Once they’re adults, they’ll take any amount of exercise you’d like to give them. A half-mile walk in the morning and again at night is enough, but they love to walk, especially outside, and will keep going as far as you will.
There is a difference in temperament based on their coat. Because the wirehaired Dachshunds have terrier in their lineage, they’re often less calm than the Longhair varieties, who are the quietest and calmest of the three types. Smooths have a personality that falls somewhere in the middle.