Check to see what Consumer Reports' Used Car Guide says about your 2003 Beetle. It will rate it -- compared to other cars of the same model year -- for reliability on a dozen or so areas, like cooling system, suspension system, engine, electrical system, body hardware, etc. That will give you some data upon which to base a rational decision whether its better to sell it now or wait. For example if most owners say their 2003 Beetles of that year have proved to be pretty reliable, then it probably makes sense to fix what's broken and keep it. However if they say their 2003 Beetle hasn't been very reliable, then it's probably time to get another car.