43,000 miles (mas o menos)
35ish mph (it's been reset a few times, but somewhere around there)
30./something mpg (again, I reset it all the time, but somewhere around there)
Sometimes 1.5/5, sometimes 4.8/5, avg: 3.9
65/35 (highway/city by mileage)
No carbon buildup as of yet as far as I know.
Additional: bought the car 01/31/12 with 12k miles. Mileage was at about 42.5k by 10/9/12