Volvo’s “Polestar Optimisation” program has gained two new units. The T5 and D4 have been added to the list which now basically encompasses the entire engine range. The automaker says the optimization ...

Volvo’s five-cylinder D3 and D4 diesel engines were never the most efficient two-liter units on the market, but they did punch well above their capacity in terms of torque and, of course, they made a ...