Recording this basically for my own reference until the database is up, but I've just finished my first tank. 517.6 miles over 14.653 gallons = 35.3 mpg. The display estimated a tank average of 36 mpg so it overestimated slightly. The mileage definitely increased towards the end of the tank as the car broke in... it'll be interesting to see what the next tank says.

The low-fuel alarm came on at 508 miles, so after about 14.4 gallons were used. The tank is 17.2 gallons so it really comes on early; you can drive alot further afterwards. Also, oddly, the "Distance to Empty" indicator said 40 miles remaining when the low-fuel alarm came on. If I had gone 30 more miles after refilling, to where it would probably hit 0, I would have used roughly 15.2 gallons, leaving two remaining... so it seems the distance-to-empty indicator uses a different "empty" mark than the low-fuel alarm. Odd.