2018 · Subcompact Car · Gas
2018 Audi A3 MPG & fuel economy
The 2018 Audi A3 is a subcompact car offered in 4 EPA-rated configurations. The most efficient version returns 29 MPG combined (26 city / 35 highway) on regular gasoline. Across the lineup, combined ratings range from 25 to 29 MPG. Efficiency is unchanged from the 2017 model. Among 44 subcompact cars rated for 2018, it ranks 7th for lowest fuel cost. At 15,000 miles a year with $3.10/gal regular gas, it costs about $1,603 a year to fuel.
What will it cost you?
Your mileage and prices are saved and used across the site.
Fuel average
The 2018 Audi A3's fuel average is 12.3 km/L (8.1 L/100 km), or 29 MPG combined: 11.1 km/L in the city and 14.9 km/L on the highway.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City | 26 | 11.1 | 9.0 |
| Highway | 35 | 14.9 | 6.7 |
| Combined | 29 | 12.3 | 8.1 |
How it ranks among 2018 Subcompact Cars
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
A3 MPG across model years
Full history →4 EPA-rated configurations
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| FWD · 2.0L 4-cyl turbo · 7-speed dual-clutch A3 |
Gas | 26 MPG | 35 MPG | 29 MPG | — | $1,603 |
| FWD · 2.0L 4-cyl turbo · 7-speed dual-clutch A3 Cabriolet |
Gas | 25 MPG | 33 MPG | 28 MPG | — | $1,661 |
| AWD · 2.0L 4-cyl turbo · 6-speed dual-clutch A3 quattro |
Gas | 24 MPG | 31 MPG | 27 MPG | — | $1,722 |
| AWD · 2.0L 4-cyl turbo · 6-speed dual-clutch A3 Cabriolet quattro |
Gas | 22 MPG | 30 MPG | 25 MPG | — | $1,860 |
Specs (most efficient configuration)
- Fuel
- Regular gasoline
- Engine / motor
- 2.0L 4-cyl turbo
- Transmission
- 7-speed dual-clutch
- Drivetrain
- FWD
- Passenger volume
- 86 cu ft
- Cargo volume
- 12 cu ft
- Tailpipe CO₂
- 303 g/mi
- EPA fuel economy score
- 6/10
- EPA greenhouse gas score
- 6/10
2018 Audi A3 vs. rivals
Compare the 2018 A3
With any other car from any year, including other A3 model years. Type a year to jump, e.g. "2015 Accord".
Same year, other powertrains: 2018 Audi A3 Plug-in Hybrid (83 MPGe + 36 MPG)
Frequently asked questions
What is the gas mileage of the 2018 Audi A3?
Up to 29 MPG combined (26 city / 35 highway); ratings range from 25 to 29 MPG depending on configuration.
What fuel does the 2018 Audi A3 use?
Regular gasoline.
What is the fuel average in km/L for the 2018 Audi A3?
The 2018 Audi A3's fuel average is 12.3 km/L (8.1 L/100 km), or 29 MPG combined: 11.1 km/L in the city and 14.9 km/L on the highway.
How much does it cost to fuel the 2018 Audi A3 per year?
About $1,603 at 15,000 miles a year with $3.10/gal regular gas, or $10.69 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.