Despite recent adoption of 2.0-liter turbo-fours as the top-spec engine for the Hyundai Sonata, Ford Fusion, and Chevrolet Malibu—the idea being to combine maximum hustle and ostensibly improved economy—Honda’s venerable 3.5-liter V-6 remains as the upgrade engine in the new 2013 Accord. While the mid-size sedan’s official fuel-economy ratings do get a bump over last [...]