2000 Infiniti Q45 T Sedan 4-door 4.1l on 2040-cars

Auto blog

NHTSA opens investigation into Nissan's handling of airbag recall

In March of 2014, Nissan recalled eight models among its Nissan and Infiniti brands, totaling more than one million vehicles, over faulty occupant classification system software controlling the passenger airbag. The company discovered a variety of factors that would interfere with the system's ability to detect an adult passenger in the shotgun seat, resulting in an illuminated warning on on the dashboard and the passenger airbag not deploying in an accident. Yet 124 complaints submitted to the National Highway Traffic Safety Administration since the recall allege that the dealer-installed fix hasn't actually fixed the problem; some consumers say the problem persists after multiple trips to the dealer. The Detroit News reports that NHTSA is opening an investigation into the matter to determine whether a new recall is needed. The occupant sensor has been a bugbear for Nissan over the past couple of years; a much smaller recall for the issue in 2013 covered five of the eight vehicles that were recalled in 2014, and that earlier recall also continued to generate complaints after the issue had supposedly been fixed. At the same time, the company learned that in two instances there was another twist, where the dashboard warning wasn't illuminated but the passenger airbag still didn't go off in an accident. Nissan isn't alone, though, with airbag recalls on a steep upswing across the industry even before the Takata debacle.

How Lexus, Infiniti plan to win back luxury buyers from Germans, Tesla

DETROIT — Japanese luxury auto brands Lexus and Infiniti have used the Detroit Auto Show to test new ways to regain momentum against Germany's prestige automakers and Tesla. The Japanese are fighting to gain ground in the U.S. luxury market as Audi and Mercedes-Benz have expanded sales and Tesla has provided a fresh alternative to established brands. Last year, Lexus suffered a 7.6 percent slide in U.S. sales. Acura's 2017 sales fell 3.9 percent from 2016. Infiniti pushed up sales by 11.3 percent — but by selling almost twice as many sport utility vehicles as cars. However, Infiniti's total 2017 sales of 153,415 vehicles put it behind the leading Germany luxury car brands, as well as Acura, Lexus and Cadillac. The Lexus LF-1 Limitless concept SUV model, with its futuristic looks and "Chauffeur mode" semi-autonomous hands-off driving capabilities, signals that Toyota's luxury brand may start to focus more on SUVs than traditional large sedans. The LF-1 also previews a futuristic navigation technology that anticipates where the driver is going based on driving habits and history, and provides hotel recommendations or other concierge services. View 13 Photos "We don't want to be the 'race car' brand; we don't want to be the 'quiet ride' brand. We want to be the brand which is emotionally connected with the customer," said Cooper Ericksen, vice president of U.S. marketing for Lexus. Lexus, Infiniti and Acura launched in the U.S. market in the late 1980s and took advantage of quality problems at Audi and a lack of innovation at the then-leading luxury brands, Cadillac and Lincoln. Now, the structure of the U.S. luxury market has changed. Four brands — Mercedes, BMW, Audi and Lexus — dominate. Tesla delivered 103,000 vehicles in 2017, its best year ever, though that total is still a small fraction of the overall luxury market. Tesla, meanwhile, is trying to overcome "production hell" and increase output of its more affordable compact Model 3 sedan. The highly anticipated car is just starting to reach customers — but with 400,000 preorders, 2018 could be a breakthrough year for Tesla. View 19 Photos In Detroit, Infiniti showed the Q Inspiration Concept sedan powered by a unique, high-efficiency variable-compression gasoline engine. While the prototype is not electric, its exterior might appeal to customers of the Tesla Model S.

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: