Here’s another look at the real world data in Fuelly. This time, I looked at the underlying data and threw out anything that looked questionable. For the Hybrid QX60, the MPG values are based on 199 fill ups (data points). For the Gas QX60, the MPG values are based on 108 fill ups (data points).
Hybrid QX60
Fill ups = 199
Miles Driven = 62,111.7
Gallons Consumed = 2,982.7
Max MPG = 27.7
Min MPG = 13.5
Ave MPG = 20.8
Std Dev = 2.4 MPG
Gas QX60
Fill ups = 108
Miles Driven = 30,654.1
Gallons Consumed = 1,588.2
Max MPG = 25.2
Min MPG = 14.3
Ave MPG = 19.3
Std Dev = 2.2 MPG
Hybrid QX60
Fill ups = 199
Miles Driven = 62,111.7
Gallons Consumed = 2,982.7
Max MPG = 27.7
Min MPG = 13.5
Ave MPG = 20.8
Std Dev = 2.4 MPG
Gas QX60
Fill ups = 108
Miles Driven = 30,654.1
Gallons Consumed = 1,588.2
Max MPG = 25.2
Min MPG = 14.3
Ave MPG = 19.3
Std Dev = 2.2 MPG