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A look inside Infiniti's variable-compression engine

We're sympathetic to anyone who had trouble understanding what's going on with Infiniti's new variable-compression engine. While we got a full tech briefing on the novel VC-Turbo back in August, the visual aids were lacking. The cutaway engine Infiniti brought to the Paris show fixes all of that. You can thank the little green and pink lines on the cutaway for making the whole idea a little more clear. Click through the gallery to see two lines – one green and one pink – that represent the different strokes allowing for different compression ratios. Remember, the compression ratio is the amount of volume in the cylinder on intake compared to the amount at the end of the compression stroke. Leave more room at the end and you lower that ratio. The length of the stroke doesn't change with this system, but where it sits along the cylinder does. Hence those two lines. The variable compression ratio allows this new turbocharged engine to maximize fuel economy when the turbo isn't needed by raising the compression ratio. It will see its first use in the next Infiniti QX50 crossover, previewed by the QX Sport Inspiration concept that's also on display in Paris, and has performance targets of 268 horsepower and 288 pound-feet of torque. After, it will migrate to other Infiniti and Nissan vehicles, with transverse front-drive-based applications first in line. Eventually, it's likely to completely replace Nissan's corporate 3.5-liter V6. We'll be poking around the engine a little more in Paris today to try and get some more info. For now, enjoy those cutaway images and those friendly little lines. Featured Gallery Infiniti VC-Turbo engine cutaway View 14 Photos Paris Motor Show Infiniti Nissan Technology Emerging Technologies engine 2016 paris motor show

2018 Infiniti QX80 reveals fresh face in Dubai

Infiniti has finally revealed its refresh for the Infiniti QX80 at the Dubai auto show, and it's amazingly mild. Not that we were expecting a particularly wild redesign, since even the QX80 Monograph concept that previewed the SUV still looked similar to the existing vehicle, but this is still a pretty low-key update. The main changes are in the front fascia, which was teased not long ago. It features headlights that sit higher up and inline with the top of the grille. The lights are more slender and swept back, too. The tops of the fenders sit higher as well, providing a more squared-off look, and the side fender vents have a new design. Beyond the nose job, there are hardly any other changes. The taillights are new, and the chrome finish over the license plate extends into them. The rest of the roof, doors, windows, basically all the stuff in the middle of the SUV look pretty much identical to the old QX80. Underneath the skin is more of the same. The interior is the same with the exception of some new materials and colors. Apparently the shift knob is new, too. The powertrain is a carryover as well, featuring the same 400-horsepower 5.6-liter V8 with either two- or four-wheel drive. The QX80 has one other somewhat noteworthy change, and that's the price. Base price on the two- and four-wheel-drive QX80 models increases $900 over last year's to $65,745 and $68,845 respectively. The new QX80 goes on sale by the end of this year. Related Video: Featured Gallery 2018 Infiniti QX80 View 27 Photos Image Credit: Infiniti Infiniti SUV Luxury dubai motor show infiniti qx80

Listen to the 2020 Infiniti Q60 Red Sport 400's screaming exhaust

The best thing about the 2020 Infiniti Q60 Red Sport 400 is its engine. That 3.0-liter twin-turbo V6 makes one of the better noises in the automotive landscape on its way to the 6,800 rpm redline. It makes 400 horsepower and 350 pound-feet of torque, and the engine feels every bit that strong. Peak power is made at a high 6,400 rpm, so it feels linear all the way up to that point. There’s no mistaking this for a naturally aspirated engine with the lag off the line, but once itÂ’s up and running, thereÂ’s no obvious fading of power in the higher rpms. As for the sound Â… itÂ’s also pretty spectacular. We took the Q60 out to some of our favorite deserted backroads and let it rip with a GoPro attached to the bumper. This particular Q60 Red Sport 400 is fitted with a more aggressive exhaust from Infiniti. ItÂ’s an axle-back exhaust, aptly named the “Axle-Back Sport Exhaust Kit.” Infiniti sells the exhaust on its official online parts store — thereÂ’s one available for the Q60 and another for the Q50. ItÂ’s currently listed for $707 and is backed by the original factory warranty. Buy it from the store, and then have the dealer fit it to your new (or old) car. WeÂ’ve driven Infinitis with this engine that donÂ’t have the sport exhaust installed, and theyÂ’re nowhere near as loud. And after driving one with the exhaust, itÂ’s safe to say the factory exhaust is a bit too quiet for our tastes. Starting the cold engine up in the morning is much more satisfying. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. And under load this exhaust sounds fantastic, too. In the cabin we hear loud intake whooshes, and on the outside we get to hear its screaming yowl. ThereÂ’s enough sound deadening in the cabin to make it refined and luxurious on light throttle applications, but the exhaustÂ’s sound doesnÂ’t ever disappear. A bit of drone sneaks in on the highway, but if you turn up the decent-sounding Bose audio system, it fades away. More cars could use legitimately aggressive exhausts like this one. Manufacturers continue to pump fake audio into the cabin over the speakers, but itÂ’s not as authentic as something like this. All thatÂ’s missing are bangs and pops on shifts, but we can live without them. Each downshift is delightful, and the overrun is music to our ears. Related video: