2025 BYD Dolphin Surf Boost 87 hp Battery, Horsepower, Range

Common Issues and Problems with the BYD Dolphin Surf / Seagull

First Generation (2023 - Present) - Focus on Chinese-Market Seagull

The BYD Dolphin Surf is a recent global variant of the BYD Seagull, launched in China in 2023. As the Surf variant is newly released (Autumn 2025), long-term community data on its specific problems is limited. The following issues are derived primarily from the high-volume Chinese Seagull model, and may be mitigated in the re-engineered European Surf model due to hardware and software adjustments.

ADAS System Faults and Overly Aggressive Behavior Problems

The most common issue is the erratic and overly aggressive behavior of the Advanced Driver Assistance Systems (ADAS). Owners report the Lane Keep Assist violently correcting steering on clear roads and the speed limit alert being frequent, loud, and inaccurate, often resetting to "on" upon every ignition cycle. These system weaknesses are a major source of driver frustration.

Common Solutions: The system defaults to "on" and must be manually disabled at the start of each drive. Owners anticipate a future OTA software update from BYD to address the sensitivity and improve the overall reliability of these assistance systems.

Sudden Power Loss and High Voltage Battery Failures

Some users, particularly in the Chinese market, have reported critical power faults, including the vehicle unexpectedly entering "turtle mode" or experiencing a sudden loss of drive power while moving. Less frequent reports include the high-voltage battery charge level instantly dropping to 0%. Investigations often point towards faults in the Main Domain Controller or, rarely, cell imbalance within the Blade Battery.

Common Solutions: Diagnosis usually requires a dealer visit. Critical faults involving cell failure or the controller generally result in a warranty replacement of the affected component (battery or domain controller).

Ride Comfort and Suspension Weaknesses

A recurring complaint concerns the vehicle's ride quality. The suspension is often described as "bouncy" or "stiff" when navigating uneven or rough urban surfaces. This lack of refinement and dampening is linked to the vehicle's compact, budget-oriented structure (torsion beam rear suspension) and results in increased cabin noise and uncomfortable ride quality.

Common Solutions: This is a characteristic inherent to the vehicle's design and platform tuning, and a manufacturer fix for ride quality is generally not anticipated. It is a known structural weakness.

Infotainment & Connectivity Glitches Issues

The large rotating screen is prone to minor operational faults. Owners frequently experience software glitches and problems such as the system freezing, unexpectedly rebooting, or losing the 4G network connection required for navigation and smart services.

Common Solutions: Minor issues can often be solved with a simple soft reset of the infotainment unit. BYD typically addresses persistent bugs through regular Over-The-Air (OTA) software updates to improve system stability.

Conclusion

The most critical concern, based on early data from the Seagull, remains the potential for rare but serious Sudden Power Loss Faults. However, the most widespread daily issues are related to the aggressive ADAS system and the noticeable suspension weakness. Given that the Dolphin Surf is a new, re-engineered model, prospective buyers should prioritize verifying the application of the latest software updates, as these fixes are critical to mitigating the reported electronic and ADAS problems.

* Disclaimer: The information presented here is compiled from owner discussions in online communities, forums, and various open public sources. The accuracy, completeness, and reliability of this data cannot be guaranteed, and it should be used for informational purposes only.