Volvo's in-house tuning arm Polestar has boosted the power outputs of the XC60 range, with the flagship T8 hybrid producing 421PS. 

The company will soon be re-launched as a separate brand producing high-performance electric cars, but currently develops factory approved add-on enhancements.

Polestar says its optimisation improves five key areas of the powertrain while retaining the Volvo warranty, class-leading emission levels, consumption of 134mpg and a pure electric range of 28 miles.

”Our goal is to create usable performance in everyday driving situations for Volvo owners who want an enhanced driving experience,” said Henrik Fries, vice president, Research and Development at Polestar.

Polestar optimisation is available for all UK models of the XC60 at the point of sale or as post-sale add-on.