The following cars represent the most technically advanced available.
With solid cabin tech, the 2014 Chevrolet Cruze Diesel competes well with compact sedans and gets stellar fuel economy, but high initial cost and the price of diesel eat into the savings.
The 2014 Audi A7 TDI includes some of the best connected tech available today in an automobile, and those inclined to put up with a few diesel drivetrain quirks will be rewarded with significantly higher fuel economy than from the gasoline equivalent.
Featuring excellent fuel economy and a generally comfortable and easy-driving character, the 2013 Mercedes-Benz GLK250 makes for a useful all-around vehicle, good for the daily commute and family road trips.
CNET News reporter Daniel Terdiman drove Audi's fuel-efficient clean diesel SUV 5,765 miles across Colorado, Utah, Idaho, Montana, and Wyoming--and enjoyed every mile.
BMW considers which models to offer as four cylinder diesels in the U.S.
With diesel fuel economy and its wagon format, the 2013 Volkswagen Jetta Sportwagen TDI offers great utility, and adds a premium-car feel, but cabin electronics only cover the basics.
A swell in diesel cars offered in the U.S. means more high-mileage options for buyers. Here are four diesel-engined cars recently reviewed by CNET.
Volkswagen's new hybrid system in the 2013 Jetta is a winner, delivering good driving characteristics and excellent fuel economy, but the cabin tech lacks features for a car in this price range.
Automotive News reports on new four-cylinder engines for U.S. cars from Mercedes-Benz.
Our mechanic takes us through the cylinder head and valve train and continues his explanation of how engines really work.