I don't know how you guys drive your Focus by my Average MPG on my car has actually been slightly overestimating what I've gotten over my real world mileage based on what I've calculated out of my tanks, but it's very close to accurate. When I first purchased the car, I had 14.3 Avg MPG with only 22 miles on the odometer. I remember that clearly. Now at 2.8K miles, I have not reset my Average MPG since and it has now gone all the way up to 37.5 MPG but I've actually calculated 36.7 MPG over my 8 tanks so that is very close!! Distance to E is also very accurate and calculates how many miles you have on your tank based on long term averages of fuel-ups.
2013 Ford Focus Titanium Hatchback | Tuxedo Black Metallic | Handling Suspension | Tuscany Red Leather Interior | Moonroof | MFT/Sony/NAV