How long does a Dachshund live?
In 2004 the Kennel Club conducted a Health Survey and reported on the most prevalent conditions affecting Dachshunds. Among their data was an analysis of the age of death of 245 Dachshunds (the number recorded as having died in the total survey returns).
The histogram shows the number of dogs in each age group, ranging from 1 to 19 years old.
It is clear that 12-16 is not unusual for a large proportion of the dogs in the sample.
However, there is also a significant number that die at a young age, many of which are likely to be due to back problems (IVDD).
You can probably conclude that, for Dachshunds that do not suffer back problems and those that overcome them, they are likely to live to a ripe old age.