An average driver nets around 12,000 -15,000 miles per year driving from home to work everyday with "alternate" routes as well. I came up with this equation 15,000 miles per year, on the high side, multiplied by 9 years, starting from 99' up to 08'... 15,000(mi) x 9(y) = 135,000(mi). Now, with that being calculated and with the previous post above with the car having 220,000 miles on it, I came up with this equation. 220,000(mi) - 135,000(mi) = 85,000(mi). Now, within 9 years, there are 108 months; so here is your next, logical equation, 85,000(mi) / 108(mo) = 787(mi). Add that answer to the already stated 15,000 miles and you get an average of 15,787 miles per year; to break that up even more, thats an average of 1315 miles per month, and even simpler, 329 miles per week, and 46 miles a day.
Just some random facts