The wagoneers are fine but the CJ's are a different animal.They are some what warm as long as you have a hard top and solid doors. Rag tops and soft doors get cold and drafty. They have improved the heaters a little to make up for it but you have to drive with the fan on high most of the time and are noisy. They are still a fun car to drive in any weather, just be careful in ice and snow as they are like any other vehicle, they don't stop any faster.