Mechanic Urges Customer to Sell 2018 Hyundai Sonata After Finding DIY Transmission Fixes

A mechanic in Atlanta inspected a 2018 Hyundai Sonata brought in for a starter replacement and oil change. After lifting the vehicle, he noticed J-B Weld applied to the transmission, crimped transmission lines, and silicone buildup on a plug. Concerned that these signs pointed to prior amateur repairs and a possible transmission crack, he advised the customer to consider selling the car before a major transmission failure occurred. The customer responded that he still owed money on the vehicle and couldn’t sell it. The mechanic later reflected that although the car was currently drivable—with no active transmission fault codes and only a minor leak from the J-B Weld—he might have unnecessarily alarmed the customer by offering his personal opinion rather than sticking strictly to observable facts. He acknowledged uncertainty about whether the transmission would fail prematurely or potentially outlast other vehicle components. Online viewers largely supported his decision to disclose the findings, citing ethical responsibility and safety concerns. Others noted that resale value typically drops significantly once a transmission fails, making an early sale a common recommendation when serious underlying issues are suspected. However, the customer’s financial situation may limit his options to either continuing to drive the car or pursuing costly repairs.