50,000 miles 
I bought my car back in September '05 and when I filled the tank, before leaving Bradford to drive the car back to Ireland, it had 66950 on the clock.
Today
Only a young'un mileage-wise compared to some cars on here, but it's the most I've ever driven on one car and the longest I've owned a car.
She's only let me down 3 times, a starter motor, fuel pump failure and a fuel relay,
all original parts and well after the 100k/10 year mark, so I can't complain

Here's to the next 50k
I must give "MO" a wash and wax tomorrow!