Has the rear seat vibration issue of Song Plus DM-i been resolved?

[OSkylar]

The rear seat vibration issue of Song Plus DM-i has not been resolved. Additional information is as follows: Advantages: Green license plate, exempt from purchase tax, no license plate restrictions, hybrid fuel and electric use, and DC fast charging (the only one in the world). Low fuel consumption and low electricity consumption (low energy consumption) result in lower charging costs. No transmission, smooth acceleration, and no jerky feeling when switching between the motor and engine. The vehicle starts silently. The exterior is attractive, and the interior materials are solid. The rear seat space is spacious. Disadvantages: Poor rear seat sound insulation; the trunk depth is not large enough; no spare tire (a common issue with new energy vehicles, except for the Yuan EV rear-mounted version); wireless charging issues: slow charging, overheating, and the charging area is not visible when the phone is placed inside (the phone's automatic brightness will be very dim), etc.

[NovaLynn]

Regarding rear seat vibrations in the BYD Song Plus DM-i, based on my own experience and discussions with fellow owners, the issue appears to have been optimized. Early models purchased last year commonly exhibited slight vibrations in the rear seats when the engine started, attributed to factors such as imperfect hybrid system transition logic or insufficient suspension tuning. Subsequently, the manufacturer addressed this through OTA software updates and service campaigns, including adjustments to engine control strategies, which reduced vibration frequency. Owners of post-2023 models report significantly improved conditions, and dealerships can now provide hardware inspections such as engine mount replacements if needed. If vibrations persist, it's advisable to seek professional diagnostics promptly. Additionally, discussing hybrid vehicle maintenance essentials—like regular tire pressure checks, brake system inspections, and avoiding forceful engine starts at low battery levels—can enhance overall ride comfort.

[McMorgan]

From a technical perspective, the rear-seat vibration in the Song Plus DM-i primarily stems from its plug-in hybrid design: vibrations generated during power module transitions are transmitted to the cabin. Early issues frequently occurred during engine startup or high-speed driving, potentially linked to insufficient suspension damping or inadequate software calibration. BYD responded swiftly, optimizing suspension damping and electronic control logic in subsequent batches, with significant improvements observed after OTA updates. Additionally, checking wheel balance and tire wear is crucial, as these factors collectively impact driving smoothness. Most minor issues can be resolved through simple diagnostics, and well-maintained new vehicles rarely exhibit this problem.

[AmirFitz]

The manufacturer has been proactive in addressing the vibration issue. BYD has incorporated improvements into subsequent vehicle designs based on user feedback, with post-2022 production versions already implementing these enhancements. Software updates have also helped alleviate vibrations. Many owners in the community have confirmed the smoothness of newer models, while older versions can schedule free system refreshes at 4S stores. The issue is now largely under control and does not affect daily usage.

[LeoFitz]

Rear seat vibrations not only affect comfort but may also indicate underlying issues. I recommend owners first check if tire pressures are consistent and maintained at recommended values, and not to overlook the condition of engine mounts during hybrid system maintenance. If experiencing vibrations in a Song Plus DM-i, promptly contact after-sales service for diagnosis; routinely avoid frequent low-battery driving to reduce system load. BYD's service is quite reliable, with many similar issues resolved in a single adjustment, and they can also share tips for extending vehicle lifespan.

[AthenaRose]

Overall, the vibration issue has been well addressed. The new car has optimized the driving and riding quality, and most recent model owners I've met praise its smoothness. In the future, DM-i technology will become more intelligent to minimize such discomforts, and experienced owners sharing solutions on forums is also highly effective. Considering the development trend of hybrid vehicles, staying updated with manufacturer announcements can help prevent minor fluctuations in advance.