One problem related to trunk wiring 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.
Found around 1 inch of water setting under driver's seat of our 2020 Subaru Ascent touring, with only 2500 miles on it, after the car had been sitting for days with rain storms. Wife notices a sloshing sound while she drove it 1 mile and back home. Took it to the dealer and they kept it, but couldn't initially find the leak. The vehicle had a complaint of a water leak prior, with no dealer action. After two weeks of looking, the dealer said it was a missing or poorly installed grommet on the fire wall around the main wiring harness, which allowed water to flow into the passenger compartment. They are attempting to replace the entire carpet and putting in a new wiring harness, which would indicate a potential for mold and electrical issues due to poor grommet installation on the firewall. If this vehicle had not been sitting outside, the issue wouldn't of been found for a long time, causing mold and potential electrical fires in the passenger compartment. Hopefully, this will save lives and keep people healthy, if they check their firewall grommets for poor installation.