The same could be said of houses. A roof replacement is about 10% of the typical house value, every 10-20 years. Then you have major appliances failing about every 5-10-15 years on a typical schedule (furnace, fridge, washer, dryer, dishwasher, etc.). Plumbing leaks, settling foundations, bugs/termites/ants, landscaping issues, etc. Yet houses tend to appreciate and is the largest store of wealth for many people.
I understand the concept of cars depreciating, but it does not normally seem to be in line with intrinsic value. A 50% depreciated car, would seem to be valued at 50%. Not 5% like we commonly see.