Datsun 180B. Was a hand me down when mum got a new car.
Lasted till I had to start Uni. Pulled up at the lights after 30 minutes of 100km/h driving to notice that the front was engulfed with steam.
Almost boiled her dry from a nice crack along the top tank (2 people actually thought i had a fire in the engine bay the steam was that bad).
Upgraded it after that to a new Festiva