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NHTSA Probes Nearly 400,000 Infiniti, Honda Vehicles Over Steering Faults

As many as 391,000 vehicles from Honda and Infiniti may eventually need to be recalled as a result of two, separately announced Preliminary Evaluations from the National Highway Traffic Safety Administration to ascertain the scope of the potential safety hazards. In one of the queries, NHTSA is looking into 24 reports from drivers of the 2013 Honda Accord who say they had total loss of their power steering or experienced a sudden increase in the necessary effort to turn the wheel. In four cases, the problem may be linked to crashes. According to the claims, 13 people reported seeing a warning message during the failure. Turning off the car and restarting it would fix the issue in some cases. If a recall is necessary, it could affect an estimated 374,000 Accords. The second investigation is much smaller in scope. The safety agency is investigating the 2008 Infiniti EX35 after two complaints of the steering wheel shaft separating and the vehicle losing the ability to steer. Both reports say the steering became loose when driving and then completely failed once the vehicle was stopped. A recall for the problem would affect an estimated 17,000 vehicles. Recalls Honda Infiniti Safety NHTSA steering

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.

2016 Infiniti QX50 First Drive [w/video]

One crucial change to the 2016 Infiniti QX50 (formerly known as the EX35) may have just made the company's smallest crossover suddenly relevant. So how does one add appeal to an eight-year-old model, without any significant cosmetic or powertrain updates? By addressing its biggest flaw head-on: size. For the 2016 model year, Infiniti has stretched the QX50's wheelbase by 3.2 inches, and the crossover is now 4.5 inches longer overall. In addition to a roomier cabin – 8.3 cubic feet more to be exact – there's one number that sticks out above all else: four more inches of knee- and leg-room in the back seats. Like scoring an exit-row seat on your flight, the extra space may be just enough to change the experience. So how can the upmarket Japanese automaker justify costly changes to the platform when it's only moving 250 of these vehicles in the US per month? Americans can thank the Chinese for that. As in the US, sales of small crossovers are quickly rising in China – a country where being chauffeured is more common for those of means – and rear-seat passengers who can pay for a driver don't want to feel like they're sitting in the penalty box. The platform-sharing economics work, and in this case, everyone stands to benefit. Pricing is reduced by $500 from last year, with the rear-wheel-drive 2016 QX50 now starting at $35,445 after delivery. Infiniti says it considers the Acura RDX and Lexus NX as the QX50's direct competition, but it's worth noting that both of those competing models sell more in just one month than Infiniti's smallest crossover sold all of last year. The QX50 isn't likely to reach its competitor's levels anytime soon, but Infiniti hopes the roomier iteration will pique shopper interest. To help that cause, the 2016 model gets a few light cosmetic touches too. Up front it receives a new grille that's more in line with the brand's current design language, new LED fog and daytime running lights, new door mirrors with LED turn signals, revised side sills, and a new rear bumper. Beyond aesthetics, pricing is reduced by $500 from last year, with the rear-wheel-drive 2016 QX50 now starting at $35,445 after delivery. The all-wheel-drive version adds another $1,400 to that price. All models get more standard equipment, including a power moonroof, heated front seats, and the new LED accents. Inside the cabin, things look much as they did when the crossover first debuted as the EX35, back in 2007.