The Volvo S60 Polestar concept has made its debut at the Los Angeles motor show.

Polestar – Volvo’s official performance partner – has comprehensively reworked the standard S60’s T6 engine, adding a new cylinder head and inlet manifold. The 3.0-litre straight-six unit now develops 508bhp and 424lb ft; significant improvements over the standard car's 300bhp and 325lb ft

The power gains are enough to get the large S60 saloon from 0-62mph in 3.9 seconds and on to a top speed of over 186mph.

The Polestar concept also benefits from a widened chassis, uprated brakes, Haldex four-wheel drive system and trick Ohlins dampers. A Ferrita 3.5-inch stainless steel exhaust completes the mechanical upgrades.

Aesthetically, the S60 receives a commendably discrete bodykit, 19-inch alloy wheels and is finished in Polestar’s trademark colour, Rebel Blue.

It remains to be seen whether the S60 Polestar will form an unlikely rival to the class-dominating BMW M5, as Volvo is yet to confirm whether it's to ever put it into production.

Daljinder Nagra