Audi A6 sedan makes do with four cylinders, improves fuel economy - CNET

Case in point, the 2016 Audi A6 sedan, weighing almost 4,000 pounds, powered by a little 2-liter four-cylinder engine. To test the hypothesis, Audi invited me to drive the Audi A6 2. 0T along the steep canyon roads outside Malibu. Audi gave its A6 model what it termed a 'facelift' for the 2016 model year, restyling grille and parking lights, updating the infotainment system and increasing the engine power output. As you might guess, the 2-liter engine comes in at the bottom of the model line-up, and can be had in front-wheel-drive format or with Quattro all-wheel drive. The engine's turbocharger uses an electric waste gate, formerly mechanically controlled, which lets Audi better control turbo pressure and different engine speeds. An electric thermostat on the engine also lets Audi vary coolant flow, improving efficiency. And although the 2-liter is the least powerful of the available engines, which also include gasoline and diesel 3-liter V-6es, Audi still posts a zero-to-60 mph time of 5. 8 seconds for a Quattro-equipped model. Source: www.cnet.com