2004 Infiniti G35 Base Coupe 2-door 3.5l on 2040-cars

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Infiniti sees a bright future for the luxury sedan

One of the four new models that Infiniti will release in the coming years is an electric sedan previewed by the Vision Qe concept. Investing in a body style that many of the brand's peers and rivals are pivoting away from might sound odd, but executives at Infiniti still see a demand for sedans. "For the U.S. market, the sedan segment is still a very relevant segment. We have a ton of history, and heritage, and hugely passionate fans. So with that kind of passion, we're always getting asks for that kind of piece," Bob Welby, Infiniti's senior director of operations, told Motor1. The publication cited older, Nissan Z-derived sedans like the G35 and the G37 as models that could inspire Infiniti as it brings its first electric sedan to the market. These cars were aimed squarely at European sport sedans like the BMW 3 Series, and they put a much bigger focus on performance than on comfort while remaining pegged on the luxury side of the spectrum. They enjoy a relatively loyal following in 2023. Later known as the Q40, the G37 retired at the end of the 2015 model year and passed the torch to the Q50, which remains in production today but has nearly reached the end of its life cycle. When it retires, it will leave the Nissan-owned brand without a sedan in its range for the first time since its inception: The bigger Q70 retired at the end of the 2019 model year and the full-size Q45 was axed after 2006. In contrast, the current Infiniti lineup includes four SUVs. This focus on high-riding models won't change, even if the sedan sticks around. "SUVs have become another emerging strength of ours over the past decade," Welby said. "That's absolutely going to be part of our story." The next-generation QX80 is notably around the corner. Infiniti previewed it with a close-to-production concept called QX Monograph.   Green Infiniti Electric Sedan

Infiniti's new VC-T changes the rules of small turbocharged engines

The upcoming Infiniti QX50 crossover does not get our pulse racing, no matter how shapely the QX Sport Inspiration concept that previews it may be. No midsize SUV does, to be fair. But it has something special under the hood – the world's first production variable-compression-ratio engine. That means the QX50's 2.0-liter turbo four, which makes 268 horsepower and 288 pound-feet of torque, will have up to 27 percent better fuel economy. Here's how it works. The trend of moving to smaller, turbocharged engines carries with it one big falsehood. Under low load when the turbo isn't needed, these engines are less efficient than an equivalent engine without a turbo because of the low compression ratio the turbo requires. That is, if you never need the extra power, you're wasting fuel. Turbocharged (and supercharged) engines use a lower compression ratio to prevent detonation. When you force extra air in a cylinder and mix it with fuel, it's more likely to prematurely go boom. Lowering the compression ratio prevents this problem, but it's less efficient. Infiniti's VC-T promises the best of both worlds, with a compression ratio that ranges from 8.0:1 for high-power turbo needs to a 14.0:1 ratio for fuel-sipping efficiency. At its heart the VC-T engine is a simple idea, but it's complicated to explain. Consider yourself warned. The photo below from Infiniti serves as a good visual overview. For the truly nerdy, this patent application covers the mechanical concept. Instead of having the pistons connected to the crankshaft, Infiniti's engine has a pivot arm with a connection on each end. One end connects to the piston, the other connects to a second lower shaft, which is controlled by an actuator arm. At any given time the engine's pistons move up and down according to the lobes on the crankshaft. But the actuator arm can change the angle of the pivot arm up and down. That is, the pistons still move in the same motion with the same stroke, but phase the entire stroke up or down. Move the pivot up and there's less room at the top, which means a higher compression ratio. Move the pivot down and the compression ratio goes down, too. As an added bonus, the lower shaft eliminates the need for counter-rotating balance shafts. Infiniti says this system works constantly and can vary the compression ratio to any number between 8:1 and 14:1. It also uses electronic variable valve timing on the intake valves to switch into Atkinson-cycle combustion for greater efficiency.

Infiniti all but certain to produce Q50 Eau Rouge [w/video]

These pages are full of projects that automakers have tried to get moving but never quite managed to. And Infiniti has had its fair share, particularly when it comes to high-performance models. It's tried to drum up excitement with the Infiniti Performance Line and with its partnerships with Red Bull Racing and its star driver, but models like the G37 IPL and FX Sebastian Vettel edition never amounted to a real challenge to the likes of Mercedes-AMG and BMW's M division. There was talk of a sedan version of the Nissan GT-R to wear an Infiniti badge, but those rumors amounted to even less. The Q50 Eau Rouge, however, could finally be the ticket.
The concept debuted at the Detroit Auto Show a few months ago without an engine (or at least not one we were made aware of) but with all manner of carbon-fiber aerodynamic components. It then rolled in to Geneva with the beating heart of the GT-R - a 3.8-liter twin-turbo V6 tuned to 560 horsepower and 442 pound-feet of torque - and arrived in Beijing earlier this week in an even more evolved form. And according to the chatter coming out of China (whose financial hub of Hong Kong, incidentally, serves as Infiniti's home base), it's all but certain to be approved for production.
"At this stage it would take more to stop the car getting made than to start things," says Auto Express, citing an unnamed source. The finished product would look much like the versions we've seen until now, and while it would be available in an array of colors, that metallic blood red could emerge as Infinit's signature performance color.