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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:

Race recap: 2015 British Grand Prix is a testament to timing

In front of his home crowd, Lewis Hamilton actually had to work for pole position at the British Formula One Grand Prix. The World Champion couldn't get on top of the setup for his Mercedes-AMG Petronas on Friday, lapping behind teammate Nico Rosberg and the two Ferraris. Come Saturday, after a few alterations and a whole lot of wing to clamp down on understeer, Hamilton returned to his regular program at the front, taking pole position by just over a tenth of a second from his teammate. Williams, thought to be headed for another stretch in the weeds a few races ago, showed its best strength all year. The Grove team got both cars on the second row and in front of the Ferraris, Felipe Massa qualifying ahead of teammate Valtteri Bottas, but they were eight and nine tenths behind the Mercedes'. Kimi Raikkonen out-qualified Ferrari teammate Sebastian Vettel for the second time this year, and only the first time in a straight-up battle with two healthy cars. But more than a second behind the two cars at the front, and with two nearly-impossible-to-pass Williams' in front, neither the Finn nor the German is happy with where they are. Daniil Kvyat claimed seventh, his side of the garage at Infiniti Red Bull Racing having got through the weekend to that point without a single complaint about their Renault power unit. Carlos Sainz, Jr. put a single Toro Rosso inside the top ten in eighth position, ahead of Nico Hulkenberg who did the same for Sahara Force India by slotting in ninth. The second Infiniti Red Bull driven by Daniel Ricciardo did have an unspecified engine complaint – his car kept "bleeding power" on the straights – but even so he managed to qualify tenth with his second-fastest lap. The stewards deleted his best lap because he ran three centimeters outside the track limits at Copse, an infraction that stung a few other drivers as well. Up in front, what would sting the Mercedes-AMG Petronas drivers the most was the start. That's when a dearth of grip struck both Hamilton and Rosberg, allowing Massa and Bottas to slide right up the middle between them and take the first two places. The leapfrogging was so surprising that it looked like the Mercedes drivers were giving the Williams drivers a head start. They diced through the first corners, Hamilton sliding past Bottas into second place halfway through the lap. And then the safety car reported for duty.

These are the top luxury cars bought by people entering the segment for the first time

Let's say you just got a big promotion at work or the kids are moving out of the house, and you finally have some extra money. You decide to blow it all at once and treat yourself by upgrading your ride. Naturally, you look to a luxury automaker. What do you choose?
Models like the Audi A3 and Mercedes-Benz CLA-Class may be tailor-made to introduce buyers to the premium segment, but a new study finds that they don't garner the highest rates of non-luxury customer conquests. It turns out that a Volvo leads among folks moving up to a premium brand, and it isn't even one that's made anymore, at that.
A recent study by Polk and IHS Automotive looked at what models had the highest rates of buyers upgrading from a non-luxury segment. The information comes from its new vehicle registration data through April 2014. All ten top models boasted conquest rates of over 50 percent, but the Volvo C70 led the field with 68.01 percent of its customers coming from non-premium brands.