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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.

Junkyard Gem: 1969 Volvo 145 Wagon

Volvo managed to sell the 1940s-design PV544 and its 1950s-design Amazon descendant all the way into the mid-to-late 1960s in the United States, but those iconic machines were replaced here by one that began a line of even more iconic Volvos: the 140 Series. Starting with the 1968 model year, the 140 became available in the United States as a two-door sedan (the 142), a four-door sedan (the 144 and 164), and a station wagon (the 145). These rear-wheel-drive, brick-shaped cars later evolved into the 200 Series and its heirs, with the very last of the breed appearing here in the form of the 1998 S90/V90. That's a lot of history all wrapped up in one vehicle, and so I was pleased to find this 145 in a Denver-area car graveyard earlier this month. This car rolled out of Goteborg with a gleaming coat of Morkgron (dark green) paint and, according to this build tag, was built to California specifications. At some point, it made its way to Colorado. Very few US-market cars had six-digit odometers prior to the middle 1980s, but Volvo felt optimistic about their cars' longevity (at a time when reaching the magical 100,000-mile mark was something that rarely happened with non-Mercedes-Benz vehicles) and so now we can see that this car made it well past 200k miles. The 2.0-liter pushrod four-cylinder engine in this car can trace its ancestry back to the Amazons, P1800s, and PV544s of the early 1960s, and it was rated at 115 horsepower. A six-cylinder version of the 140 sedan, known as the 164, could be purchased here as well (though it had few American takers). But wait— what's that Detroit-looking two-barrel carburetor doing on an engine that's supposed to have a Stromberg 175? Yes, it's a GM-spec Rochester clone built at the ancient Bay City Plant (now known as GM Powertrain) in Michigan. Earlier Volvos came with a pair of British-made Skinner Union sidedrafts, which could be pretty painful to keep working right, but perhaps even the less-oddball Stromberg proved too much hassle for whoever installed this carb (which was meant to go on engines with much more displacement than a Volvo B20). Transmission choices in the 1969 140: a four-on-the-floor manual or a three-speed automatic. This car has the manual. The interior is pretty thrashed, as is usually the case with the 140s I find during my junkyard explorations.

The first trailer for Top Gear's 24th season shows a hands-free drag race

In the excitement over Amazon's new motoring show, it's important to remember that there's a certain series from the BBC that's attempting to get its mojo back for a 24th season. Yes, we're talking about Top Gear. Since Chris Evans' departure earlier this year, Top Gear news has been relatively sparse, particularly as The Grand Tour and its hosts Jeremy Clarkson, James May, and Richard Hammond seized headlines. But on Christmas, watchers of the series' YouTube channel caught a glimpse of the first scene from the next season. Featuring hosts Matt LeBlanc, Chris Harris, and Rory Reid in what looks like a trio of old, dilapidated cars. We're thinking TG is running a taxi comparison. There's a London black cab and a Mercedes-Benz W210 – a favorite of European cabbies – but we aren't sure where Harris' boxy wagon fits in. Did the Volvo 850 Estate ever serve as a livery vehicle? But it's the basis for this comparison that's weird, because the hosts appear to be having a no-hands drag race. The cars veer off in different directions, traveling across what looks like a snow-covered dirt lot. We're assuming hilarity ensues. And while we don't quite know what they're hoping to accomplish, we are looking forward to watching it go down. Top Gear's 24th season doesn't have an official air date, and the video ends only with a cryptic "Coming Soon." Expect to hear more in the next few months.