Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

Boris planning war on diesel car drivers – London Mayor wants drivers of diesel cars to pay more

Boris wants to charge diesel cars an extra £10 to enter London We’ve long banged on about the nonsense of basing the cost of motoring on the Co2 emissions of cars, and it seems the London Mayor, Boris Johnson, also realises that Co2-based taxation has led to a real pollution problem. As we reported as far back as 2010, petrol cars – certainly before the introduction of Euro 6 emissions recently – are far cleaner than diesel cars when it comes to the sort of stuff that really matters – NoX and particulates. And the problem has been exacerbated by basing car taxation on Co2 emissions as lower Co2 levels have been much easier for car makers to achieve on diesel engines, which is why diesel-engined cars now account for around 50 per cent of all cars sold in the UK.

Driven: BMW X6

Why do people like some cars and dislike others? There are all sorts of reasons for sure, but there aren't so many cars that one both likes and also dislikes. The BMW X6 takes this a stage further in being a design that is likable and unlikable for the same reason.

Mercedes SLK (2012) Undisguised

The Mercedes SLK 2011/2012 - almost undisguised Considering we’re not actually expecting the next generation Mercedes SLK to hit the roads until 2012 – although it will surface in 2011 – we’ve been picking up spy shots of the latest SLK for quite some time. More than a year ago we brought you spy shots of the 2012 Mercedes SLK, but that was on track and quite camouflaged. But the latest shots are practically undisguised.