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How Renault, Fiat Chrysler, and yes, Nissan, could save through sharing

If French automaker Renault green-lights a proposed merger with Fiat Chrysler Automobiles, the companies almost immediately could begin saving money by consolidating components and basic structures on many of their most popular vehicles, an industry analyst said on Tuesday. The synergies could multiply if they invite Japanese automaker Nissan, currently Renault's alliance partner, to join the merger, according to a former Renault and Nissan executive. Renault and Italian-American rival Fiat Chrysler Automobiles are in talks to tackle the costs of far-reaching technological and regulatory changes by creating the world's third-biggest automaker. A Renault-Fiat Chrysler combination "would mean a greater sharing of parts (which) could really boost the profitability of Fiat Chrysler's smaller vehicles," said Sam Fiorani, vice president, AutoForecast Solutions. Building similar models on a common vehicle architecture, Fiorani said, "would give both companies a lot more freedom in manufacturing. They could mix brands and vehicle sizes on the same assembly line, switch vehicles between plants to balance production, and even shift production from one country to another, depending on changes in demand, tariffs or other considerations." Fiorani said Fiat Chrysler could benefit from sharing the French automaker's expertise in electric vehicles and powertrains, where Renault and Nissan have jointly invested more than $5 billion. These are areas in which Fiat Chrysler has little in the way of components or intellectual property. Another sector that is ripe for consolidation is light commercial vehicles, where Renault and Fiat Chrysler could build a variety of vans in several sizes on common platforms that could be assembled and sold in global markets. Ford Motor Co and Volkswagen AG began their alliance discussions a year ago by focusing on potential collaboration in light commercial vehicles. Getting Nissan's blessing Fiorani said Renault's CMF architecture, which was jointly developed with Nissan and underpins many of Renault's passenger cars and crossovers, could be used by Fiat Chrysler on a wide variety of vehicles. As an example, he said the CMF could provide a new single foundation for at least five Jeep models, including the Renegade, Compass and Cherokee, which now are based on four different platforms.

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.

These are the cars with the best and worst depreciation after 5 years

The average new vehicle sold in America loses nearly half of its initial value after five years of ownership. No surprise there; we all expect that shiny new car to start depreciating as soon as we drive it off the lot. But some vehicles lose value a lot faster than others. According to data provided by iSeeCars.com, trucks and truck-based sport utility vehicles generally hold their value better than other vehicle types, with the Jeep Wrangler — in both four-door Unlimited and standard two-door styles — and Toyota Tacoma sitting at the head of the pack. The Jeep Wrangler Unlimited's average five-year depreciation of 30.9% equals a loss in value of $12,168. That makes Jeep's four-door off-roader the best overall pick for buyers looking to minimize depreciation. The Toyota Tacoma's 32.4% loss in initial value means it loses just $10,496. The smaller dollar amount — the least amount of money lost after five years — indicates that Tacoma buyers pay less than Wrangler Unlimited buyers, on average, when they initially buy the vehicle. The standard two-door Jeep Wrangler is third on the list, depreciating 32.8% after five years and losing $10,824. Click here for a full list of the top 10 vehicles with the least depreciation over five years. On the other side of the depreciation coin, luxury sedans tend to plummet in value at a much faster rate than other vehicle types. The BMW 7 Series leads the losers with a 72.6% drop in value after five years, which equals an alarming $73,686. BMW's slightly smaller 5 Series is next, depreciating 70.1%, or $47,038, over the same period. Number three on the biggest losers list is the Nissan Leaf, the only electric vehicle to appear in the bottom 10. The electric hatchback matches the 5 Series with a 70.1% drop in value, but since it's a much cheaper vehicle, that percentage equals a much smaller $23,470 loss. Click here for a full list of the top 10 vehicles with the most depreciation over five years.