2010 audi a4 3.0 TDI

The 3.0-liter, 240-hp diesel that first served in the Audi Q7 has been assigned to duty in the Audi A4. We drove the 3.0 in the Q7 during last year's Audi Mileage Marathon, and both mileage and power didn't disappoint. Put into the A4, the oil burner with ...