Has the Rear Seat Vibration Issue in Song Plus DM-i Been Resolved?
2 Answers
Song Plus DM-i rear seat vibration issue has not been resolved. Start-up Vibration: Insufficient fuel combustion leads to inadequate vehicle power and low ignition energy. Suspension System Issues: Body vibration is also related to aging suspension systems. If there are problems with the suspension, these vibrations will directly transmit to the steering wheel and cabin, affecting driving. Tire Issues: For tires, when replacing new tires or new rims, tire balancing must be performed. Otherwise, uneven weight distribution can easily cause steering wheel vibration. Throttle Issues: The most common cause of vehicle vibration may be a dirty throttle and excessive carbon buildup in the fuel injectors.
I've driven several Song Plus DM-i models, and the rear seat vibration issue did exist, especially in early versions. You could feel noticeable shaking when the engine engaged at low speeds or during start-stop, primarily due to unoptimized control logic in the DM-i hybrid system. From what I understand, BYD has been gradually improving this issue through OTA software updates since late 2022. My 2023 model barely experiences rear seat vibrations anymore, especially after upgrading to the latest ECU version. If vibration concerns you, I recommend checking the vehicle's production date before purchase – preferably 2023 or later models – or visiting a 4S store to have them install the latest program. Many owners in our group chat have reported these updates significantly improved ride smoothness, though minor fluctuations may still occur occasionally on rough roads, which falls within normal parameters. Overall, BYD responded quite promptly this time, with notable improvements in rear seat comfort, making it ideal for enjoying quiet space during family road trips.
