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A look inside Infiniti's variable-compression engine

We're sympathetic to anyone who had trouble understanding what's going on with Infiniti's new variable-compression engine. While we got a full tech briefing on the novel VC-Turbo back in August, the visual aids were lacking. The cutaway engine Infiniti brought to the Paris show fixes all of that. You can thank the little green and pink lines on the cutaway for making the whole idea a little more clear. Click through the gallery to see two lines – one green and one pink – that represent the different strokes allowing for different compression ratios. Remember, the compression ratio is the amount of volume in the cylinder on intake compared to the amount at the end of the compression stroke. Leave more room at the end and you lower that ratio. The length of the stroke doesn't change with this system, but where it sits along the cylinder does. Hence those two lines. The variable compression ratio allows this new turbocharged engine to maximize fuel economy when the turbo isn't needed by raising the compression ratio. It will see its first use in the next Infiniti QX50 crossover, previewed by the QX Sport Inspiration concept that's also on display in Paris, and has performance targets of 268 horsepower and 288 pound-feet of torque. After, it will migrate to other Infiniti and Nissan vehicles, with transverse front-drive-based applications first in line. Eventually, it's likely to completely replace Nissan's corporate 3.5-liter V6. We'll be poking around the engine a little more in Paris today to try and get some more info. For now, enjoy those cutaway images and those friendly little lines. Featured Gallery Infiniti VC-Turbo engine cutaway View 14 Photos Paris Motor Show Infiniti Nissan Technology Emerging Technologies engine 2016 paris motor show

Weekly Recap: Chevy and Alfa plot comeback strategies

Chevrolet and Alfa Romeo were two of the 20th Century's most iconic automotive brands. Chevy embodied America's post-war power and confidence. Alfa was the definition of the stylish Italian sports car. They reached halcyon heights in the 1950s and '60s, before declining precipitously amid new competition, changing consumer tastes, and uneven corporate management. Both say 2015 is the start of something better, and this week Chevy and Alfa laid out ambitious plans and showcased new cars that they hope will make them more relevant this year, and in the coming years. Each brand sits at its own crossroads, and their paths forward are as different as the Chevy Cruze and the Alfa Romeo Giulia. Chevy is still a sales beast, as evidenced by its volume of 4.8 million vehicles sold around the world last year. Chevy executives are fond of saying one of their cars is sold every seven seconds, which illustrates the strength and reach of a car brand that is the fourth largest in the world. "Make no mistake about it, we are a brand for the people," said General Motors North America president Alan Batey. But he wants consumers to want to buy a Chevy for its design and technology, not simply because it's affordable. That starts with all Chevys now featuring a distinctive a family look, with sporty cues from the Corvette or strong lines that riff on the Silverado pickup. "We want people to fall in lust with our cars," said Mike Pevovar, executive design director for Chevy passenger cars. "That initial emotional attraction has to be right on the exterior, and that's where form comes into play." Chevy is also loading up its cars, like the freshly unveiled 2016 Chevy Cruze, with technology to appeal to a younger crowd that prizes connectivity. The Cruze will offer Apple CarPlay and Android Auto with its MyLink infotainment system, and OnStar with 4G LTE and wifi. Seeking out younger buyers is also sound business practice: Millennials now outnumber Baby Boomers as the largest single age group in the United States. Younger buyers also can improve a brand's image, which is another area where Chevy would like to improve. Chevy ranks 82nd on Interbrand's Best Global Brand's list, behind 11 other automakers. Apple is No. 1. "We need our own variation of the Genius Bar," Batey said. 2016 Alfa Romeo Giulia View 3 Photos Meanwhile, Alfa is in different shape.

Trucks, SUVs drive U.S. October new vehicle sales

DETROIT — Major automakers posted mixed U.S. new vehicle sales in October on Wednesday, though America's love affair with high-margin pickup trucks and SUVs remained in full bloom as larger, pricier vehicles fared better than passenger cars. Auto industry publication WardsAuto put the seasonally-adjusted annualized rate (SAAR) for light vehicle sales in October at a robust level of 18 million units. But after a long boom cycle, carmakers are still ill-prepared for the slight decline in sales anticipated for full-year 2017 and have taken too few steps to trim production, said Doug Mehl, a partner in consultancy A.T. Kearney's automotive practice. "When you make a new vehicle, you have volume assumptions tagged to it, and who wants to be the guy who says, 'I'm going to make less of this really cool model'?" Mehl said. "But eventually the market is the reality, and it's going to force companies one way or other here." General Motors GM reported a sales drop of 2.2 percent for the month, with consumer sales down 6.6 percent. But sales of high-margin pickup trucks, sport utility vehicles and crossovers all rose. GM also cut its inventory of unsold vehicles — a source of concern for the market — slightly. The automaker has worked to reduce its volume of excess inventory, including through significant production shutdowns in the third quarter. GM had said its inventory would rise in October. "We are heading into the fourth quarter with good momentum, thanks to a strong U.S. economy and very strong pickup and crossover sales," said Kurt McNeil, GM vice president for U.S. sales operations. GM slightly reduced consumer discounts as a percentage of average transaction prices to 13.5 percent, from 13.7 percent in the third quarter. Industry experts believe consumer discounts above 10 percent of the average transaction price are unhealthy as they erode resale values and are unsustainable in the long term. Consultants J.D. Power and LMC said last week that based on preliminary October sales numbers, discounts have exceeded 10 percent in 15 of the past 16 months. Ford The U.S. auto industry posted record sales of 17.55 million vehicles in 2016. New sales received a strong boost in September as consumers replaced vehicles damaged in southeast Texas by Hurricane Harvey the previous month. Full-year 2017 sales are expected to be slightly lower than 2016.