Volkswagen will unveil the 2013 Beetle TDI Clean Diesel next week at the Chicago Auto Show. The diesel model will join the base gasoline-powered 2.5-liter five-cylinder and 2.0-liter turbocharged four-cylinder engines that are available under the hood of the redesigned 2012 Volkswagen Beetle.

“The Beetle TDI utilizes VW’s corporate 2.0-liter turbo-diesel four, which makes the same 140 hp and 236 lb-ft of torque as it does in the Golf, Jetta, and Passat,” writes Car and Driver. “A choice of either a six-speed manual or DSG dual-clutch automatic transmission sends power to the Beetle’s front wheels.”

As we reported last week, diesel engines are growing in popularity in the United States, as both manufacturers and consumers are looking for vehicles with greater fuel efficiency. The upcoming Beetle TDI should be the most fuel-efficient model in the lineup. Volkswagen predicts that the diesel model will achieve 29/39 mpg city/highway. The most efficient model among the gasoline-powered Beetles is the base 2.5-liter model with a manual transmission, which gets an EPA-estimated 22/31 mpg.

Aside from achieving far better fuel economy, “the Beetle TDI remains aesthetically similar to its gasoline counterparts,” writes Autoblog. According to Volkswagen, the only visual differences the TDI model will have are unique 17-inch alloy wheels, TDI badges and some chrome trim.

Pricing for the 2013 Volkswagen Beetle TDI has not yet been announced. It will go on sale this summer.

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