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2021 Infiniti Q50 Red Sport 400 Road Test | Z engine preview

There isn’t much reason to take another look at the 2021 Infiniti Q50 Red Sport 400 on the surface. ItÂ’s largely the same sedan as it was when we drove it in 2016: powerful and stylish, but lacking in tech and polish. However, whatÂ’s under the hood is of far more interest to us today than it was just a year ago. ThatÂ’s because the 3.0-liter twin-turbo V6 powering this Infiniti is migrating over to the next Nissan Z car. Nissan announced that the production Z would get a 3.0-liter twin-turbo V6 not long after it revealed the Z Proto. There are no other twin-turbo V6s in NissanÂ’s arsenal but this one, meaning that the VR30DDTT engine in this Infiniti is destined for the Z — plus, there's photo confirmation. The big question remaining is: How new or different will it be? Its most potent state of tune is rated at 400 horsepower and 350 pound-feet of torque. ThatÂ’s a high number versus most other boosted six-cylinders, and perhaps most importantly, itÂ’s more potent than the 382-horsepower 2021 Toyota GR Supra 3.0. As weÂ’ll soon explain, though, numbers only tell part of the story. Transplanting the InfinitiÂ’s V6 into the next Z surely wonÂ’t be without challenges, either. Nissan is promising a six-speed manual in the Z. Meanwhile, this engine is exclusively paired with a traditional seven-speed automatic transmission in the Q50 and Q60. Nissan hitched this engine up with a manual in a 370Z SEMA show car years ago, but now it must devise a production car solution. ThereÂ’s also the question of whether Nissan will use the same seven-speed as the automatic option in the Z, or come up with something a bit more aggressive. The cost-efficient (and likely) solution would be reusing the seven-speed, not unlike the Supra's eight-speed traditional automatic.  Having all of this in mind, we set out to see how this engine sits today as a preview to the Z.  Going from the big, naturally aspirated VQ series V6 to a smaller twin-turbo V6 will bring about the obvious changes. The rabid and uncouth personality of the outgoing VQ is nowhere to be found in the sweet and smooth new engine. ItÂ’s not quite the silky, effortless BMW inline-six found in the Supra, but it brings an air of refinement and maturity that's simply not there in the current Z. And then thereÂ’s the torque. All 350 pounds of twist are available at 1,600 rpm in the Q50 Red Sport 400, which means the shove in the back would theoretically start just off idle.

Nissan alters all CVTs to act less like a stretched rubberband

Among automotive enthusiasts, no one seems to hold a neutral opinion when it comes to continuously variable transmissions. CVTs are either praised for their ability to boost fuel economy or chided for their occasionally poor driving dynamics. Nissan is among the masters of these un-shifting gearboxes in the US, and it uses them in many vehicles in its lineup. However, for the 2015 model year, several models are getting a software update to make their CVTs a bit more like a conventional automatic.
To give drivers the option of feeling gearshifts while on the road, Nissan is adding its D-Step Shift Logic feature to the CVTs in multiple vehicles. Steve Powers, Nissan's senior manager of powertrain performance, told Autoblog the system forces the transmission to "hold a ratio and then shift" to simulate the way that a traditional automatic would. It's simply a change in software, but the company "can't do it to older CVTs," he said, because it would require changes to transmission logic, as well. According to Automotive News, the upgrade is coming to the 2015 Versa, Versa Note (pictured above), Sentra, V6-equipped Altima, Pathfinder and Quest. "We're rolling it out to all programs," said Powers.
Interestingly, buyer perception appears to be pushing the upgrade. John Curl, a Nissan North America regional product manager, told Automotive News that the decision to add the tech partially comes because some owners are bothered that the CVTs aren't changing gears. According to Powers, D-Step "avoids the rubber band feel," that many drivers didn't like. The different sensation of these transmissions seems like something consumers would notice during the test drive, or that the salesperson would inform them about. The same issue cropped up last year when the company was facing customer satisfaction problems among new buyers customers' unfamiliarity with the gearboxes.

Nissan 370Z Nismo Roadster Concept looks ready to roll

Honestly, we're kind of surprised this hasn't happened already. The Nissan 370Z Nismo is a pretty cool little package, better than ever in its 2015 model year iteration. So why not apply that same, go-faster, look-cooler formula to the topless Z Roadster? That's exactly what Nissan's done here in Chicago, showing the 370Z Nismo Roadster you see here. Aesthetically, it's pretty much the same as the coupe – except, of course, for the folding cloth roof that neatly stows behind the front seats. It's mechanically the same, too, with Nissan's 3.7-liter naturally aspirated V6 underhood, making 350 horsepower. Oddly, the concept car uses the company's seven-speed automatic transmission, but as Nissan explains, the majority of Z Roadster buyers spec their cars with the slushbox. "While it is only a design study at this point, we think the 370Z Nismo Roaster Concept would be a tremendous addition to the long and distinguished history of Z sports cars," Pierre Loing, Nissan's vice president of product planning in North America, said in a press release. It sure looks production-ready to us. Nissan 370Z NISMO Roadster Concept makes world debut at 2015 Chicago Auto Show - Combines legendary NISMO performance, style and technology with Nissan 370Z Roadster open-air motoring excitement - One-off design study created to gauge market interest in an ultimate factory Z® Roadster - Offers unique engine, suspension, exterior and interior features versus standard Nissan 370Z Roadster models – including 350-horsepower 3.7-liter V6 and NISMO-tuned suspension - Would join current Nissan 370Z NISMO coupe model, expanding NISMO lineup to five models As the heart and soul of Nissan performance for both the track and on the street, NISMO continues to set the standard for straight-from-the-factory enthusiast vehicles. The lineup of NISMO production models for 2015 includes the GT-R NISMO, 370Z NISMO, JUKE NISMO and JUKE NISMO RS. Yet as the popularity of NISMO models continues to grow – the 2015 GT-R NISMO is sold out, the 370Z NISMO accounts for 20 percent of total sales and JUKE NISMO models for about 15 percent – one group of performance enthusiast remains left out: Open-air sports car lovers. Enter the Nissan 370Z NISMO Roadster Concept, which makes its world debut at the 2015 Chicago Auto Show. The custom vehicle combines the long list of 370Z NISMO Coupe performance equipment with a modified 370Z Roadster body and interior.