Volkswagen just introduced an all-new version of the Touareg, but that vehicle’s Audi relative, the Q7 SUV, is still a couple of years away from a full redesign. In the meantime, Audi is launching a full revamp of the powertrain lineup at the Leipzig Motor Show. The Q7 probably won’t get a hybrid powertrain until the next-generation model debuts, but all Q7s will get a new eight-speed automatic transmission and a range of boosted and direct-injected engines for 2011.

On the gasoline side there is no longer a V8 version of the Q7. Instead, two versions of the supercharged 3.0-liter V6 that debuted in the S4 will do duty. The S4′s 333-horsepower unit is an optional upgrade to a 272-hp base model. In Europe – and increasingly here in the United States – diesel is the preferred engine for the Q7. Europeans can again choose from two diesels, a 3.0-liter V6 or 4.2-liter V8, although both have had a major going over.

The V6 TDI is still rated at 240 hp but most of the engine has been revamped for a 19 percent reduction in fuel consumption. The base version with only a particulate filter is now rated at 31.8 miles per gallon (U.S.) on the European combined cycle. The so-called clean diesel version with the urea injection system that meets U.S. emissions standards is rated at 28 mpg (U.S.) We’ve seen numbers of up to 30 mpg on the highway and 25 mpg combined with the current V6 TDI Q7, so this number shouldn’t be too out of reach.

For those that crave a seriously fast but still comparatively efficient SUV, the 4.2-liter V8 TDI gets an improved 2,000 BAR injection system. This 590 pound-foot monster accelerates the Q7 to 60 mph in 6.4 seconds and gets a combined EU rating of 25.6 mpg.

An Audi USA spokesman tells ABG that the 2011 Q7 V6 TDI will retain its 225 hp / 406 lb-ft rating and will launch with the new eight-speed in September. The gasoline V6 TFSI will also be available here in both 272 and 333 hp flavors beginning in November 2010.