BYD Dolphin Design Mk1

BYD recalled approximately 97,000 Dolphin and Yuan Plus models in 2024 for a defect in the column-assist electric power steering (CEPS) controller. Microcracks in the capacitors can expand during use, potentially causing short circuits and overheating. The recall covers vehicles manufactured between November 2022 and December 2023. BYD dealers install an insulation pad as the fix, free of charge. When buying used, verify the recall status with BYD using the VIN. If the recall has been completed, the risk is resolved. If not, the repair is covered by BYD. Outside of the recall, EPS warning lights and temporary steering stiffness have been reported occasionally, typically resolved through software recalibration (€60-180) or sensor realignment. Control unit replacement is rare and costs around €600-800.

The 12V auxiliary battery can drain if the car sits unused for extended periods (typically 2-3 weeks). Symptoms include slow dashboard startup, random warning messages, and infotainment reboots. The BYD system should automatically top up the 12V from the main pack, but this function can be inconsistent. Some owners have found loose terminal connections (particularly under the passenger seat area) that cause similar symptoms. Setting a scheduled charge timer in the car's settings can prevent deep sleep mode issues. Replacement cost for the 12V battery is €120-260 including labor. Using a smart trickle charger during extended parking periods prevents the problem entirely.

Multiple owners report intermittent infotainment issues including screen freezes, Bluetooth dropping mid-call or music stream (reconnection takes 2-3 minutes), and Apple CarPlay connectivity problems. OTA updates have addressed many early bugs, but new updates have occasionally introduced fresh issues, such as a more aggressive speed limit alert sound. Screen freezes can typically be resolved by holding the power button for a system reboot. BYD service centers can flash firmware directly onto the car's modules, recovering approximately 95% of problematic screens without hardware replacement. The cost is typically €0 (OTA fix) to €120 for a dealer diagnostic and manual firmware flash. Hardware failure requiring screen replacement is rare.

Some owners report knocking or clunking from the front suspension over rough surfaces, typically appearing after 30,000 km. The cause is premature wear of the lower control arm bushings. The relatively heavy battery pack puts additional stress on the suspension components compared to equivalent ICE hatchbacks. Replacement of the bushings (or entire control arms if needed) costs approximately €200-500 depending on whether just bushings or complete arms are replaced. Stabilizer bar link wear and loose interior trim clips can contribute to additional rattling sounds. Wheel alignment should be checked after any suspension work (additional €50-80).

The heat pump system is generally effective but some owners report slow cabin heating in cold weather (5-10 minutes to reach set temperature) and inconsistent temperature control. A small number of owners have experienced AC compressor failure, typically between 20,000-35,000 km. Compressor replacement costs approximately €800-1,200 at a BYD dealer. Software recalibration of the HVAC system and temperature sensors can resolve milder symptoms for €0-120. Most climate issues fall within the 6-year warranty period. Note: in very cold conditions (below -5 degrees C), the LFP battery pre-conditioning draws significant energy, reducing available range by 20-30%.

Build quality on early European-market Dolphins (2023 models particularly) has been a noted weak point. Owners report dashboard trim separating from clips, door panel rattles developing over time, and the steering wheel covering showing wear after 15,000-25,000 km. Some early European deliveries also had issues related to extended storage during shipping (including mold in cabin areas for cars stored in humid conditions). Production quality improved noticeably for 2024 and 2025 model year cars. Fixes are generally inexpensive: re-clipping trim (€50-100), adding felt tape to vibrating panels, or steering wheel re-covering (€150-300). These are cosmetic rather than mechanical issues.

This is a characteristic of LFP battery chemistry rather than a defect, but it significantly affects usability for cold-climate owners. Below 10 degrees C, DC fast charging speed drops noticeably. Below 0 degrees C, the battery may accept only 10-20 kW instead of the maximum 88 kW. The battery pre-conditioning system helps, but it takes time and energy. AC home charging is less affected. This is not a warranty issue and has no repair cost, but potential buyers in cold climates should understand the limitation. The 2026 facelift improved DC charging speed to 110 kW in optimal conditions.