Adding to Audi’s increasingly well-stocked stable of U.S. diesel variants is its new-for-2014 Q5 TDI quattro. The midsized crossover SUV benefits from big-V8-like torque and a scooch better mpg than the Q5 Hybrid while costing almost $5,000 less and selling much better. In fact, the oil-burning Q5 for March was the sixth best-selling diesel passenger […]

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