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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:

Infiniti prices Q50 2.0t from $34,855, hybrid from $47,955

Infiniti has a whole range of new engines coming out for the Q50. And that means a new pricing scheme to go along with it. The bottom line is that you can now get into the sports sedan for as little as $34,855 (inclusive of the $905 destination charge). That price is for the 2.0-liter turbo model that's the new point of entry into the range with 208 horsepower on tap. It also represents a much lower starting price for the 2016 model than the one it replaces, which started at over $38k for the base Q50 3.7. It also undercuts the price of the comparable Audi A4, which also comes with a 2.0-liter turbo four priced from $38,250. The BMW 3 Series straddles the divide with two models equipped with 2.0-liter turbo fours: the less potent 320i with 180 hp priced slightly below the Infiniti at $34,145, and the more powerful 328i with 240 hp for $39,345. If you want all-wheel drive or the Premium trim, you'll need to cough up an extra couple grand for each, which is a larger premium than the Japanese automaker charged before. Pricing for the V6-powered 3.0t and Red Sport 400 models are still to come. But along with the 2.0t sticker, Infiniti also released pricing for the hybrid model, which only comes in Premium spec and starts at $47,955. That's a couple grand more than the outgoing version cost at $45,305. For the time being, the top of the line is the Q50 Hybrid Premium AWD, which goes for $49,955. Related Video: INFINITI ANNOUNCES U.S. PRICING FOR 2016 Q50 2.0T AND Q50 HYBRID PREMIUM MODELS First two of four available Q50 engines available now, new 3.0-liter V6 twin turbo-equipped models to follow later this year NASHVILLE, Tenn. – Infiniti today announced pricing for the 2016 Infiniti Q50 2.0t and Q50 Hybrid Premium models, which are on sale now at Infiniti retailers nationwide. Pricing starts at $33,950 for the Q50 2.0t and $47,050 for the Q50 Hybrid Premium. The Infiniti Q50 sports sedan, Infiniti's best-selling model, enters the 2016 model year with an array of significant enhancements, starting with the addition of three new turbocharged engines and continuing with new technologies designed to enhance the already strong driving dynamics of Infiniti's best-selling model. The 2016 Infiniti Q50 is now offered in an expanded range of trim levels, each in a choice of rear-wheel or all-wheel drive – Q50 2.0t and Q50 2.0t Premium, Q50 3.0t Premium, Q50 Hybrid Premium, Q50 3.0t Sport and Q50 Red Sport 400.

Nissan recalls 640k crossovers for wiring issue, hood release

The National Highway Traffic Safety Administration has announced two separate recalls affecting hundreds of thousands of Nissan crossovers. The larger of the two involves the electrical system in 2008-2013 model year Rogue CUVs. In affected vehicles, a mixture of moisture and salt seeping in through the carpet on the driver's side could cause the harness connector to short, potentially causing a fire. The issue involves Nissan Rogues manufactured between March 7, 2007, and November 26, 2013, as well as examples of the 2014 Rogue Select manufactured between September 23, 2013, and July 2, 2014. All told, that comes to an estimated 468,815 units in the United States alone. The second recall affects the relatively smaller quantity of 170,665 vehicles, made up of 2013-14 Nissan Pathfinder, 2014 Pathfinder Hybrid, 2013 Infiniti JX35, 2014 QX60 and 2014 QX60 Hybrid models. (The JX35 was recently relabeled as the QX60 under Infiniti's new nomenclature.) The issue affecting some of those vehicles revolves around a hood release cable that may not properly latch. Nissan is notifying owners of the affected units to bring their vehicles in to have the wiring checked and to replace the harness connector and seal in the former case, and to have the hood release mechanism modified in the latter. All told, an estimated 639,480 vehicles are being recalled as part of the two campaigns. RECALL Subject : Electrical Short Due to Water Seepage Report Receipt Date: JAN 26, 2015 NHTSA Campaign Number: 15V032000 Component(s): ELECTRICAL SYSTEM Manufacturer: Nissan North America, Inc. SUMMARY: Nissan North America, Inc. (Nissan) is recalling certain model year 2008-2013 Nissan Rogue vehicles manufactured March 7, 2007, to November 26, 2013, and 2014 Nissan Rogue Select vehicles manufactured September 23, 2013, to July 2, 2014. The affected vehicles may experience an electrical short in the harness connector due to a mixture of snow/water and salt seeping through the carpet on the driver side floor near the harness connector. CONSEQUENCE: An electrical short can cause a vehicle fire. REMEDY: Nissan will notify owners, and dealers will inspect the kick panel wiring harness connector and will if necessary install a new harness connector and waterproof seal, free of charge. The manufacturer has not yet provided a notification schedule. Owners may contact Nissan customer service at 1-800-647-7261.