2003 Infiniti G35 Base Sedan 4-door 3.5l on 2040-cars

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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:

Hyundai, Genesis, Subaru warn their dealers about markups

Six weeks ago, word got out that Ford's VP of sales for the U.S. and Canada wrote one of those "It has come to our attention..." e-mails to the automaker's dealer body. The VP's problem was dealers trying to get reservation deposits for the Ford F-150 Lightning well above the official $100 fee. The tomfoolery resulted in interactions "with customers in a manner that is negatively impacting customer satisfaction and damaging to the Ford Motor Company brand and Dealer Body reputation." Two weeks later, GM told its dealers to cut out the reservation gaming and the markups on the 2023 Chevrolet Corvette Z06, banditry that's been going on for two years. Two weeks ago, Ford was back at it, this time about markups on the Bronco. Last week, Asian automakers swept into the melee, with Hyundai and Genesis, Subaru, and Infiniti writing letters to their dealers to deliver some variant of, "Stop pissing off the customers." Automotive News reported an SVP at Hyundai Motor America and the COO at Genesis Motor North America sent letters to their dealers expressing disappointment at "certain pricing practices which, if left unchecked, will have a negative impact on the health of our brand." One of the practices mentioned was dealer markups, another was the bait-and-switch, with dealers advertising one price then charging a higher price once the customer showed up at the lot. The letters acknowledged that dealers are separate companies to the automakers and have the right to set their own prices. The automakers cannot interfere with that; their leverage is distributing allocations and perks such as advertising support and financial incentives. So, like a movie boss letting the protagonist go on a technicality, the brands wrote, "we cannot stand idly by watching the actions of the aforementioned dealers undo all the efforts we collectively have put into making these brands what they are today." Jalopnik got tipped to a letter Subaru of America CEO Thomas Doll sent to that brand's dealers. Doll's polite yet insistent tone was the result of a letter a loyal Subaru owner sent to the automaker's VP of Customer Advocacy. In the market for a third brand-new Forester, the owner said they encountered a "tax" labeled a "Low Inventory Surcharge" of as much as $6,000, putting the Forester out of reach.

2015 Mexican Grand Prix is a lot like old times

The last time Formula One visited Mexico, in 1992, 26 cars powered by eight engine manufacturers (counting Honda and Mugen-Honda separately) lined up on the grid; it would have been nine engine makers but the Brabham-Judd cars failed to qualify. In 1992 Lewis Hamilton was seven years old, Sebastian Vettel was five, Max Verstappen was still five years away from being born. Two of the current Sky Sports F1 commentary team, Martin Brundle and Johnny Herbert, were drivers. The starting three were Nigel Mansell on pole – 39 years old, this the year he'd win his only World Championship – and Riccardo Patrese both driving Williams-Renault cars, followed by Michael Schumacher in a Benetton-Ford. Only 13 of the 26 starters would finish. The circuit is has been reworked to today's safer standards, the track surface is brand new and slippery, but the atmosphere and packed grandstands haven't changed. Nico Rosberg was another point of consistency, scoring pole position for the fourth race in a row to beat his now-World-Champion teammate Hamilton by almost two-tenths of a second. The last time Rosberg turned pole position into a victory? The Spanish Grand Prix back in May. Vettel locked up third for Ferrari, followed by the Infiniti Red Bull Racing duo of Daniil Kvyat and Daniel Ricciardo. Williams went two-up as well, Valtteri Bottas in sixth ahead of Felipe Massa in seventh. Max Verstappen turned in a great late lap to reserve eighth place, Sergio Perez did all he could in front of his home crowd to get ninth, teammate Nico Hulkenberg the caboose in the top ten. In that 1992 race the first three on the grid finished the race in the same order after Mansell dominated, and it was almost the same in 2015. If Rosberg had driven the whole season like he drove today the Driver's World Championship would still be up for grabs. He got a great start and held his line through the first corner, coming out ahead of Hamilton through the initial kinks, pulling away as soon as he got to the straight. Hamilton was never more than a few seconds behind, but every time the Brit inched closer the German found a few more tenths to keep his distance. The field got bunched up when the Safety Car came out on Lap 53 after Vettel spun and got stuck in the barriers, but Rosberg handled the restart perfectly. Both drivers made small mistakes in the last few laps while driving on the edge, but Rosberg earned a strong victory, crossing the line two seconds ahead of his teammate.