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New details emerge on Inifiniti QX50’s unique new variable-compression engine

Infiniti will release the world's first production variable-compression engine when it releases the 2019 QX50 midsize SUV sometime next year. Now we have some new details on the innovative new engine, which Infiniti is calling VC-T, for Variable Compression Turbo, after the luxury brand offered a prototype test drive. We wrote extensively about the complicated technology underpinning the new engine last year. It's the latest novel development that could represent a range-extender, if you will, for the embattled internal combustion engine in an era when automakers and governments are shifting their focus to electric vehicles. The VC-T is a new inline-four, 2.0-liter that combines the power of a high-performance turbo gasoline engine with the torque and efficiency of an advanced diesel engine, but without the latter's notorious emissions. It features the ability to seamlessly raise or lower the stroke of the pistons in the combustion chamber, depending on the driving conditions it detects and inputs from the driver, to select the best compression ratio—anywhere between 8:1, typical for high-performance engines, and 14:1 for high efficiency. In essence, it delivers the performance of a V6 but is much more efficient, with improved fuel efficiency of between 10 to 15 percent with its best competitors, per Car and Driver. You can view how it works in motion via the video below. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. It's also quieter, more lightweight and compact than V6 engines with comparable power outputs, estimated at 268 horsepower and 288 pound-feet of torque. In a prototype test drive, Car and Driver writes that the engine "felt very conventional" and responsive, with strong and smooth acceleration. "The only indication you have that the compression ratio is changing is from an indicator in the instrument cluster next to the boost gauge." The engine is expected to deliver fuel economy gains of 27 percent in combined city-highway EPA rating over the outgoing QX50, which had a 3.7-liter V6. The 2019 model, fitted with the VC-T, should get about 26 mpg in combined fuel economy, and it will get to 60 mph almost one second faster than its four-cylinder counterparts, Nissan's chief powertrain engineer, Shinichi Kiga, told Automotive News. The VC-T engine is the result of 20 years of development spanning more than 100 prototypes and around 300 patents at Nissan.

The Infiniti Q30 is dead! Long live the Infiniti QX30!

Remember that Infiniti Q30 hatchback we drove last month? It's not coming to the US. But it also is coming to the US. Let us explain. Because of our crossover-obsessed culture, it's easier for automakers to brand new offerings as CUVs rather than hatchbacks. Take one five-door, front-wheel-drive car, add a teensy bit of ground clearance and all-wheel drive, and boom, success! So because the Q30 and ever-so-slightly higher-riding QX30 are so darn similar, Infiniti made the decision to just sell them both under the QX30 name. This might seem stupid to most, but to Infiniti – and the crossover-buying masses – this is actually a pretty logical move. The QX30 arrives in mid-2016. On the base end there's the standard QX30, then there's the lower-riding QX30S, and finally, the higher-than-standard-riding QX30 AWD. They all come with a 2.0-liter turbocharged four-cylinder engine and a seven-speed dual-clutch transmission. They're also practically identical to the Mercedes-Benz A-Class and GLA-Class, except for the swoopy sheetmetal. But even Mercedes sells its cars as two separate model lines. If you're not confused enough yet, feel free to read more in the press release below. Related Video: Infiniti announces QX30 line-up in the AmericasInfiniti QX30 Premium Crossover set to go on sale in mid-2016 NASHVILLE, Tenn. – Infiniti today announced the line-up of its all-new QX30 premium active crossover for the United States and Canada. While sharing basic exterior and interior designs, the QX30 line will be offered in three unique versions, each with its own front and rear fascia, wheel design and interior themes: QX30: The crossover's highly sculpted exterior, unique stance and asymmetric cabin design exemplify Infiniti's design-led approach to product development. This version is sold in Europe and other regions outside of the Americas under the Q30 name. In the Americas, this model will be front-wheel drive. QX30S: With a lower stance, aggressive front and rear fascia, cross-drilled front brake rotors, 19-inch wheels and performance tires, the QX30S is the sports version of Infiniti's new premium compact line. It was shown at this year's Los Angeles Auto Show and is sold in other markets as the Q30S. QX30 AWD: With an intelligent all-wheel drive system, slightly higher ride height and off-road inspired front and rear valence panels, the vehicle is able to take on urban, suburban and winding rural roads in all driving conditions.

Infiniti spruces up the Q50 for 2018

Though overshadowed by the literally larger QX80 Monograph SUV concept, Infiniti's revised 2018 Q50 still made an appearance at the stand in New York. It joins a long list of cars including the Acura TLX, Hyundai Sonata, Mitsubishi Outlander Sport, VW Golf, and Toyota Sienna and Yaris that all went under the knife for the show. The Infiniti Q50's update may be one of the most mild, though, as it only consisted of cosmetic changes. Up front, the grille has been enlarged and given more prominent swoops at each corner. On the S version, sharp creases appear on either side of the primary grille and descend down to the lower, center grille. The outboard grilles of the front bumper have changed shape, too, and they now feature contrasting black plastic trim. The standard Q50 has a new bumper, as well, and though less aggressive than the S version, it still looks sporty with a more pronounced chin spoiler. Both iterations of the 2018 Q50 share the same tail end. The main change is in the rear bumper. A center diffuser has now appeared at the base. The contour of the diffuser is echoed by two creases in the bumper at progressively higher points. On the S model, the panel between the diffuser and the first crease is painted black, and the diffuser is painted in the body color. The standard model's entire bumper is painted in body color, and the diffuser looks to be a more muted black or gray. Inside, even fewer changes have been made. A new steering wheel with reshaped thumb grips is now included. Infiniti also added new stitching to the instrument panel cover and leather shift knob. You'll be able to examine all of these changes up close at an Infiniti dealer this summer when the cars arrive. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.