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Infiniti's variable compression engine in the 2019 QX50 is the first of its kind

The world's first variable compression ratio engine is here, in a production car. That car is the 2019 Infiniti QX50, debuting this week at the Los Angeles Auto Show. The midsize crossover has seen a refresh that has brought it an all-new platform together with new driver assist features, but it's the engine that's the centerpiece here. Nearly everything is continuously variable under the hood of the QX50 – not only the new shift-by-wire XTRONIC CVT. The new VC-Turbo gasoline engine is able to change its compression ratio from 8:1 to 14:1, or anything in between depending of the driving situation; whether there is need for top-end power or turbodiesel-like torque from low revs, or optimized fuel economy. The pistons' reach is continuously adjusted by an electric "Harmonic Drive" motor, which controls a multi-link system, affecting the top-dead-center of the pistons and changing the compression. The engine can also switch between efficiency-maximizing Atkinson cycle and regular combustion cycle, on the go – and there's both multipoint injection and gasoline direct injection employed. The result is 268 horsepower at 5,600 rpm and 280 pound-feet of torque at 4,400 rpm; good figures for a 2.0-liter four-cylinder gasoline engine with a single-scroll turbocharger. Infiniti says that the FWD version's fuel economy of 27 miles per gallon combined is 35-percent better than the previous-generation V6 engine; in AWD guise, it reaches 26 mpg, which is a 30-percent improvement. The new engine is pretty much all-aluminum, but the vaguely magical-sounding "transformative multi-link components" behind the variable compression system are made from high-carbon steel alloy. The engine's multi-link system also enables it to do away with any balancing shafts, and Infiniti compares its smoothness to a V6 rather than a regular four-cylinder. In addition to the aforementioned tech, the VC-Turbo engine has the world's first active engine mount vibration damping system to smoothen its operation even further. Related Video:

2014 Infiniti Q50 priced at $37,605*

Infiniti has released full pricing information for its new 2014 Q50 line, which, as you're probably aware, replaces the well-liked G-series sedan. You may be wondering why this is news, as Infiniti announced pricing for its new Q50 sedan back in March. Apparently, though, those earlier prices applied only to the special pre-sell offer announced earlier this year and are only good for cars ordered by October 31, 2013.
Starting in November, base 2014 Q50 models with the automaker's 328-horsepower 3.7-liter V6 engine will begin at $37,605 (*including a $905 destination fee), while the sportier Q50S model will begin at $44,105. Adding all-wheel drive to either model costs an additional $1,800 over the standard rear-wheel-drive models. Regardless of engine or whether it's rear- or all-wheel drive, the Q50 comes with a seven-speed automatic transmission.
Opting for the 2014 Infiniti Q50 Hybrid will get the buyer a powertrain consisting of a 3.5-liter V6, a 50kW electric motor and a lithium ion battery that offers up a total power output of 354 hp and a highway fuel mileage rating of 36 miles per gallon, all for a starting price of $44,855, which includes the Premium group. The most expensive version of the new sedan is the Q50S Hybrid with all-wheel drive. That model carries an MSRP of $49,055.

2022 Infiniti QX55 Review | Price, performance, size, comparisons with QX50

Carmakers love calling them coupes, but as they have four doors, that's still a tough sell for our dictionary. So, let's go with fastback SUV for now, and say that the 2022 Infiniti QX55 is one of the best-looking examples of the growing bunch. Even if Infiniti wasn't originally intending to lop off the back of its QX50 compact crossover, the afterthought project to turn it into the QX55 was nevertheless a successful one. When parked next to a BMW X4 or Audi Q5 Sportback, we know the QX55 would do the prettiest job sprucing up the driveway. It's nicely proportioned and tastefully detailed with just a hint of Infiniti's forever cool FX SUV at the rear. The interior is also interesting to behold and pleasing to touch. Unfortunately, the QX55's aesthetics are its main selling point. Driving it is a real letdown as its underwhelming handling and soul-sucking continuously variable transmission just aren’t up to snuff for a luxury model. It makes the QX55 feel like you're driving a Nissan Altima. And even if you're less concerned with a car's driving dynamics, the QX55's odd and antiquated tech interface is sure to be a put-off after seeing what BMW, Audi and Mercedes have to offer. Of course, all of this could be said of the QX50. At least the QX55 has aesthetics on its side.   What's new for 2022? The QX55 is an all-new model, although the QX50 upon which it's based has been around since 2019. 2022 Infiniti QX55 View 25 Photos What's the QX55 interior and in-car technology like? The QX55 interior is a highlight. ItÂ’s lifted from the QX50, and thatÂ’s good. ItÂ’s just as flowy as the exterior, and on our Sensory trim level test car, it was fitted with sumptuous red and black leather on nearly every surface, plus some natural-finish wood trim across the dash and doors. Lower trim models arenÂ’t quite as flashy but still feature the same attractive design. It's all suitably elevated for a luxury car. On the other hand, the dual-screen infotainment system is at best bizarre and at worst antiquated.  Most infotainment functions are accessed and operated via the touchscreen at the bottom of the stack. That placement makes it easy to reach but hard to see. The top screen controls the navigation system and Apple/Android integration, is of a noticeably lower resolution, and is controlled either by touch or with a control wheel on the center console next to the shifter.