I have a 1999 Renault Clio, that I got in 2002. It gets 45mpg (official figures - I have never measured, but hopefully with hypermiling I get more).
I learned to drive in it at the age of 18, and am still driving it at age 30, now with a carseat in the back.
I get loads of comments about still driving my "teenager" car, but it still works, so I still drive it.
I just brought it in for its annual government car test (called the NCT - kind of like the MOT or smog testing) - a legal requirement.
IT PASSED!!!!
Here's to many more years of happy driving!