Have you ever wondered why you need to add oil to your chainsaw’s fuel supply? Or why some dirt bikes have a higher pitched exhaust note than others? We’ve all been burdened with yard work or been ...

It’s no secret that Volkswagen and Audi struggled with reliability in the early 2000s, but now it appears that the issues have stuck around for a while. The 2.0-liter, turbocharged four-cylinder ...

When I went to school for engine repair in the 1980s, we studied the differences between two- and four-stroke engine cycles extensively. If you're not familiar with engine strokes, understanding the ...

Volkswagen has developed a more efficient version of its acclaimed AE888 engine, one with an advanced new combustion process. This economical powerplant is set to roll out with the brand-new Tiguan.

The new Audi A4 2.0-liter turbo-four is rated for 190 hp and 236 lb-ft of torque, and Audi claims it will return the equivalent of 47 mpg in the U.S. The torque peak is said to be available from 1,450 ...