I have a 2000 Dakota that I bought new that now has 228K on it. Overall, it has been a good truck, very little trouble with it. That said, there are a couple items on it that have been mediocre since day one, the headlights and the heater.
I have spoken with other Dakota/Durango owners and they were in agreement with me. When it's below 10 degrees the heater will keep you from freezing but not really warm.