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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:

Cars most likely to be involved in accidents

Data from Insurify shows which models have the most accident-prone drivers behind the wheel. It also shows the proportion of the drivers of said vehicles with an at-fault accident on record in the past seven years, based on Insurify’s analysis of over 4 million car insurance applications. For reference, the national average is 10.78%, and each of these vehiclesÂ’ drivers represent a statistically significant increase over that. Now, it would be easy to infer that these cars are dangerous, but such is not necessarily the case. Remember, drivers cause accidents, not cars. These just happen to be the cars that accident-prone drivers drive. YouÂ’ll notice that many are mainstream, affordable cars, often with decent crash ratings. Also keep in mind that vehicle accidents are up since the beginning of the pandemic, so no matter what you drive, please drive safely. 10. Hyundai Ioniq This affordable, electrified vehicle platform sneaks into this list with 14.45% of drivers with a recent at-fault accident on record. 9. Lexus CT Another hybrid, this Prius-powered Lexus beats the national average at 14.57%. 8. Toyota Prius V Yet another hybrid, the larger but discontinued member of the Prius family sees 14.72% of its drivers with recent accidents. 7. Mazda CX-3 The Mazda CX-3, which is discontinued for the 2022 model year, sees the accident-prone making up 14.9% of its drivers. 6. Infiniti Q60 The second and final luxury car on this list has more accident-prone drivers than average, at 14.93%. 5. Subaru Impreza The first of two Subarus on this list has 15.1% of drivers with recent accidents on record. 4. Hyundai Genesis Coupe The Genesis Coupe was only on the market for a brief span before it was discontinued and Genesis spun off into its own luxury brand. That said, it too beats the national average for accidents, at 15.29%. 3. Subaru WRX Despite its standard all-wheel drive, the boy-racer WRX has 15.44% of drivers with a prior accident in the last seven years. 2. Kia Stinger We love the Kia Stinger, and had great luck with our long-termer that graced the Autoblog garage for a year. That said, 15.75% of its drivers represent have a recent accident on record. 1. Scion FR-S This fun two-seater attracts the most accident prone drivers, with 15.87% with recent at-fault crashes. Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

2017 Infiniti Q30 First Drive

Audi and BMW have owned the premium C-segment for almost a decade now thanks to the A3 and the 1 Series (and 2 Series). Benz's A-Class has become less of a retiree's option and has spawned a popular (if not particularly good) sedan (the CLA) and a crossover (GLA). Down in the lower-class decks, machinery from Subaru is punching well above its weight, while Volkswagen's Golf owns the market in Europe. This all left perennial premium pretenders like Lexus and Infiniti with a problem: how to convince buyers their C-segment machinery was genuinely premium if they were based off a volume-selling donor body from Toyota or Nissan? Mercedes-Benz opened an odd window of opportunity for Infiniti. See, Benz's parent, Daimler, and Infiniti's motherships, Renault and Nissan, have had a technical alliance since 2010. A big technical alliance. So Infiniti was able to develop its hatch to sit atop the A-Class chassis, powertrain, and suspension architecture, though you'd barely know it by looking at the Infiniti from the outside. It has a style all its own, and you're not going to mistake a single angle on the Q30 for anything that comes out of Stuttgart. Nobody makes deeper cuts and curves into its metal than Infiniti. The Japanese brand claims that design is at its core, and whether you love or hate that design, it's hard to argue that point. The Q30 feels like a nicer, easier, more luxurious place than the A-Class on which its based. "Infiniti design is very three-dimensional on every panel. We want to give the sense and the feeling that every Infiniti has been made by an artisan, by hand, not by computer," the company's London-based design boss, Simon Cox, argued. Some will love it, some will hate it, and Infiniti can live with it either way. The point is that the brand is now on the field in a segment that is projected to keep growing at more than 9.4 percent globally, and it got there at a fraction of the normal cost of an all-new car, without having any easily identifiable cap tips to the Benz's far more conservative exterior design. The Benz bits are more obvious inside. Infiniti did such a good job of grafting its design ideas onto the interior hard points that it feels like a nicer, easier, more luxurious place than the A-Class, even if the Benz will be between eight and 10 percent more expensive in most markets. The dash top is clean, swooping, and stitched together beautifully.