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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 Q50 Eau Rouge revealed ahead of Detroit

As fast as Infiniti is on the track with its sponsored Formula One racecar, the automaker sure is taking its time releasing details for the Q50 Eau Rouge Concept. This performance- and aero-tuned version of the Q50 sedan is heading for a big debut at the Detroit Auto Show, and Infiniti just released a new image and some more info on what we can only hope is a glimpse at future Infiniti Performance Line (IPL) products.
Influenced by the Red Bull Racing program, Infiniti's design team gave the Q50 a substantial once over with the concept getting an entirely new body compared to the production version of the luxury sedan making it both lower and wider. Previewed by an earlier teaser, the face of the Q50 Eau Rouge Concept has a mean look with massive intakes and a carbon fiber splitter. This new image also shows off additional cues like the lightweight, 21-inch wheels as well as the carbon fiber roof, side sills and door mirrors. While we only get this single image of the Q50 Eau Rouge Concept, Infiniti promises a carbon fiber rear splitter, dual exhaust and a "large integrated rear spoiler."
There is still no word on what handling or engine upgrades are in store, but hopefully those GT-R-inspired hood vents are only a hint at something monstrous lurking beneath the hood. Check out the full press release posted below for a few more details on the car, but we expect Infiniti to drop some more info on the Eau Rouge Concept before its official debut.

2025 Infiniti QX80 First Drive Review: So close to being great

NAPA, Calif. – Confession time. I kind of forgot that the Infiniti QX80 exists. Sure, itÂ’s gotten a refresh or two in the past few years, but it's essentially been the same big olÂ’ three-row SUV since 2010. IÂ’m pretty sure I used to call it Fudgie the Whale. Or maybe it was Pudgie the Whale. Like I said, itÂ’s been a minute. Now IÂ’ve gotten a taste of the 2025 QX80 and hey, what do you know, there is a lot to like. The third-generation of the body-on-frame SUV goes big on tech, style and comfort, making it a respectable triple into the right-center gap. However, its ride quality keeps the QX80 from being a home run. FudgieÂ’s V8 was nixed in favor of a 3.5-liter twin-turbo V6 good for 450 horsepower and 516 pound-feet of torque. Sure, it doesnÂ’t sound quite as good as the older powerplant, but it produces more power and better fuel economy to boot – 18 mpg combined with rear-wheel drive and 17 with four-wheel drive. The old one managed only 15 mpg with four-wheel drive. With low-mpg numbers like these, thatÂ’s actually a huge difference. The new turbo V6 is well-mated to a nine-speed automatic transmission, putting the power down to the rear wheels as standard in Pure and Luxe trims, or all four wheels as an option with those trims or as standard with the higher Sensory and Autograph. There are no complaints about power delivery. It has more than enough grunt for merging and the transmission downshifts readily for easy passing. There are five drive modes as well as a Personal setting, but I spend my time alternating between Standard and Sport. The latter tightens up the steering and powertrain, allowing the SUV to hustle fairly well on a twisty road without much body roll. ItÂ’s no Mercedes-AMG GLS, but starting at under $85,000 including destination, itÂ’s not nearly as expensive either. ItÂ’s when youÂ’re just toddling around town that the ride quality becomes a problem. All but the base Pure trim comes equipped with an “Electronic Air Suspension” and “Dynamic Digital Suspension,” the latter function monitoring the QX80Â’s motions to electronically apply damping forces. This isnÂ’t necessarily anything new in the automotive world, but other manufacturers just do it better. Up and down motions are well-controlled, but IÂ’ve been in row boats with more side-to-side stability. My head gets tossed around like IÂ’m piloting a Jeep on a dusty back road, and all IÂ’m doing is driving the paved streets of Napa Valley, California.