The phrase "excellent mpg" means that a vehicle has good fuel efficiency, meaning it can go a long way without using too much gasoline. Full definition
Under the hood, you'll find a Turbo Charged 3.0 Liter 6 Cylinder that provides 300hp that is coupled with a 6 Speed Automatic helping this Rear Drive machine achieve excellent mpg! (usedcarsgroup.com)
Really smooth handling, great interior and exterior, excellent mpg, eco friendly, panamera sunroof is awsome and modern looking. (cars.com)
Smooth ride, excellent mpg and looks stunning. (carbuyer.co.uk)