What is a cats life span?

The "average" lifespan of cats is much lower than the possible life expectancy, which is in a range from 10 to 17 years. The mortality rate for wild cats can be high, and most adult cats do not live 10 years, as they die of diseases, lack of nutrition, or accidents. Some fortunate cats, however, have lived up to 30 years.

The genetic makeup of the cat may be a determining factor in the length of its life, as some breeds appear more resilient than others.
Around 15-17 years but they say everything after 12 is a bonus.