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The tricky business of octane, power, and MPG

Given tepid green-car sales numbers this year, consumers in the US aren't making the transition away from internal combustion engines too quickly. Regulations are still mandating cleaner emissions, though. In addition to downsizing and turbocharging, there's growing consideration about moving to higher-octane fuel to improve overall efficiency. In a new report, engineers at FCA, Ford and General Motors Powertrain are showing that it could work, too. The major advantage to higher-octane fuel is that it supports higher compression ratios. That in turn can lead to more power from burning the same amount of gas. "Higher ethanol content is one available option for increasing the octane ratings of gasoline and would provide additional engine efficiency benefits for part and full load operation," the researchers write in the study's abstract. The authors even think it could be possible to update some modern vehicles' engine calibration to be optimized for the better gas. While the benefits are there, we still have a long way to go before higher-octane fuel becomes a national standard. According to Green Car Congress, 87 percent of the gas sold in the US is regular grade 87-octane. Meanwhile, premium 91-93 octane makes up just 10 percent. The various grades of fuel illuminate even more annoyances with the current system. For example, Ford generally recommends 93-octane for EcoBoost engines, and the power outputs that the company publishes are based on using it. However according to Green Car Reports, such premium gas is very difficult to find in some regions of the US, especially along the West Coast. The powertrains still run on lesser grades but with lower power output. The researchers' discussion of possibly increasing ethanol in gas also comes during a heated debate on the substance. The current administration is pushing for less of the corn-based fuel in the coming years. Although, several presidential hopefuls might be favor of reversing that course.

Dodge Challenger outsold Mustang, Camaro in third quarter of 2019

The Dodge Challenger is nearly old enough to start driver's ed in some states, and it doesn't have a firm grasp on the increasingly crucial concept of downsizing, yet it beat the odds to become the most popular American two-door model during the third quarter of 2019. Its ballooning sales figures suggest buyers don't always want the latest, most advanced car they can get their hands on. Dodge sold 18,031 examples of the Challenger during the third quarter of 2019, a shocking 21% increase over the same period in 2018. It's a true muscle car, normally sardined in the same can as the Chevrolet Camaro and the Ford Mustang, a pair of smaller, nimbler two-doors that are much closer to the historic definition of a pony car. Semantics aside, the Mustang finished on the second spot of the sales podium with 16,823 sales, a 12.3% drop compared to the third quarter of 2018, and the Camaro took third with 12,275 sales, a 15% dip that alarmingly comes in the wake of two redesigns. More specific sales figures aren't available. We don't know what percentage of the sales mix V8s represent, or whether buyers prefer manual or automatic transmissions. The scoreboard looks different when we examine 2019's year-to-date figures. The Mustang takes first place with 55,365 sales, followed by the Challenger at 46,699, and the Camaro at 36,791. While the Challenger's recent ascent is encouraging, it can't mask the fact that two-door models no longer enjoy a favorable tailwind, and the entire segment — not just the American entries — is declining. The aforementioned year-to-date figures are down by 10.1, 11, and 7.6 percent, respectively. The third-quarter statistics revealed a handful of other surprises unrelated to the world of performance. Dodge notably sold three examples of the Dart, a sedan it hasn't built since 2016. That's a 93% drop compared to the 45 units that found a home during the third quarter of 2018.

Stocks down as automakers, Boeing lead China's hit list in trade spat

Shares in U.S. exporters of everything from planes to tractors fell on Wednesday after China retaliated against the Trump administration's tariff plans by proposing duties on key U.S. imports including soybeans, beef and chemicals. U.S. automakers' products are prominent on China's list of tariff targets, yet shares of automakers ended higher on Wednesday as Wall Street stocks changed course in the afternoon when investors' trade fears subsided. Tesla shares closed 7.3 percent higher at $286.94, Ford shares gained 1.6 percent to close at $11.33, and GM shares were up 3 percent at $38.03. Aircraft maker Boeing closed down 1 percent, weighing the most on the Dow Jones Industrial Average as documents from China's Ministry of Commerce and the U.S. manufacturer showed the move would affect some older Boeing narrowbody models. It was not immediately clear how much the tariffs would impact its newer aircraft. Boeing said it was assessing the situation while analysts from JP Morgan said the proposals from China looked to have been calibrated carefully to avoid a major impact on the planemaker. Fellow Dow component 3M lost as much as 2.4 percent. And farming equipment maker Deere lost nearly $10 per share at its lowest. The company urged the two countries to work toward a resolution to "limit uncertainty for farmers and avoid meaningful disruptions to agricultural trade." The speed with which the trade spat between Washington and Beijing is ratcheting up — the Chinese government took less than 11 hours to respond with its own measures — led to a sharp selloff in global stock markets and commodities. China was hitting back against U.S. President Donald Trump's plans to impose tariffs on $50 billion in Chinese goods with similar tariffs on U.S. goods even as Trump said the country is "not in a trade war with China." "Everybody knew they were going to retaliate. The question was how strong of a retaliation. Today's move clearly shows that they mean business," said Adam Sarhan, chief executive of 50 Park Investments in New York. China levied 25 percent additional tariffs on U.S. goods, but unlike Washington's list that covers many obscure industrial items, Beijing's covers 106 key U.S. imports including soybeans, planes, cars, whiskey and chemicals. Trump denied that the tit-for-tat moves amounted to a trade war between the world's two economic superpowers.