The Audi A6 offers a powerful engine, engaging handling, and a beautiful interior, according to motor journalists. It comes standard with a turbocharged 4-cylinder engine, but reviewers prefer the optional V6 engines which provide more power. The A6 also has an optional 8-speed automatic transmission that shifts smoothly. It achieves good fuel economy and the diesel model is particularly efficient. Test drivers praise the A6's smooth ride and athletic handling, and its high-quality interior with comfortable front seats. The 2014 A6 comes well-equipped with features like leather seats and an infotainment system, though some find the system not as easy to use as competitors'.