Three problems related to vehicle speed control have been reported for the 2020 Subaru Legacy. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2020 Subaru Legacy based on all problems reported for the 2020 Legacy.
This vehicle is equipped with the Subaru "eyesight" system which is a number of safety features like automatic cruise control, lane keep assist, and others. About once a week on average while driving the entire system will shut down and the screen will go dark. You lose the radio, bluetooth, navigation, and all the eyesight systems. After about 30 seconds it will reboot and things will come back online but this is a major safety issue because you loose systems that help with safety. The dealership said it's a known software issue and there's nothing they can do until an update is available. I called Subaru USA customer support in September and they said an update would be available by the end of October and nothing was released. I called in early November and they said they were still working on it but had no release date.
I was driving on a four lane section going uphill on us50 in California where the speed limit is approximately 60 miles per hour. The car suddenly slowed down to approximately 25 to 30 mph. All attempts to increase the speed to 55 to 60 mph failed. I safely pull over and stopped the car and turned it off. It was restarted, and the problem did not occur again.
Traveling approximately 50 mph all the warning lights displayed and the vehicle lost power. The vehicle was pulled over to the shoulder. Unable to put it in park. Turned it off and on a couple of times before it would go into park. Drove it to the dealer but it wouldn't go more than 30 mph. This has happened three times after having this vehicle for less than six months.