One problem related to starter has been reported for the 2020 Subaru Ascent. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2020 Subaru Ascent based on all problems reported for the 2020 Ascent.
Battery has died three times since owning. Died in garage over night 3 on separate time and no I did not leave the doors open or lights on. I had to jump the car the first time. The second time it was a week later and did the same. I had to purchase a lithium battery jump starter because I didn't have access to another car and to give me peace of mind. The third time was a few days later when I was unloading the car , took groceries into the house and came back to pull car into garage and it was dead. I went to the dealership and they gave me a run around stating I had left the either a door open or lights on. Which really ticked me off. Purchased new 3/30/2020.