The 2011 Porsche 911 is available in multiple trims, each with its own estimated fuel economy, here are the EPA estimates for each trim:

1. GT3 RS: 14 MPG City and 21 MPG Highway
2. Carrera GTS: 18 MPG City and 26 MPG Highway
3. GT2 RS: 16 MPG City and 23 MPG Highway
4. Targa 4: 18 MPG City and 25 MPG Highway
5. Targa 4S: 18 MPG City and 18 MPG Highway
6. GT3: 14 MPG City and 21 MPG Highway
7. Carrera: 18 MPG City and 26 MPG Highway
8. Carrera 4: 18 MPG City and 25 MPG Highway
9. Carrera 4S: 18 MPG City and 25 MPG Highway
10. Carrera S: 18 MPG City and 26 MPG Highway

It is important to remember factors such as driving style, weather conditions, and the use of features such as Eco mode can impact fuel efficiency.

The Porsche 911 received a rating of 3.5 out of 5 stars from RepairPal, which RepairPal describes as Above Average. This rating ranks the Porsche 911 as 43​​ out of 68​​ among Luxury Midsize Car