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Infiniti QX55 crossover coupe teased again, hints at FX looks and a surprise out back

Infiniti plans to launch five new vehicles in the next three years. We got an abstract squiggle of the first one in August, when Infitini teased the coming QX55 crossover coupe during Monterey Car Week. Said to act as a medium that would communicate design language from the dearly departed FX crossover, the QX55 is meant to infuse a lot more design mojo to the conventional QX50 crossover that it's based on. The Japanese luxury brand just dropped the second teaser, this one revealing a swath of greenhouse and shoulder, and indeed, an arc of chrome trim that could have been traced from FX production drawings. The attention-getter here is what comes behind the greenhouse: A tailgate extension with the makings of a stubby trunk.  Positive reviews have come from a group of media to whom Infiniti showed a matte gray pre-production version of the QX55. The front diverges from the QX50 only in a few details, while the roofline isn't as coupe-ish as it might be because designers wanted to ensure adequate headroom for rear seat passengers. The steep rake has been saved for the area aft of the C-pillar, convincing one scribe to write that "the QX55 reminds us most of the Audi Q8, which also lacks swooping silhouette and looks more like a lifted hatchback." The rear fascia is said to look "cleaner and more modern than Infiniti’s current midsize crossovers," even though the jutting rear presents a vertically flat lower hatch that looks "a bit boxy." Having moved the license plate holder to the bumper, the wide expanse is home to a larger Infiniti badge and logo script with an "I" that serves an as-yet-undisclosed function. At the edges come taillights with a "sharp new piano key design." One site summed up with, "this is a gorgeous crossover coupe that will turn heads." The QX50 is expected to debut in the first three months of 2020, with an on-sale date sometime next summer.

Mercedes and Infiniti confirm joint production in Mexico [w/video]

It's official, folks: After initial reports last week indicated that Mercedes-Benz was preparing to begin assembly at the Nissan plant in Aguascalientes, Mexico, the two parent companies have announced just that. Only instead of using the existing Nissan plant at the site (in operation since 1992), Daimler and the Renault-Nissan Alliance have announced a joint venture to build a new one alongside it.
The latest stage in the growing French-German-Japanese collaboration is part of a new collaboration that will see Infiniti and Mercedes jointly develop and build a line of compact premium vehicles, with the first Infiniti models set to roll off the assembly line in 2017 and the first Benzes to follow a year later. Neither party announced exactly which models that would encompass, but Mercedes already has a robust line of small vehicles (including the A-Class, B-Class, CLA and GLA), and Infiniti has long been toying with the idea of slotting in something smaller below the Q50.
The billion-euro project, split evenly between the two industrial giants, is set to create 5,700 new jobs in Mexico. In addition to the Aguascalientes project, Infiniti and Mercedes are also undertaking joint production of four-cylinder engines (initially for the C-Class and Q50) in Decherd, Tennessee, from which they will be exported around the world. By the time the new factory in Mexico reaches full capacity in 2021, it will have the capability to produce 300,000 vehicles annually. That's on top of the 850,000 vehicles the existing facility is capable of handling.

Infiniti's new VC-T changes the rules of small turbocharged engines

The upcoming Infiniti QX50 crossover does not get our pulse racing, no matter how shapely the QX Sport Inspiration concept that previews it may be. No midsize SUV does, to be fair. But it has something special under the hood – the world's first production variable-compression-ratio engine. That means the QX50's 2.0-liter turbo four, which makes 268 horsepower and 288 pound-feet of torque, will have up to 27 percent better fuel economy. Here's how it works. The trend of moving to smaller, turbocharged engines carries with it one big falsehood. Under low load when the turbo isn't needed, these engines are less efficient than an equivalent engine without a turbo because of the low compression ratio the turbo requires. That is, if you never need the extra power, you're wasting fuel. Turbocharged (and supercharged) engines use a lower compression ratio to prevent detonation. When you force extra air in a cylinder and mix it with fuel, it's more likely to prematurely go boom. Lowering the compression ratio prevents this problem, but it's less efficient. Infiniti's VC-T promises the best of both worlds, with a compression ratio that ranges from 8.0:1 for high-power turbo needs to a 14.0:1 ratio for fuel-sipping efficiency. At its heart the VC-T engine is a simple idea, but it's complicated to explain. Consider yourself warned. The photo below from Infiniti serves as a good visual overview. For the truly nerdy, this patent application covers the mechanical concept. Instead of having the pistons connected to the crankshaft, Infiniti's engine has a pivot arm with a connection on each end. One end connects to the piston, the other connects to a second lower shaft, which is controlled by an actuator arm. At any given time the engine's pistons move up and down according to the lobes on the crankshaft. But the actuator arm can change the angle of the pivot arm up and down. That is, the pistons still move in the same motion with the same stroke, but phase the entire stroke up or down. Move the pivot up and there's less room at the top, which means a higher compression ratio. Move the pivot down and the compression ratio goes down, too. As an added bonus, the lower shaft eliminates the need for counter-rotating balance shafts. Infiniti says this system works constantly and can vary the compression ratio to any number between 8:1 and 14:1. It also uses electronic variable valve timing on the intake valves to switch into Atkinson-cycle combustion for greater efficiency.