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

BMW's N20 engine--four cylinders, more power

More power, greater torque, reduced fuel consumption, lower tailpipe emissions and less weight--but better? Before driving the BMW X1 xDrive28i, the first model to feature the German carmaker's new turbocharged 2.0-liter four-cylinder gasoline engine, we weren't so sure. The new engine, known as the N20 and set to lead a return of four-cylinder BMW models to North America for the first time since 1998, has been conceived to (indirectly) replace the company's long-running naturally aspirated 3.0-liter inline six-cylinder.

Catalytic converter thefts double in three years

Associated Press Thefts of catalytic converters from cars have more than doubled in less than three years, according to an investigation by the BBC. Data compiled from 40 police regions across the UK reveal that in 2012 a total of 8,947 catalytic converters thefts were reported, compared to 3,957 similar cases recorded in 2010. On Bing: see pictures of catalytic convertersStreet sweepers to mine UK roads for precious metals A car’s catalytic converter reduces its harmful exhaust gas emissions by initiating a chemical process to neutralise many toxic substances emitted from the engine.

Volkswagen Aims High With Refreshed Polo

VOLKSWAGEN has announced pricing and specification details ahead of the launch of its updated Polo. The first deliveries of the cosmetically and mechanically enhanced supermini are expected in July, with the entry-level model priced from £11,100. The flagship BlueGT model will run to £19,715.