The 24-valve, 3.0-liter V6 TDi engine is rated at 221 hp, but it generates a prodigious 406 lb.-ft. of torque, eclipsing the V6 and V8 gasoline engines already available from Audi—and torque is what counts when you’re accelerating, attempting a passing maneuver or towing a trailer. And the torque surge of the TDi is available between 1750 to 2750 rpm, too.
Fuel economy is said to be around 25 mpg combined, which eclipses the 17- and 14-mpg rating, respectively, of the gas versions; which may make the Q7 TDi more fuel efficient than the Tahoe Hybrid. We got around 22 mpg on our 700-mile test of the 2wd Tahoe Hybrid. Despite size differences, these two SUVs both weighed in at a surprising 5300 pounds.
Audi says the Q7 TDi will hit 60 mph in 8.4 seconds, which is none too shabby considering the Q7’s cargo capacity, interior room and heft. A 26-gal. tank provides a range of abut 600 miles.
Source: Popular Mechanics