Bluemotion sounds remarkably like some kind of toilet-cleaning product to us, but it's actually the name VW reserves for its most fuel-efficient cars.
Last week VW announced that it's going to reveal a highly efficient Passat Bluemotion at the Geneva motor show in March, and now it has decided to bring the Polo Bluemotion to the UK.
Already on sale on the continent, the Bluemotion combines an efficient diesel engine with a low kerbweight (1084kg), improved aerodynamics and longer gearing. On the Polo, that results in an official fuel consumption figure of over 72mpg and a CO2 output of just 102g/km. That's 2g/km better than the petrol-electric Toyota Prius hybrid.
Under the bonnet is VW's 79bhp 1.4-litre, three-cylinder TDI, with a variable geometry turbocharger. This helps provide more power from lower down the rev range, thus conserving fuel. Outside, the Bluemotion gets a special front bumper, re-designed grille and rear spoiler to smooth airflow, along with a set of lightweight 14-inch alloys.
The Polo Bluemotion is no rocket, taking 12.8sec to accelerate from 0 to 62 mph, but it will hit 109mph. More importantly, its 45-litre fuel tank gives it a theoretical range of over 700 miles, and it kills all known germs in the bowl. Actually, we made that last bit up. Prices will be announced closer to the car's launch in the summer.