>I myself am fully in the camp of driving old vehicles and aim to be mindful of minimizing pointless consumption. Of course, you would also have to consider in

>I myself am fully in the camp of driving old vehicles and aim to be mindful of minimizing pointless consumption. Of course, you would also have to consider increasing maintenance costs and the lower fuel efficiency (and therefore higher fuel costs) of the older car. The question is how close the upgrade-your-car sweet-spot is to the end of the car's lifespan.