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Volvo XC90 Coasting Transmission Deep Dive | How, when and why of coasting

In our recent 2021 Volvo XC90 Recharge review, its turbocharged-supercharged-hybridized powertrain delivered impressive horsepower and fuel economy. But Volvo has one additional trick up its sleeve, propelling a car with power that's simpler, cheaper and all-natural: It's the power of momentum and gravity. I've always been halfway to a hypermiler. I'm not obsessive about it, but in city driving, I enjoy timing stoplight approaches to keep the wheels rolling and avoid the inertia of restarting from a stop. There's little point to needlessly racing and braking between red lights, wasting kinetic energy (and therefore fuel). So I tend to drive strategically instead, often catching up with the drivers who jackrabbit but get hung up at the lights. And, back when I owned a long line of vehicles with manual transmissions, I coasted. Coasting used to be slightly controversial. Some claimed it doesn't actually save gas, though my mileage calculations showed otherwise. Another school of thought insisted that removing engine braking from the equation, even momentarily, constitutes a dangerous loss of control. Of course, an experienced driver can slip a manual transmission back into gear in a flash when engine braking's actually needed. And one should always use some common sense and judgment about when and where to coast. I'm not talking about careening down a 15% grade into a school zone.  Anyway, those arguments became moot when automatic transmissions pretty much took over. (And no, never coast with a typical automatic transmission. Even if it weren't damaging to your type of automatic — but assume that it is — the risk of screwing up a nudge of the shifter from drive into neutral is too great.) XC90 Recharge 8 View 18 Photos But happily, some automakers in recent years have added a coasting feature to their automatics, with the aim of eking out more fuel efficiency. Volvo calls the feature on its Aisin eight-speed "Eco Coast." Some Mercedes, BMWs and others call it "sailing" or "gliding." The Hyundai Ioniq, Ford Mustang Mach-E and Polestar 2 are among EVs that allow you to cancel out all regeneration and freewheel downhill. And future cars such as the BMW iX are also being designed to do it. By building coasting into the clockworks, automakers have taken any traffic safety concerns out of the question, because the car will instantly switch you back into gear when needed.

All-new Volvo VNL Class 8 tractor loads up on car-like features

A few months ago, we wrote about the public-private partnership between the U.S. Department of Energy and Class 8 truck makers to create concepts called SuperTrucks. The four manufacturers involved designed lighter, more aerodynamic, and more fuel-frugal trucks to hit escalating freight efficiency targets in each phase of the program. Daimler, Navistar, Peterbilt, and Volvo spent the past 18 months showing the results of the SuperTruck 2 phase while work gets going on SuperTruck 3. This month, Volvo becomes the first of that group to debut an all-new truck incorporating lessons learned in the SuperTruck program. Starting with a clean sheet of paper, the new Volvo VNL is said to be as much as 10% more fuel efficient than before, a stat to get fleet managers and owner-operators to pay attention. Even carmakers tout a 10% increase in fuel economy, and the benefit — like the size — is so much larger in trucks. Let's keep it easy and say a solo driver does 100,000 miles in a year in a truck that averages 7 miles per gallon. That driver needs 14,286 gallons of diesel to do those miles; at $4 per gallon, that's $57,144. If the VNL driver gets 10% better fuel economy and his truck returns 7.7 miles per gallon, this driver only needs 12,987 gallons of diesel, and pays only $51,948. Tell a fleet manager they can save $5,000 per truck, and assuming a sensible purchase price and consistent reliability costs, that fleet manager is going to want to set up a meeting. Just as with car redesigns, a lot of little changes went into this, some we'll recognize from the car world. The VNL's cab adopts a stronger wedge shape and sharper corners. Instead of the usual large, flat windshield sealed with a gasket, the new VNL gets a curved windshield bonded to the body. Tighter gaps between exterior components like the bumper and hood leave fewer spaces for turbulent, draggy air to develop. Volvo also reworked the area behind the cab to reduce one of the greatest aerodynamic maelstroms, the gap between cab and trailer. The D13 engine up front is said to be more fuel efficient and more durable, offering a range of outputs from 405 to 500 horsepower and from 1,748 to 1,947 pound-feet of torque. Considering that the first VNL generation lasted 22 years before a major redesign, from 1996 to 2018, Volvo incorporated powertrain flexibility into this one.

Big rig gets blown over on Wyoming freeway, flattens police cruiser

A big rig navigating a stretch of windy Wyoming highway last week was blown over by high winds and landed on a Wyoming Highway Patrol cruiser. According to CBS News, three Wyoming Highway Patrol troopers responded to an accident along Interstate 80 near Elk Mountain on February 7. While the troopers were out of their cars assisting the crash victims, a white Volvo semi-truck lumbered up I-80 toward them. Wind gusts in that part of Wyoming were clocked in at up to 90 miles per hour on Tuesday, and one of them caught the semi as it neared the parked cruisers. Video from one of the cruiser's onboard cameras showed the big rig drift to the right as a big gust hit the trailer. Slowly, the whole rig tipped over and flattened one of the parked cruisers. The truck then slid a few feet on its side and came to a stop just aft of the cruiser. None of the troopers were injured in the incident, and two people in the truck came out of it unhurt as well. Patrol Lieutenant David Wagener told KGWN that that stretch of I-80 was closed on Tuesday to lightweight, high-profile vehicles. The truck driver was cited for the incident. High winds are no joke, and vehicles getting blown around or even clean off the road is a pretty common phenomenon. Way back in 2011, a truck got blown over in Utah. Then there was a train that got blown off a bridge in Louisiana in 2015. Related Video: News Source: CBS News, KGWN Auto News Dodge Volvo Driving Safety Truck Commercial Vehicles Police/Emergency Sedan semi truck rollover wyoming