Tax-free Volkswagen Polo Bluemotion

Owners of the super-frugal Volkswagen Polo Bluemotion won’t need to pay road tax, because the diesel hatch emits just 99g/km of CO2.That makes it cleaner than any current hybrid – Toyota Prius included – and one of the cleanest combustion-engined cars on sale.The Bluemotion uses a specially tuned 1.4-litre three-cylinder turbodiesel engine with intercooler and exhaust gas recirculation for