What is it?
This is a fuel-saving, carbon dioxide-staunching 108bhp 1.6-litre turbodiesel S40, that achieves an impressive 104g/km when equipped with £250-worth of optional Start-Stop hardware.
That happens to be the same carbon dioxide figure as for the outgoing, second generation Toyota Prius and it’s usefully lower than the 114gkm achieved by the Focus Econetic whose gene pool it shares.
The Volvo’s 72.4mpg combined fuel consumption is, by odd coincidence, the same as for the new Prius – though the Focus manages 78.4mpg - and it also qualifies in band B for road fund duty besides attracting a low 13percent benefit-in-kind tax for company car users.
So purely on a running-cost basis, this is an attractive car. Without stop-start – curiously, Volvo is test-marketing the S40 1.6D DRIVe in both forms – it scores 119g/km and 62.8mpg combined.
The same figures are achieved with identical hardware in the sister V50 estate and C30 coupe, the neat three-door needing aerodynamic modifications that include under-floor panelling, an extended roof spoiler and a rear diffuser to score the same numbers, alterations that make it look quite sporting.