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Volvo specs new 450-hp triple-charged four-cylinder engine

When Volvo lifted the veil on the new XC90 a little over a month ago, it announced that all versions would be powered by one engine design: a new 2.0-liter four-cylinder to be offered in various states of tune. That would range, Volvo said, all the way up to a high-output version with "around 400 horsepower," but while it wouldn't specify exact output, now it has.
The new High Performance Drive-E Powertrain incorporates two parallel turbochargers fed by a third electric turbo-compressor. Instead of feeding the cylinders directly, that third unit spools up the twin turbochargers, working together with a dual fuel pump pressurized to 250 bar.
The result is an output of 450 horsepower - far more than the existing 320-hp version and even more than expected. That also works out to 225 hp/liter, far more than the 177 hp/liter boasted by Mercedes-AMG's high-output turbo four and the 139 hp/liter in the Alfa Romeo 4C. Short of a rotary engine (whose actual displacement is the subject of great debate), you'd have to go up to something like the Koenigsegg One:1 (268 hp/liter) to find a higher specific output than what Volvo's boasting here.

Volvo still undecided on offering plug-in hybrid versions of all models

The automotive world is only a few months away from getting its first real glimpse at Volvo's big gamble with the unveiling of the next-generation XC90 (pictured above as the Concept XC Coupe). We're already getting a preview of the revolutionary upgrades with the introduction of the Swede's Volvo Engine Architecture family into some of its 2015 models, like the recently driven S60. These changes are just the start, though. The real magic could be in the powertrains.
Dean Shaw, Volvo Cars North America vice president of corporate communications hinted to Autoblog a few months ago that every model sold in the US could come in a plug-in hybrid variant, starting with the new XC90. Despite confirmation rumors that this has now come to pass, Shaw told AutoblogGreen that the only thing Volvo is confirming right now is that the platform is capable of that. "We haven't confirmed that all US Volvos would be available with PHEV," he said.
Shaw did confirm that that XC90 will come with a gas and plug-in hybrid powertrain that offers "around 400 horsepower." According to Plugin Cars, the new XC90 will be unveiled in August and will make its public debut at an as-yet-unnamed auto show in the fall. Also, sometime during the 2016 model year, a plug-in hybrid variant will be added to its lineup.

Volvo S60 Polestar Concept finally spotted in the flesh

The Volvo S60 Polestar Concept has graced the pages of Autoblog numerous times in recent memory, but we've never actually seen it in person. That is, until now.
We caught up with the blazing blue sedan sitting on the floor of the LA Auto Show, and it looks even better up close. As a refresher, the four-door is fitted with a turbocharged inline six-cylinder engine (3.0-liter) generating an impressive 508 horsepower. Its close-ratio six-speed manual gearbox sends power to all four wheels through a fourth-generation Haldex XWD system. With a decent driver behind the steering wheel, the Polestar can crack the 60 mph benchmark in about 3.7 seconds as it rushes towards a top speed in excess of 186 mph.
Volvo has said that this Polestar-modified S60 was built for a specific client who paid upwards of $300,000 for the pleasure of owning it. But as they say, if there is market demand for more...