The bestselling new cars in Britain

September is the biggest month of the year for new car sales in Britain: car manufacturers say it’s the most important month to get right and a good September performance is thus something of a bellwether test. The UK trade body the SMMT has just released new car registration data for September 2013, which enables us to get a picture of the state of the nation’s new car sales. And the news remains glowing.

Nissan mobility concept (2010): it's Nissan's Twizy

You'd be forgiven for thinking we'd mistitled a story about the Renault Twizy. It's not - take another look and you'll spot important differences. Like a Nissan badge.

Koenigsegg One:1 preparing for Geneva & hosted by Christian von Koenigsegg (video)

Christian von Koenigsegg walks us round the new Koenigsegg One:1 The first sniff of the Koenigsegg One:1 came at the end of 2012 when Cars UK exclusively revealed the first details of Koenigsegg’s Megacar. It took more than a year for Christian von Koenigsegg and his intrepid team to complete the first car, but it was worth the wait. Probably the supercar star of the Geneva Motor Show earlier this month, the One:1 gets 1360 HP and weighs just 1360KG – the the world’s first 1:1 power to curb weight ratio supercar – and has 2G cornering ability and 610kg of downforce at 160mph thanks to active aerodynamics.