2011 Volvo S40 T5 R-design Sedan 4-door 2.5l on 2040-cars

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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.

Thanks for keeping us on our toes, Detroit Auto Show [w/poll]

Here at Autoblog, we love unexpected debuts at auto shows – and judging by our Detroit Auto Show comments and traffic, you do, too. Surprise reveals have been fewer and farther between in recent years with so many ways for vehicles to be teased or leak out, but this week's show has been a revelation. More to the point, it's been a series of revelations, with automakers from around the globe successfully delivering a brace of concept and production surprises. It's made our jobs a lot more exciting and challenging this week, and even though it's actually more work to react and run-and-gun when the sheet is pulled on a surprise reveal than it is to publish an already-written embargoed story, we've had more fun covering this show for you than any domestic show in memory. We hope you've enjoyed the surprises along with us. To that end, borrowing the words of an unnamed automaker PR flack, we'd like to thank the following automakers for enduring "mountain of antacids" and that "creeping sense of paranoia" necessary to keeping ones' wares totally under wraps until the sheets are pulled off the sheetmetal: Buick Avenir concept Chevrolet Bolt concept Ford GT concept Ford Mustang Shelby GT350R Ford F-150 SVT Raptor Hyundai HCD-15 Santa Cruz concept And while we're at it, we'd like to throw in an shout-out to Detroit's substantially revised and revitalized Cobo Center, and in particular, the redone Michelin media center, which is arguably the single best accommodations for writing show stories that we've encountered on the entire international circuit. Well done, everyone. Thank you, and keep the surprises coming. Auto News Detroit Auto Show Buick Chevrolet Ford Hyundai Volvo 2015 Detroit Auto Show

Ford, Volvo, Google, Uber and Lyft form self-driving alliance

Five companies arguably leading the worldwide effort to develop autonomous cars said Tuesday they're forming an organization to lobby the federal government to better prepare America's roads for self-driving technology. The founding members include some of the biggest companies in the automotive, autonomous, and ride-sharing realms – Ford, Google, Lyft, Uber and Volvo. Operating as the "Self-Driving Coalition for Safer Streets," they aim to work with lawmakers and regulators to clarify a disparate set of rules and regulations at both the state and federal levels that could hinder the deployment of autonomous cars. "The U.S. risks losing its leading position due to the lack of federal guidelines for the testing and certification of autonomous vehicles." – Hakan Samuelsson David Strickland, a former administrator of the National Highway Traffic Safety Administration who issued the first set of autonomous-related policies in that role (pictured below), will serve as the group's counsel and spokesperson. "The best path for this innovation is to have one clear set of federal standards, and the Coalition will work with policymakers to find the right solutions that will facilitate the deployment of self-driving vehicles," he said in a written statement. In January, Transportation Secretary Anthony Foxx said his department would accelerate efforts to craft such federal standards. Those efforts include holding two public hearings on standards, the second of which is scheduled to be held Wednesday in Palo Alto, California. Foxx signaled the intent to deliver them by June. Google has been leading the efforts to ensure such standards are national in scope, warning their cars could run afoul of state-specific laws should they cross state borders or if standards varies between the federal efforts and regional ones. The complexity of such efforts was underscored recently, when NHTSA agreed that Google's software could be considered the driver of a vehicle for the purpose of meeting federal motor vehicle standards, an interpretation that would conflict with preliminary California rules that mandate a licensed driver operate a self-driving car that comes equipped with human controls like a steering wheel and brakes. At South By Southwest last month, Jennifer Haroon, Google's self-driving car business leader, said the company couldn't accomplish its goals under those regulations.