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The greenest cars of 2024: Vehicles that use the least fuel and cost less to operate

All-electric vehicles may make headlines for environmental friendliness and fuel efficiency, but the “greenest” car in America in 2024 has a gasoline engine. According to the American Council for an Energy-Efficient Economy's annual GreenerCars ratings of the most environmentally friendly cars, the latest Toyota Prius Prime SE plug-in hybrid tops the list of greenest cars, although it's something of an anomaly, because battery-electric EVs follow it in spots two to five. Of the top 10 vehicles in the ratings, six are electric and four are hybrids: Rank Make & Model Powertrain Green Score MSRP Estimated Annual Fuel Cost* 1 Toyota Prius Prime SE PHEV 71 $32,975 $529 2 Lexus RZ 300e EV 67 $55,150 $651 3 Mini Cooper SE EV 67 $30,900 $747 4 Nissan Leaf EV 66 $28,140 $741 5 Toyota bZ4X EV 66 $43,070 $689 6 Toyota RAV4 Prime PHEV 64 $43,690 $741 7 Hyundai Elantra Blue Gas Hybrid 64 $26,250 $864 8 Hyundai Kona Electric EV 63 $34,050 $695 9 Toyota Camry LE Gas Hybrid 63 $28,855 $907 10 Kia EV6 EV 63 $43,975 $689 11 Toyota Corolla Gas Hybrid 62 $23,500 $944 12 Hyundai Ioniq 5 EV 62 $41,650 $737 *ACEEE analysis using EIA data of annual cost—from gasoline, electricity, or a combination—of driving 15,000 miles The ACEEE also compiled two other vehicle rankings: the so-called “Greener Choices” and the “Meanest List.” The Greener Choices list includes a variety of high-scoring conventional vehicles, and the Meanest List identifies the worst-performing mass-market models. Finishing first in the “greener” list — which the organization says is about cars “available nationwide with among the lowest environmental impacts” — is the Honda Accord Hybrid. As far as the “worst-performing mass market” vehicle, that dubious distinction goes to the $184,000 Mercedes-Benz AMG G63. “ItÂ’s important for automakers to keep expanding affordable EV options rapidly so that the benefits of EVs are available to drivers across a wider spectrum of incomes as we transition away from cars that burn gasoline,” said Peter Huether, ACEEEÂ’s senior transportation research associate and lead researcher for the GreenerCars rankings. “For drivers whose needs are not met by todayÂ’s charging infrastructure, many efficient and affordable hybrid options are available.” Just over half the cars on the 2024 Greenest List start at under $35,000, including four EVs and three gas hybrids.

Toyota, Daimler Truck, Hino and Mitsubishi Fuso join forces

TOKYO — German truck maker Daimler, JapanÂ’s top automaker Toyota and two other automakers said Tuesday they will work together on new technologies, including using hydrogen fuel, to help fight climate change. The companies said Mitsubishi Fuso Truck and Bus Corp., whose top stakeholder is Daimler Truck, and Hino Motors, the truck maker in the Toyota group, will merge. Daimler Truck and Toyota Motor Corp. will equally invest in the holding company of the Mitsubishi-Hino merger, they said without giving a dollar amount for the deal. The companies plan to cooperate in reducing carbon emissions and developing other technologies such as autonomous driving, net-connected services and electric vehicles. “This collaboration among our four companies is a partnership for creating the future of commercial vehicles in Japan and the future of a ‘mobility society,Â’ said Toyota Motor Corp. Chief Executive Koji Sato. The two truck companies will work on commercial vehicle development, procurement and production to become globally competitive, the executives said. “We at Daimler Truck are very proud of our products, because trucks and buses keep the world moving. And soon they will even do so with zero emissions,” said Daimler Truck Chief Executive Martin Daum. “TodayÂ’s announcement is a crucial step in making that future work economically and in leading sustainable transportation.” Automakers are rushing to keep up with the global shift toward less polluting vehicles and to help in other ways to combat climate change. Commercial vehicles like trucks and buses are major contributors to auto emissions. In some cases rivals are joining forces to gain a a competitive edge and cut costs through “economies of scale” of by sharing knowledge and resources. “It is hard to go at it alone. Working together is crucial,” Sato said, Fuel cells power ToyotaÂ’s buses in Japan but its strength has been in hybrids, which have both electric motors like EVs and gasoline engines. Consumer acceptance of battery powered EVs has come faster than expected, Toyota officials say, and the company is hard at work on rolling out EVs in various markets. Details of the merger, including shareholding ratios, the company name and its structure will be worked out over the next 18 months, the companies said. They aim to sign a definitive agreement by early next year and close the transaction by the end of 2024. The deal still needs shareholdersÂ’ and regulatory approval.

Toyota unveils two new small displacement engines

Toyota introduced a pair of brand-new engines in Japan today, that it says will eventually spawn 14 different variants by 2015. Where these two engines stand out in today's world, is that neither mill boasts direct injection, and both are naturally aspirated.
The larger of the two is a 1.3-liter, while the smaller engine, a 1.0-liter, was developed in collaboration with Daihatsu. What makes these two unique is that they both use the Atkinson cycle. Now, we aren't going to bore you by explaining just what this is - there's Google for that. Suffice it to say, Atkinson engines are highly efficient, but that efficiency comes by sacrificing power. That's why they're so popular in hybrids, which can offset the power losses.
This focus on fuel efficiency extends throughout the new engines, which also benefit from tweaks like a cooled exhaust gas recirculation system and a trick intake port, while the 1.3 employs Toyota's iE variant of variable valve timing. Both engines can be fitted with stop-start tech. According to Toyota, when fitted with stop-start the 1.3 should provide around a 15-percent bump while the 1.0-liter will increase economy around 30 percent, when they arrive on the road.