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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.

Infiniti extends long-wheelbase Q50 L for the Chinese market

Want to sell your luxury sedan in China? You're going to need a long-wheelbase model. Not because the still-dominant Chinese government mandates it, or because the customers are taller, but because Chinese buyers tend to like being chauffeured around in the back of their luxury sedans instead of driving themselves, so the priority is on rear-seat space over driving dynamics.
We've seen the likes of Audi, BMW, Cadillac, Mercedes-Benz and Volvo all roll out long-wheelbase versions of their compact and midsize sedans specifically to cater to Chinese tastes. Even Infiniti - which now bases itself in Hong Kong - offers a long-wheelbase Q70 L not only in China but around the world, and has now bolstered its extended offerings with the reveal of the Q50 L, set to debut at the Chengdu Motor Show later this month.
Set to be produced locally for the local market, the Q50 L adds nearly two inches to the wheelbase of the Q50 to the benefit of rear-seat legroom. Power comes from Infiniti's 2.0-liter turbo four offering 208 horsepower and 236 pound-feet of torque, driving to the rear wheels through a seven-speed automatic transmission with drive-by-wire steering.

Infiniti Q70 won't live to see 2020

The Infiniti Q70 won’t be returning for the 2020 model year, effectively killing InfinitiÂ’s large luxury sedan. This news comes to us via a report from Motor Authority, citing “the automaker” and Infiniti spokesperson Kyle Bazemore. WeÂ’ve reached out to Infiniti to confirm the news, but it doesnÂ’t strike us as a surprising move whatsoever. Update: Infiniti confirmed the Q70 won't be sold in the U.S. or Canada for the 2020 model year. Back in July of this year, Nissan made it clear that we should expect 10 percent of its models to be cut from its global product lineup. We speculated then that the Q70 and Q70L would be part of these cuts, as itÂ’s the manufacturerÂ’s worst-selling model. To no oneÂ’s surprise, that eventuality came true. Infiniti moved 4,479 Q70s and Q70Ls in 2018, making it a super low-volume vehicle in a tough segment. Back in the mid-2000s, Infiniti topped 20,000 sales of its largest luxury sedan (not named the Q70 at the time). Cars like the Mercedes E-Class, BMW 5 Series and Audi A6 are all more enticing buys next to the aged Q70 — a slightly cheaper base price was the last stand for this vehicle, but it looks like a good deal wasnÂ’t enough to save it from our crossover apocalypse. Infiniti SUV sales are up, as the QX80 continues to gain more ground in 2019. More folks are opting for the raised and rugged options than smooth and comfortable sedans across the industry, which is why we continue to see news like this. Unfortunately, the Q70 isnÂ’t riding off into the sunset in any sort of glory. We can trace the Q70Â’s lineage back through a few name changes (Q45 into a series of M cars like the M45 and M56). Its oldest ancestor would be the Infiniti Q45, which was a revolutionary car back in the early 1990s. It featured an active hydraulic suspension system that aimed to provide a supremely comfortable ride and flat cornering at the same time. When equipped with the suspension system, hydraulic actuators on each wheel were able to counter the forces exerted on it from cornering, braking and acceleration. And remember, this was 1991!  Transitioning back to today, Nissan and Infiniti have made it clear that EVs will be the future. We know that weÂ’d love to see another industry-changing flagship sedan from Infiniti, and a fully electric vehicle might just be the way to go about it. Anybody wanting for a production version of the Q Inspiration Concept?