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

Fiat aims to keep green lead with fuel-sipping two-cylinder engine

Fiat S.p.A. aims to keep its environmental lead in Europe by selling what it claims to be the world's most fuel-efficient gasoline engine. When the engine goes on sale in the Fiat 500 minicar in September, the 875cc unit will be the only two-cylinder engine fitted in a car in Europe.

Year-end discounts on 2012 models

Dealerships are working to get rid of the remaining 2012 models as the year comes to an end, so there are plenty of incentives on 2012 cars, pickups and SUVs. Here are our picks for the best deals: Chrysler 300 Chrysler is offering up to $5,500 cash back to buyers of select 2012 Chrysler 300 models. The most steeply discounted models include both the rear-wheel and all-wheel-drive versions of the 300C, 300C Luxury Series and 300S V8, as well as the 300S Mopar 12 rear-wheel-drive model.

60mph M1 motorway speed limit proposed

The government has announced a proposal to lower the motorway speed limit from 70mph to 60mph over a 32-mile stretch of the M1. The plan, which has just been put out to consultation, would lower the speed limit to 60mph between junction 28, near Matlock in Derbyshire, to junction 35a, north of Rotherham – in a bid to improve air quality by reducing vehicle emissions. On Bing: see pictures of motorway air quality Find out how much a used low CO2 car costs on Auto Trader The current proposal would see the Highways Agency put the 60mph restriction in place between 7am and 7pm, seven days a week.