and trucks are now on the market, giving American consumers plenty of options for buying a greener vehicle. At, the American Council for an Energy-Efficient Economy (ACEEE) released its 21st annual GreenerCars vehicle ratings to help consumers make that choice.

For the second year, the mid-sized Hyundai Ioniq Electric takes the top spot on the Greenest List, achieving the highest-ever Green Score of 70. The Ioniq brings high efficiency in a practical size, earning its place at the top of our Greenest List. The Mercedes-Benz Smart Fortwo Electric Drive, BMW i3 BEV, Kia Soul Electric, Ford Focus Electric, and Honda Clarity also earn places among the greenest vehicles for sale today.

Perhaps the most buzzworthy automotive news of the last year was the introduction of the all-new Tesla Model 3, which joins the Chevrolet Bolt (ranked sixth) as the second electric vehicle (EV) that consumers can purchase for less than $40,000 (before tax credits) and drive more than 200 miles on a full charge. The Model 3 Long Range claims the fourth spot with a score of 67.

The following vehicles make up the Greenest List for 2018, representing the most environmentally friendly cars for sale today. 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, and vehicle tailpipes.

Greenest Cars Score
1 Hyundai Ioniq Electric 70
2 Mercedes-Benz Smart Fortwo Electric Drive 69
3 BMW i3 BEV (94 Ah) 68
4 Tesla Model 3 Long Range 67
5 Kia Soul Electric 66
6 Chevrolet Bolt EV 66
7 Hyundai Ioniq Blue 65
8 Toyota Prius Eco 64
9 Ford Focus Electric 64
10 Kia Niro Plug-in Hybrid 63
11 Honda Clarity Plug-in Hybrid 62
12 Chevrolet Volt 62

The automotive industry is producing a variety of cars and trucks with highly efficient electrified drivetrains. Electrified drivetrains incorporate an electric motor and battery, driving entirely on electricity in the case of a pure EV, or in conjunction with a traditional gasoline or diesel engine in the case of hybrids and plug-in hybrids.

“Automakers have brought an impressive number of highly efficient vehicles to market, giving American consumers more choices, whether they are looking for a compact car or a fully-loaded pickup,” said Eric Junga, Transportation Research Analyst at ACEEE. “And as electric vehicles become more affordable and more enticing thanks to increased range and state-of-the-art features, sales are really picking up steam.”

Hybrids also make an appearance on the Greenest list, with Toyota’s Prius lineup and Hyundai’s Ioniq hybrid variants performing well. The Kia Niro plug-in hybrid, using the same drivetrain as the Ioniq, and the Chevrolet Volt plug-in with an impressive 53-mile electric-only range, both return to the Greenest List, as well.

For the third consecutive year, the Greenest List is populated completely by vehicles with some form of electric powertrain and contains no vehicle with an internal combustion engine (ICE) alone. Manufacturers have made impressive strides in the efficiency of ICEs, but adding a small degree of electrification can further reduce environmental impact over the life of a vehicle. Even when considering the emissions from the production of batteries, electrified cars and trucks take claim as the most environmentally friendly vehicles available today. also identifies practical options in each class among the top widely available automatic transmission gasoline or diesel models, because vehicles on the Greenest list may not meet the needs of every individual or may not be widely available. The Greener Choices List includes both conventional vehicles and traditional hybrids, but excludes plug-in hybrids and pure battery electric vehicles that require the availability of a charger to maximize efficiency.

Greener Choices Vehicle Class Score
1 Toyota Camry Hybrid LE Midsize car 62
2 Toyota Camry Hybrid LE Midsize car 62
2 Kia Niro FE Small wagon 61
3 Toyota Prius C Compact car 61
4 Ford C-Max Hybrid Large Car 55
5 Toyota Yaris iA Subcompact Car 55
6 Nissan Rogue Hybrid Medium SUV 52
7 Honda CR-V Small SUV 50
8 Mercedes-Benz GLA250 Medium Wagon 48
9 Lexus RX 450h Large SUV 46
10 Chevrolet Colorado / GMC Canyon Diesel Compact Pickup 42
11 Ford F-150 Base Payload Standard Pickup 41
12 Chrysler Pacifica Minivan 41

The Greener Choices list demonstrates that consumers can make greener choices, even if their vehicle needs aren’t met by those on the Greenest List. The new Toyota Camry Hybrid, which just misses the Greenest List, shows up on the Greener Choices list as a high-scoring option for buyers looking for a mid-size car. Greener Choices also highlights green options for trucks and SUVs for those buyers who need the extra space, including the rear-wheel-drive 2.7-liter Ford F-150 and Honda CR-V. The Chevrolet Colorado/GMC Canyon Diesel earned a score of 42, and the Chrysler Pacifica minivan returns with a score of 41. While plug-ins are excluded from Greener Choices, it’s worth noting that the Pacifica plug-in hybrid option scored an impressive 55 and is cost-competitive with the gasoline-only version when federal incentives are factored in. also provides a Meanest List, populated this year – as usual – by large SUVs, well-equipped pickup trucks, heavier medium-duty vehicles, and European luxury cars that are the least friendly to the environment.

Green Scores of the 1,500-plus configurations of all model year 2018 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 to the database can build custom lists for comparing vehicles. also features a write-up on model year 2018 market trends, a consumer primer on vehicles and the environment, and advice on how to buy green when shopping for a new car or truck.

Updates to this year’s methodology include new estimates of emissions associated with electricity production, as well as updated emissions from the manufacturing and recycling of vehicles.

To read the news release online, visit

The American Council for an Energy-Efficient Economy (ACEEE) acts as a catalyst to advance energy efficiency policies, programs, technologies, investments, and behaviors. For information about ACEEE and its programs, publications, and conferences, visit

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