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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

NHTSA opens investigation into Nissan's handling of airbag recall

In March of 2014, Nissan recalled eight models among its Nissan and Infiniti brands, totaling more than one million vehicles, over faulty occupant classification system software controlling the passenger airbag. The company discovered a variety of factors that would interfere with the system's ability to detect an adult passenger in the shotgun seat, resulting in an illuminated warning on on the dashboard and the passenger airbag not deploying in an accident. Yet 124 complaints submitted to the National Highway Traffic Safety Administration since the recall allege that the dealer-installed fix hasn't actually fixed the problem; some consumers say the problem persists after multiple trips to the dealer. The Detroit News reports that NHTSA is opening an investigation into the matter to determine whether a new recall is needed. The occupant sensor has been a bugbear for Nissan over the past couple of years; a much smaller recall for the issue in 2013 covered five of the eight vehicles that were recalled in 2014, and that earlier recall also continued to generate complaints after the issue had supposedly been fixed. At the same time, the company learned that in two instances there was another twist, where the dashboard warning wasn't illuminated but the passenger airbag still didn't go off in an accident. Nissan isn't alone, though, with airbag recalls on a steep upswing across the industry even before the Takata debacle.

European jury picks finalists for 2015 Car of the Year

There are countless Car of the Year awards handed out each year, and naturally, Europe has its own way of doing things. Every year, a panel of jurists representing seven publications in seven different languages and seven different countries get together to name their joint Car of the Year. The panel released a list of 32 candidates back in July, and it has now whittled that list down to seven nominees. The list consists of the BMW 2 Series Active Tourer, the Citroen C4 Cactus (shown), the Ford Mondeo, the Mercedes-Benz C-Class, the Nissan Qashqai, the Renault Twingo and the Volkswagen Passat. Of those seven, only two are available in the US – those being the Mondeo (sold Stateside as the Fusion) and the C-Class. The Passat is an entirely different model in North America, the Qashqai isn't offered here, Citroen and Renault don't even participate in our market and the BMW 2 Series is represented here only by the completely different coupe and convertible. Expect the one and only recipient of the 2015 Car of the Year award to be announced at the Geneva Motor Show this coming March, and while you're waiting, you can place your guesses for the eventual winner in Comments. Featured Gallery 2015 European Car of the Year: Nominees News Source: CaroftheYear.org BMW Ford Mercedes-Benz Nissan Volkswagen Citroen Renault car of the year nissan qashqai citroen c4 cactus bmw 2 series active tourer