You shell out a lot of cash to buy a new car, not only in the way of loan payments (complete with interest), but also for registration, insurance, fuel, and of course maintenance. So it only makes sense to protect your investment so that it can continue to serve your transportation needs for many years to come and retain as much value as possible for eventual resale or trade-in. And part of the process includes regular cleaning and detailing. But you don't necessarily have to spend a ton of money on upkeep.