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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.

Leno drives Volvo P1800 from Roger Moore's The Saint

Outside of a few notable exceptions, Volvo usually isn't associated with making beautifully curvaceous vehicles. But in the 1960s and early '70s the company proved with the P1800 that its cars didn't only have to be safe but staid family transportation. Underneath that shapely styling were a lot of components from the brand's parts bin, but that didn't bother Roger Moore when he drove one of these in the TV series The Saint. Actually, the future James Bond actor didn't just get behind of one of these; he owned this exact 1967 P1800 S. It's this week's highlight on Jay Leno's Garage.
Moore was the car's original owner, but it also appeared in studio scenes of The Saint. Despite its famous provenance, when owner Bill Krzastek bought the P1800 in England, it was in pretty rough shape. The Volvo underwent a nine-month restoration to get it back into shape, which included some new body panels and wheels. Krzastek claims that much of the interior is original, though.
Krzastek comes off has a little bit nerdy, but you have to give him credit. He absolutely loves his Volvo and knows something about practically every detail of his car's history. Krzastek even refinanced his house to fund the purchase and restoration of the P1800. Although, with the right maintenance these old Swedes have been known to go millions of miles. Enjoy this look at one that was a star of the screen in the '60s.

Volvo S60 Polestar Concept looking Smurfy in Jay Leno's Garage

Is it just us, or has Jay Leno's Garage evolved from an intimate, off-the-cuff video series designed to show off the late-night comedian's automobile collection into something a lot more ambitious and... mainstream? This isn't a complaint, exactly, as Leno has been putting out engaging videos at an increasingly furious pace. However, we can't help but note that the subjects have largely graduated from the funnyman's steam-powered eccentricities and forgotten classics to lots of new production and concept cars, often with automaker execs in tow. It's almost as if the series is turning into an internet version of his NBC talk show, one where bigwigs swing by to show off their latest projects as part of their publicity tours, only instead of new movies and albums, it's cars or the occasional motorcycle.
Such is the exactly case with Volvo's stonking S60 Polestar Concept, which makes its appearance in Jay's warehouse of wonders this week. Tuned by in-house skunkworks Polestar, the "Swedish Racing Blue" S60 has certainly been making the rounds as of late, with recent appearances near Leno's garage at the LA Auto Show and an Auto Motor und Sport track faceoff against the BMW M3 and Audi RS4 Avant.
Perhaps we shouldn't be surprised that Volvo is so keen to get its showcar in front of the cameras - last we heard, executives were seriously considering a small production run for their unlikely 508-horsepower, all-wheel drive sport sedan, though we continue to hear that realistic pricing is likely to be a roadblock.