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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.

How Lexus, Infiniti plan to win back luxury buyers from Germans, Tesla

DETROIT — Japanese luxury auto brands Lexus and Infiniti have used the Detroit Auto Show to test new ways to regain momentum against Germany's prestige automakers and Tesla. The Japanese are fighting to gain ground in the U.S. luxury market as Audi and Mercedes-Benz have expanded sales and Tesla has provided a fresh alternative to established brands. Last year, Lexus suffered a 7.6 percent slide in U.S. sales. Acura's 2017 sales fell 3.9 percent from 2016. Infiniti pushed up sales by 11.3 percent — but by selling almost twice as many sport utility vehicles as cars. However, Infiniti's total 2017 sales of 153,415 vehicles put it behind the leading Germany luxury car brands, as well as Acura, Lexus and Cadillac. The Lexus LF-1 Limitless concept SUV model, with its futuristic looks and "Chauffeur mode" semi-autonomous hands-off driving capabilities, signals that Toyota's luxury brand may start to focus more on SUVs than traditional large sedans. The LF-1 also previews a futuristic navigation technology that anticipates where the driver is going based on driving habits and history, and provides hotel recommendations or other concierge services. View 13 Photos "We don't want to be the 'race car' brand; we don't want to be the 'quiet ride' brand. We want to be the brand which is emotionally connected with the customer," said Cooper Ericksen, vice president of U.S. marketing for Lexus. Lexus, Infiniti and Acura launched in the U.S. market in the late 1980s and took advantage of quality problems at Audi and a lack of innovation at the then-leading luxury brands, Cadillac and Lincoln. Now, the structure of the U.S. luxury market has changed. Four brands — Mercedes, BMW, Audi and Lexus — dominate. Tesla delivered 103,000 vehicles in 2017, its best year ever, though that total is still a small fraction of the overall luxury market. Tesla, meanwhile, is trying to overcome "production hell" and increase output of its more affordable compact Model 3 sedan. The highly anticipated car is just starting to reach customers — but with 400,000 preorders, 2018 could be a breakthrough year for Tesla. View 19 Photos In Detroit, Infiniti showed the Q Inspiration Concept sedan powered by a unique, high-efficiency variable-compression gasoline engine. While the prototype is not electric, its exterior might appeal to customers of the Tesla Model S.

Infiniti QX70 is fini, for now

We knew it first as the FX, debuting in 2003 as a bulgingly macho SUV/crossover thing with an impossibly long hood. It was quick and powerful, and lower-slung than typical SUVs, more like a tall wagon. Infiniti later dialed the cartoonishness of it back a few notches and started calling it the QX70. Now, the QX70 is going to take a little break, disappearing from the lineup for a few years while QX50 and QX80 redesigns are rolled out. The QX70 is sporty, with a 325-horsepower 3.7-liter V6. But it's an aging model and a bit of a slow seller - last year, Infiniti moved one-seventh as many QX70s as it did its kid-hauling cousin the QX60 - which seats more people (seven, to the QX70's five) and is less expensive. The QX70 was once popular like that, selling 30,964 as the FX in 2004. But that was long, long ago. Last year it sold 6,261. The QX70 nameplate is expected to be back in 2021 or 2022, in a redesign based on the Nissan Murano and built at Nissan's plant in Canton, Miss. Related Video: Featured Gallery 2015 Infiniti QX70 Plants/Manufacturing Infiniti Crossover SUV redesign