Why You Shouldn't Upgrade Your Cars for Efficiency

Efficiency does matter, and i think that you should choose the most efficient vehicle. But there are diminishing returns with regard to efficiency. You buy a small car because it gets you to work cheaply, but then you're so frustrated that you don't have a nice four weel drive vehicle which is what you really want. It's usually more efficient just to have the higher vehicle, pay the higher fuel costs for it, and just maintain one vehicle instead of maintaining two vehicles.