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

New Mazda3 Hatchback & Fastback priced from £16,695

The New Mazda3 (pictured at Frankfurt) costs from £16,695 Mazda revealed the new Mazda3 back in June, but didn’t manage to come up with prices for the UK. But now, with the Mazda 3 going on sale and due to arrive in the UK in January, Mazda has decided what it’s going to charge. The starting point for the new Mazda3 will be £16,695 for the 1.5 litre SKYACTIV-G petrol 100ps SE hatchback rising to £23,345 for the diesel 2.2-litre 150ps Sport Nav Auto hatchback.

Concept Car of the Week: Opel CD (1969)

Despite its sophisticated suspension and spacious interior, Opel struggled to sell its big Diplomat luxury sedan. It was 1968 and Opel simply couldn't compete with Mercedes-Benz, the leader in that segment by far. Bob Lutz, then a young executive at GM Europe, thought of using the sedan's chassis to create a large GT Coupe in an attempt to boost both its sales and profile.

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.