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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:

2020 Infiniti QX50 Luggage Test | Not infinity, but enough

The 2020 Infiniti QX50 is a comfortable five-seat luxury crossover that competes with the Audi Q5, Acura RDX, Volvo XC60, Lexus NX and others. If you’re interested in a QX50, itÂ’s probably got something to do with its impressive, technologically advanced VC-Turbo variable compression engine. It also has sumptuous swales of bodywork, a long list of driver-assist and safety features, and a solidly luxurious interior with a two-screen infotainment setup. The window sticker for the QX50 we drove recently in Essential trim says the seats were leatherette; if true, itÂ’s the most buttery fake leather out there. Still, the engineÂ’s the star. If performance is your only consideration, you can also get the VC-Turbo in the Nissan Altima sedan weighing 400 to 500-plus pounds less and at an MSRP starting $7,500 lower, a price spread that quickly expands as you option up the QX50. But if you want the QX50, itÂ’s probably because itÂ’s a crossover. You want to haul stuff. Which brings us to: luggage test. The QX50 has a cargo capacity of 31.1-31.4 cubic feet behind its raised back seat, which expands to 65.1 cubic feet with the rear seats down. That's more than most in its class, and the QX50Â’s cargo hold certainly looks big and usable enough. To test it, I had six roller suitcases at my disposal. Three would need to be checked at the airport, and one of those is particularly mondo (29x19x11, 26x17x10, 25x16x10). Three others were small enough to carry on (24x14x10, 23x14x11, 22x14x9). Several bags have four wheels that protrude and were counted in the dimensions. I lacked access to RiswickÂ’s wifeÂ’s fancy bag. An asterisk to all our luggage tests: Our crack team of test suitcases is empty. I know someone who can seriously overstuff a soft-sided bag, so depending on how you pack, your results may vary. The QX50 didn't arrive with a cargo cover, so that made things easier. My first stab at loading all those bags seemed promising — five out of six bags fit. Two of the big boys on edge, three carry-ons standing up. That would be one bag for every occupant, but hey, we can do better.  Standing them all up was the easy solution. This fits all six bags, and I'm certain they wouldn't fly forward in a hard stop. But the driver's rear view is impeded. I'd be annoyed to look back at this throughout a long trip. That biggest bag is the biggest offender, so can we just lay that one down? Sure, but we're back to just five bags fitting.

Weekly Recap: New bosses try to jump-start Cadillac and Lincoln

Both of America's domestic luxury brands seem to be stuck in neutral.
It's ironic that Cadillac and Lincoln got new bosses within days of each other this month. It's also a commentary on the fact both of America's domestic luxury brands seem to be stuck in neutral.