2014 Nissan Versa Note S Plus on 2040-cars

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2014 Nissan 370Z Nismo

Michigan is one of those places where we can sub-divide the seasons into good and bad portions, with each producing a noticeable shift. The week prior to my time in the 2014 Nissan 370Z Nismo, it was 65 to 70 degrees and sunny, all week long. Anyone care to guess what the following week was like?
Windy, cold and damp weather typified my week in the Z, with temps hovering around 55 degrees and several days of showers. Yes, I got the first week of the bad part of fall. The Z was hardly happy during its time with me, but we both persevered, and I made a point of sprinting out to the garage anytime the ground seemed remotely dry enough to test this striking two-seater. That enthusiasm waned quickly, though, as the week wore on.
By all accounts, the Z is a car that I should like. It's an uncompromising sports car, but as I discovered during my travels, sometimes a little compromise is welcome, and living with a car like the Z - particularly the angrier, Nismo-tuned model - quickly becomes a case of too much of a good thing.

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.

Nissan and Infiniti recall 1.2 million vehicles because backup camera might go blank

Nissan North America has issued a recall for more than 1.2 million vehicles due to the ability to change backup camera settings to the point where there is no image in the display. The recall, which was filed with NHTSA on Sept. 12, 2019, includes cars, trucks, crossovers, SUVs, vans, and coupes across both the Nissan and Infiniti lineups.  Reported by Automotive News, NHTSA recall No. 19V654000 affects a total of 1,228,830 vehicles across two brand lineups and more than two dozen models. It includes the 2018-2019 Nissan Altima, Frontier, Kicks, Leaf, Maxima, Murano, NV, NV200, Pathfinder, Rogue, Rogue Sport, Sentra, Titan, Versa Note, Versa sedan; and 2018-2019 Infiniti Q50, Q60, QX30 and QX80. It also lists the 2019 Nissan GT-R and Taxis, as well as the 2019 Infiniti QX50, QX60, Q70, and Q70L. According to the recall, it is possible to adjust the backup camera and display settings "such that the rearview image is no longer visible and the system will retain that setting the next time the vehicle is placed in reverse." Although this type of occurrence would be extremely rare and most likely a mistake made by the driver, its real possibility means all of these cars are technically breaking the law. Federal Motor Vehicle Safety Standard (FMVSS) No. 111, "Rear Visibility," says so. According to Automotive News, this recall is not limited to the United States and also affects vehicles in Canada, South Korea, and Israel. The recall begins Oct. 19, 2019, and Nissan will provide affected customers with a free software update to fix the issue.