According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2020 Honda Passport has 12 documented known issues, with 5 rated critical. The most serious are Idle Stop (Auto Start-Stop) Stalling and Failure to Restart ($40-$300 repair), Brake Booster Vacuum Pump Failure ($400-$800 repair), AC Compressor Premature Failure ($500-$2,800 repair), 9-Speed Transmission Rough Shifting and Hesitation ($0-$7,000 repair) and Fuel Pump Failure (Multiple Recalls - NHTSA 21V-215, 23V-858) ($0-$0 repair). Across all issues with published estimates, repair costs range from $40 to $7,000. DIY maintenance guides at au7o.io.