Groove Auto, your Denver car dealer, cares very much about providing you with the most amount of information available before you purchase your new or<used car for sale in Denver.

Realizing that shoppers might want to see data about a used vehicle's fuel efficiency, the Environmental Protection Agency now offers an online tool to generate a do-it-yourself window sticker.

At the agency's Web site, a seller lists the year, make, model and engine-transmission configuration of the vehicle, which generates a printable PDF with the vehicle's city, highway, combined fuel economy rating and a generic photo of the vehicle.

The label also displays a quick-response code that can be read by some smartphones to generate model literature and other data about the vehicle.

"We have fuel economy data on about 30,000 light-duty vehicles - cars, mainly - dating back to 1984 models," Bo Saulsbury, a spokesman for the project, said in a telephone interview. Mr. Saulsbury is a member of the research staff at the Oak Ridge National Laboratory in Oak Ridge, Tenn., which operates under the auspices of the Energy Department. "We've been kicking around this idea for some time. What really got us going was the cash-for-clunkers program in 2009. With that, we started getting demand for labels like these."

For owners who might expect significant drops or increases in mileage figures, the E.P.A. suggests not to worry. According to a note on the Web site, "research shows that on average the fuel economy of a properly maintained vehicle will decline less than 2 percent over the 15 year life of a car."

A fringe benefit of the PDF is that it looks official. "If you're selling a car," said Mr. Saulsbury, "we think prospective owners would rather see this data on a label, rather than being told it."

At Groove Auto, we have four buying locations for new cars in Denver.  Groove Toyota/Scion and Subaru on South Broadway, and Groove Ford and Mazda on Arapahoe.  Our sales teams are very knowledgeable and able to answer any questions you may have.

Aside from having a great selection of new and used vehicles, we have excellent Denver car repair facilities.  Our technicians are all factory certified and capable of tackling minor services to major repairs on all makes and models.  So feel free to schedule auto repair in Colorado online or stop by any of our locations and visit with our friendly service consultants.