6. Fuel Economy
So, the new A3 features a range of fuel-sipping engines, an advanced transmission and a lightweight body. What does all that cutting-edge technology ultimately mean? How efficient is it? Well, official EPA numbers have not been published at this time but according to Audi representatives, cars powered by the 1.8 turbo are estimated to deliver 33 miles per gallon in city driving and 49 on the highway. Combined they should average around 42 MPG in mixed driving. Again, these numbers are estimates; expect them to change… probably by A LOT.