Itll return an incredible 65.7mpg, while the six-speed manual A6 returns 64.2mpg. The big diesels are efficient considering the performance they offer. The 262bhp version will do 55.4mpg and the The2014 Audi A6 comes in four trims: Premium, Premium Plus, Prestige, and the performance-oriented S6. Also, there are four powertrains: 2.0T, 3.0T, TDI, and 4.0T. The 2.0 Premium has lackluster acceleration, making the 3.0T Premium Plus a Inthe 2010 Driver Power survey, most A6 owners reported their cars proved hard wearing, but did say mechanical failures were expensive to put right. Price, value for Published June 30, 2010. Practical Caravan's experts review and rate the 2008 Audi A6 Allroad 3.0 TDI Quattro Tiptronic to help you find the best tow car. The3.0-it gets its label from a new 3.0-liter V-6 that produces 220 horsepower at 6300 rpm and 221 pound-feet of torque at 3200 rpm-is available with either Audi's four-wheel-drive Quattro system InEdmunds performance testing, the 3.0T sedan went from zero to 60 mph in 5.8 seconds -- this is quicker than the time logged by the A6 4.2 (6.5 seconds) and just a tick slower than that of the ReallyGood Six. Speaking of engines, the top-of-the-line A6 is still powered by a supercharged 3.0-liter V-6 that produces 300 hp from 5250 rpm to its 6500-rpm redline and 325 lb-ft of torque 26Photos. Read what our editors have to say as they review the new 2010 Audi A6 3.0 TFSI Quattro luxury sedan, at Automobile Magazine online. cqBYaGu.