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The most efficient gas or hybrid cars of 2024: Not the greenest, but still very green

Not a single electric vehicle appears on the “greener choices” list assembled by the American Council for an Energy-Efficient Economy (ACEEE) in its annual compilation of the most environmentally friendly cars in the United States. But for potential car buyers seeking an efficient, fairly affordable gasoline or hybrid vehicle this year, the list of 12 cars, trucks and SUVs can help with decision making. Topping this yearÂ’s list was the gas/hybrid Honda Accord, priced at $33,990 with an estimated annual fuel cost of $982. Rank Make & Model Powertrain Vehicle Class Green Score MSRP Estimated Annual Fuel Cost* 1 Honda Accord Gas Hybrid Large Car 62 $33,990 $982 2 Kia Niro FE Gas Hybrid Compact SUV 61 $28,315 $885 3 Mitsubishi Mirage Gas Compact Car 59 $17,955 $1,189 4 Lexus ES 300h Gas Hybrid Midsize Car 59 $44,590 $1,073 5 Lexus NX 350h Gas Hybrid Midsize SUV 57 $43,465 $1,207 6 Ford Maverick Gas Hybrid Compact Pickup 55 $24,900 $1,297 7 Toyota Sienna Gas Hybrid Minivan 55 $39,080 $1,304 8 Mini Cooper Convertible Gas Subcompact Car 54 $35,700 $1,412 9 Toyota Highlander Gas Hybrid Large SUV 54 $40,720 $1,348 10 Kia Soul Gas Small Wagon 53 $21,565 $1,467 11 BMW Z4 sDrive30i Gas Two-Seater 50 $53,600 $1,626 12 Mercedes-Benz GLA250 Gas Hybrid Large Van 49 $43,000 $1,596 13 Volvo V90CC B6 Gas Hybrid Midsize Wagon 45 $59,800 $1,843 14 Ford Ranger Gas Standard Pickup 43 $32,670 $1,968 *ACEEE analysis using EIA data of the annual cost of driving 15,000 miles In making its evaluations, the ACEEE examines each 2024 model based on its cost to human health from air pollution associated with vehicle manufacturing and disposal, the production and distribution of fuel or electricity, and vehicle tailpipe emissions. The group also takes into account air pollution associated with EV battery manufacturing. The organization also ranks what it calls the “greenest” cars — it selected the Toyota Prius Prime SE plug-in hybrid is the greenest model of 2024. As well as the “Meanest.Â’Â’ or least efficient vehicle. At the top of that list this year was Mercedes-Benz AMG G63. The group says that the greener choices are those that are available nationwide “with among the lowest environmental impacts in each vehicle class but that didnÂ’t make the Greenest List.

Moon landing anniversary: How Detroit automakers won the space race

America's industrial might — automakers included — determined the outcome of the 20th centuryÂ’s biggest events. The “Arsenal of Democracy” won World War II, and then the Cold War. And our factories flew us to the moon. Apollo was a Cold War program. You can draw a direct line from Nazi V-2 rockets to ICBMs to the Saturn V. The space race was a proxy war — which beats a real war. It was a healthy outlet for technology and testosterone that would otherwise be used for darker purposes. (People protested, and still do, that money for space should go to problems here on Earth, but more likely the military-industrial complex would've just bought more bombs with it.) As long as we and the Soviet Union were launching rockets into space, we were not lobbing them at each other. JFKÂ’s challenge to “go to the moon in this decade and do the other things, not because they are easy, but because they are hard,” put American industry back on a war footing. We were galvanized to beat the Russians, to demonstrate technological dominance. (A lack of similar unifying purpose is why we havenÂ’t been to the moon since, or Mars.) NASA says more than 400,000 Americans, from scientists to seamstresses, toiled on the moon program, working for government or for 20,000 contractors. Antagonism was diverted into something inspirational. The Big Three automakers were some of the biggest companies in the moon program, which might surprise a lot of people today. Note to a new generation who marveled when SpaceX launched a Tesla Roadster out into the solar system: Sure, that was neat, but just know that Detroit beat Elon Musk to space by more than half a century. This high point in human history was brought to you by Ford ItÂ’s hard to imagine in this era of Sony-LG-Samsung, but Ford used to make TVs. And other consumer appliances. Or rather Philco, the radio, TV and transistor pioneer that Ford bought in 1961 — the year Gagarin and Alan Shepard flew in space. Ted Ryan, FordÂ’s archives and heritage brand manager, just wrote a Medium article on the central role Philco-Ford played in manned spaceflight. And nothingÂ’s more central than Mission Control in Houston, the famous console-filled room we all know from TV and movies. What we didn't know was, that was Ford. Ford built that. In 1953, Ryan notes, Philco invented a transistor that was key to the development of (what were then regarded as) high-speed computers, so naturally Philco became a contractor for NASA and the military.

Ford finds flex-fuel engine design plays big role in emissions output

How bad is ethanol for your engine? There's been a lot of debate on this issue as the US considers upping the biofuel content in the national gasoline supply from 10 percent (E10) to 15 percent (E15). The ethanol industry and some scientists say higher ethanol blends show no "meaningful differences" in new engines while the oil industry says ethanol creates health risks. Researchers working at the Ford Research and Innovation Center decided to take a closer look at how a wide range of gas-ethanol blends - E0, E10, E20, E30, E40, E55 and E80 - affected the emissions coming out of a flex-fuel 2006 Mercury Grand Marquis. To see the full report, printed in the journal Environmental Science & Technology, requires payment, but there is an abstract and Green Car Congress has some more details. The gist is that, "with increasing ethanol content in the fuel, the tailpipe emissions of ethanol, acetaldehyde, formaldehyde, methane, and ammonia increased." At least NOx and NMHC emissions decreased. The researchers say that the effects are due to the fuel and "are expected for all FFVs," but that the way that a manufacturer calibrates the engine will affect NOx, THC, and NMOG emissions. It's this last bit that's important, since the researchers found, "Higher ethanol content in gasoline affects several fundamental fuel properties that can impact emissions. ... These changes can have positive or negative effects that can depend on engine design, hardware, and control strategy. In addition to direct emissions impacts, higher ethanol content fuel can also provide more efficient combustion and overall engine operation under part-load conditions and under knock-limited higher-load conditions." So, as we head towards more ethanol in our fuel supply (maybe), manufacturers are going to need to learn how to burn it most efficiently.