Source: Flickr The Infiniti QX70 is a luxury crossover selection, combining a sports car and an AUV into one incredible design. This luxurious vehicle is excellent for those who are busy but want an enjoyable experience. If you’re interested in this vehicle for your life, you might wonder - how long do Infiniti QX70s last under typical ownership? Vehicle lifespan is a vital addition to any database before investing in a car if you want to know how long a vehicle will last and how long you have before it’s time to purchase the next one.