2018 Audi A3 e-tron MPG & Specs — Real Fuel Cost
Quick answer
The 2018 Audi A3 e-tron gets an EPA-estimated 34/39 MPG (city/highway) and 36 MPG combined, with an estimated $2,100/year fuel cost and 150 g/mi CO₂. Engine: 1.4 L 4-cyl.
The 2018 Audi A3 e-tron with the 1.4-liter 4-cylinder premium gasoline engine returns an EPA-estimated 34 MPG in the city and 39 MPG on the highway, for a combined 36 MPG. This page summarizes the official EPA fuel-economy and emissions data for this configuration.
| Engine | 1.4 L 4-cyl |
| Transmission | Automatic (AM-S6) |
| Drive | Front-Wheel Drive |
| Fuel type | Premium Gasoline |
| Vehicle class | Compact Cars |
| MPG — city | 34 |
| MPG — highway | 39 |
| MPG — combined | 36 |
| Annual fuel cost* | $2,100 |
| CO₂ tailpipe | 150 g/mi |
| EPA GHG score | 10/10 |
| Electric range | 400 mi |
How efficient is it?
With a combined 36 MPG, the 2018 Audi A3 e-tron sits in the very good range for fuel economy. That is about 41% better than the typical Compact Cars of its era (25 MPG class average), making it one of the more efficient choices in its class.
Fuel economy and running costs
At about $2,100 per year in fuel (EPA estimate, 15,000 mi/yr), fuel is a major part of the cost of owning the 2018 Audi A3 e-tron. Over five years that is roughly $10,500 at today's prices — before insurance, maintenance, and depreciation.
Emissions
The 2018 Audi A3 e-tron emits approximately 150 grams of CO₂ per mile at the tailpipe, earning an EPA greenhouse-gas score of 10 out of 10. Lower emissions generally track higher fuel economy.
How to read these numbers
EPA figures come from standardized laboratory test cycles and are the same estimates shown on the vehicle's window sticker. Your real-world mileage depends on driving style, conditions, fuel grade, and maintenance. Use combined MPG and annual fuel cost to compare vehicles fairly.