Mii – pronounced ‘me’ rather than ‘my-ee’ or ‘me-eye’, is Seat’s brand new city car that they’re touting as a perfect runabout for young, sporty types who spend a lot of their driving time in town.

Promising ‘compelling practicality’, ‘exceptional driving fun’ and ‘high efficiency’, the Mii is Seat’s answer to the Volkswagen Up, and shares its basic platform.

At just over 3.5 metres long it will be sold as a three-door to begin with, followed by a five-door version next year. At only 854kg, the Mii is one of the lightest ‘normal’ cars on the road, so ignoring special high-performance models like the Ariel Atom. Light weight helps efficiency, so the UK version of the Mii Ecomotive will have CO2 emissions of only 97g/km along with fuel economy of 67.3mpg.

Continental Europe, however, will get a special variant with just 86g/km of CO2 shooting out of its exhaust every kilometre, which is only one gram worse than the current best for an internal combustion-engined car, set by the Kia Rio 1.1-litre diesel.

It’s a shame Seat have no plans to make a right-hand-drive version, but there are currently no tax benefit barriers below 100g/km in the UK, so Seat has fair reason to hold off when it will already have a Mii in the UK that benefits from free road tax. There will be two petrol engines – 59bhp and 74bhp. Technological highlights aimed at the young audience Seat wants to capture include the Seat Portable System. The removable five-inch screen can be used as a sat nav when on foot as well as in the car, and it has full integration into the car’s phone and audio systems.

Many of the car’s details currently only apply to Spain, Seat’s home market, or to continental Europe. More information on the finished product that will hit UK shores will come soon.