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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.

Another Infiniti Q30 image found ahead of Frankfurt debut

Infiniti will introduce the new Q30, its smallest vehicle ever and its first foray into the compact, premium hatchback segment, next month at the 2015 Frankfurt Motor Show. The company confirmed the debut when it issued a single image of the new car last month. Now, we have a second shot. Released by the Twitter account of Infiniti's British outfit, the new shot is part of the #Q30Challenges campaign, which asks users to pick an object they'd like to reinvent. It shows the stylish hatch in the same bronzish-brown hue featured in the first image, but gives us a very wide front three-quarters view. We can see Infiniti's trademark C-pillar treatment, as well as a pair of wavy character lines. The shot also provides an especially good view of the Q30's long hood. The Q30 enters a segment that's nothing if not competitive, even here in the United States where small cars are a relatively recent phenomenon from premium automakers. Audi offers its A3, BMW is in the game with its 2 Series, Mercedes has its CLA and GLA and Lexus competes with the long-running CT 200h. The Q30 will be part of a two-pronged attack that will also include a QX30 crossover. We'll have a whole heap of additional information and images of the all-new Q30 when it makes its global debut next month in Germany. Stay tuned.

Infiniti Q60 Coupe spied in production guise

Here is the best news we've had all day: the production Infiniti Q60 Coupe will bear an uncanny resemblance to the concept car that previewed it earlier this year in Detroit. We know this thanks to our very first round of spy photos of the heavily camouflaged production car. Although there are only three images to draw from, we've got a clear picture of the concept-inspired lines of this new two-door. In particular, the front and rear fascias look to draw a lot of inspiration from the concept. In front, the headlights look to be similar in shape, while the double-arch grille looks largely unchanged from what the company previewed. Perhaps the biggest change up front is around the fog lights, which look to sit in far more conventional housings. Also gone is the Q60 Concept's Formula One-inspired chin, possibly in part due to the company's (and parent Renault's) perilous position as a title sponsor for the Red Bull Racing team. The taillights reinforce the concept car inspiration, retaining a similarly svelte shape and tying in with a small trunk lid. Also like the Q60 Concept, our spies report that a twin-turbocharged, 3.0-liter V6 will be on offer, likely as the range-topping engine. We'd expect the volume motor to be the Mercedes-Benz 2.0-liter, turbocharged four-cylinder found in the likes of the new Q30, as well as the CLA-, GLA-, and A-Class. It's also certainly possible that Infiniti's long-serving 3.7-liter V6 will be available in some form. Whatever engines arrive, we can expect six-speed manual and seven-speed automatic transmissions to be the sole options. Have a look at the photos up at the top of the page. And for comparison's sake, we've included the official Q60 Concept gallery down below just under the video showing a 360-degree view. Take a peek at both and let us know what you think of Infiniti's work.