Maintenance is key to vehicle longevity.
My vehicle is over 10 years old with over 260k miles on the original engine. No major work has needed to be done. I have just maintained the vehicle as it should be and it has treated me well. It has only given me one major problem when commuting during the over 100k miles I put on it which was due to a worn alternator. That is not even a major item. Maintenance is the key factor to prolong the life of a vehicle. Even something as simple as rotating tires can prolong the life of the tires and cause they to wear evenly and properly.