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Infiniti replaces Americas chief

The Nissan-Renault alliance has been something of a revolving door for high-level executives of late, and the latest shakeup comes at its luxury unit, Infiniti, where Michael Bartsch (shown above) has been replaced as vice president of its Americas division by Randy Parker. Bartsch had a short tenure – he only took the helm in September 2013. In a press release, Infiniti said he was leaving to "pursue other interests." Bartsch, a veteran of more than 30 years in the auto industry, came to Infiniti from Porsche. Parker comes from within the Nissan empire, formerly heading up the company's sprawling west region, including its marketing, distribution and dealer network. Before that, he served stints at GMAC and General Motors. Bartsch isn't alone in leaving Renault-Nissan recently. Ex-Renault COO Carlos Tavares took the top spot at Peugeot, Infiniti boss Johan de Nysschen left for Cadillac and Nissan executive vice president Andy Palmer took over at Aston Martin. Scroll down for the full press release from Infiniti. Feb. 17, 2015 Infiniti Motor Company announces leadership change at Infiniti Americas NASHVILLE - Infiniti Motor Company, Ltd. today announced a leadership change at Infiniti Americas aimed at growing the brand's presence in the U.S. Randy Parker is appointed Vice President, Infiniti Americas, effective immediately. He succeeds Michael Bartsch who will leave the company to pursue other interests. Most recently, Parker, 48, was Vice President, Nissan West Region, Nissan North America, Inc. "Randy has been a key contributor to the growth of Nissan in the United States," said Jose Munoz, chairman, Management Committee, Nissan North America and executive vice president, Nissan Motor Co., Ltd. "He has overseen strong growth for the Nissan brand in our western region, and we look forward to the skills that he will bring to Infiniti." "It is our pleasure to welcome Randy Parker to Infiniti," said Roland Krueger, president of Infiniti Motor Co., Ltd. "Randy will be responsible for accelerating Infiniti's progress in our largest worldwide market and driving our brand transformation as we execute an expanded product portfolio of premium luxury products." Most recently, Parker was responsible for regional marketing, distribution, dealer network development and financial controls for Nissan's largest U.S. regional operation.

Infiniti's new VC-T changes the rules of small turbocharged engines

The upcoming Infiniti QX50 crossover does not get our pulse racing, no matter how shapely the QX Sport Inspiration concept that previews it may be. No midsize SUV does, to be fair. But it has something special under the hood – the world's first production variable-compression-ratio engine. That means the QX50's 2.0-liter turbo four, which makes 268 horsepower and 288 pound-feet of torque, will have up to 27 percent better fuel economy. Here's how it works. The trend of moving to smaller, turbocharged engines carries with it one big falsehood. Under low load when the turbo isn't needed, these engines are less efficient than an equivalent engine without a turbo because of the low compression ratio the turbo requires. That is, if you never need the extra power, you're wasting fuel. Turbocharged (and supercharged) engines use a lower compression ratio to prevent detonation. When you force extra air in a cylinder and mix it with fuel, it's more likely to prematurely go boom. Lowering the compression ratio prevents this problem, but it's less efficient. Infiniti's VC-T promises the best of both worlds, with a compression ratio that ranges from 8.0:1 for high-power turbo needs to a 14.0:1 ratio for fuel-sipping efficiency. At its heart the VC-T engine is a simple idea, but it's complicated to explain. Consider yourself warned. The photo below from Infiniti serves as a good visual overview. For the truly nerdy, this patent application covers the mechanical concept. Instead of having the pistons connected to the crankshaft, Infiniti's engine has a pivot arm with a connection on each end. One end connects to the piston, the other connects to a second lower shaft, which is controlled by an actuator arm. At any given time the engine's pistons move up and down according to the lobes on the crankshaft. But the actuator arm can change the angle of the pivot arm up and down. That is, the pistons still move in the same motion with the same stroke, but phase the entire stroke up or down. Move the pivot up and there's less room at the top, which means a higher compression ratio. Move the pivot down and the compression ratio goes down, too. As an added bonus, the lower shaft eliminates the need for counter-rotating balance shafts. Infiniti says this system works constantly and can vary the compression ratio to any number between 8:1 and 14:1. It also uses electronic variable valve timing on the intake valves to switch into Atkinson-cycle combustion for greater efficiency.

2019 Infiniti QX50 vs. compact luxury SUV rivals: How they compare

With apologies to the EX35, or whatever it was eventually renamed, Infiniti has been without a proper, competitive entry in the compact luxury SUV segment. You know, the segment that's growing faster in sales and entries than any other? To say the 2019 Infiniti QX50 is long awaited would therefore be an understatement. At first glance and drive, the new QX50 would indeed seem to be wildly more competitive than its predecessor, which come to think of it, was eventually called the QX50 as well. This one is based on an all-new front-wheel-drive platform, and although it lacks the inherent verve of the old, rear-drive- and 370Z-based one, the resulting increase in cabin space should be a welcome tradeoff. In fact, as you'll see below, the QX50 has gone from one of the smallest compact SUVs to the most spacious. How does it stack up in every other way? Say, against the segment's four best-selling entries last year: the 2018 Lexus NX 300, 2018 Acura RDX, 2018 Audi Q5 and 2018 BMW X3. On paper at least, really well as it turns out. Let's go to the spreadsheet! Discover and compare other luxury crossovers with our Car Finder and Compare tools. Comparing engines, drivetrains and transmissions With the exception of the Acura, all of the contenders come with 2.0-liter turbocharged four-cylinder engines. As you can see, the Infiniti is the heavyweight amongst the four-bangers, boasting the most horsepower and torque. The Acura V6 nips it by 11 hp, but the QX50 is still the overall torque champ. Plus, as we documented in the QX50 first drive, the Infiniti's new VC-Turbo engine is also the most technologically advanced. The Lexus is the wimp of the group and is also the second-heaviest, which isn't exactly the ideal scenario. The Infiniti is the only one in the group to feature a continuously variable transmission. That's not going to generate much applause around here. The BMW tops the gear count with eight, while the Audi is the only entry with a dual-clutch automated manual. The Acura and Lexus have only six gears, but they're good transmissions and it's not like their fuel economy is off the pace. The Audi and BMW come standard with all-wheel drive, while the others offer a choice of front- or all-wheel drive. Comparing cargo and interior space The new front-wheel-drive platform is paying dividends inside for the 2019 QX50, as it now boasts the most maximum cargo space at 65.1 cubic feet.