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BYD Dolphin I faults

2 faults documented by at least two sources, listed by version then by mileage at onset when known.

Good choice, check first
Reliability
4.5/5

2 known faults

Dolphin Active 95 ch

  1. Software bugs, screen and driver-assistance systems

    Severity 1/3 · Annoying

    The faults reported are mainly software-related: screen freezing, unstable Bluetooth or wireless CarPlay, profiles reset after an update (Carchecker). The central screen, infotainment and overly intrusive driver-assistance systems are cited as weak points, with teething problems on 2023-2024 cars that have been eased by updates (Min Bilkoll). A New Zealand long-term test describes a remote update that made the speed-limit alert worse, its sign recognition sometimes getting it wrong (Driven Car Guide).

    Versions
    Dolphin Active 95 ch, Dolphin Boost 177 ch, Dolphin Comfort 204 ch
    Onset
    not documented
    Repair
    not documented

  2. 12 V battery discharging

    Severity 1/3 · Annoying

    A buying guide reports a DC-DC converter that may mismanage charging of the 12 V battery after an update or after a week or more of immobilisation, with the dashboard starting slowly, or the car not starting at all (Carchecker). Min Bilkoll also lists the 12 V battery among the model's weak points.

    Versions
    Dolphin Active 95 ch, Dolphin Boost 177 ch, Dolphin Comfort 204 ch
    Onset
    not documented
    Repair
    not documented

Dolphin Boost 177 ch

  1. Software bugs, screen and driver-assistance systems

    Severity 1/3 · Annoying

    The faults reported are mainly software-related: screen freezing, unstable Bluetooth or wireless CarPlay, profiles reset after an update (Carchecker). The central screen, infotainment and overly intrusive driver-assistance systems are cited as weak points, with teething problems on 2023-2024 cars that have been eased by updates (Min Bilkoll). A New Zealand long-term test describes a remote update that made the speed-limit alert worse, its sign recognition sometimes getting it wrong (Driven Car Guide).

    Versions
    Dolphin Active 95 ch, Dolphin Boost 177 ch, Dolphin Comfort 204 ch
    Onset
    not documented
    Repair
    not documented

  2. 12 V battery discharging

    Severity 1/3 · Annoying

    A buying guide reports a DC-DC converter that may mismanage charging of the 12 V battery after an update or after a week or more of immobilisation, with the dashboard starting slowly, or the car not starting at all (Carchecker). Min Bilkoll also lists the 12 V battery among the model's weak points.

    Versions
    Dolphin Active 95 ch, Dolphin Boost 177 ch, Dolphin Comfort 204 ch
    Onset
    not documented
    Repair
    not documented

Dolphin Comfort 204 ch

  1. Software bugs, screen and driver-assistance systems

    Severity 1/3 · Annoying

    The faults reported are mainly software-related: screen freezing, unstable Bluetooth or wireless CarPlay, profiles reset after an update (Carchecker). The central screen, infotainment and overly intrusive driver-assistance systems are cited as weak points, with teething problems on 2023-2024 cars that have been eased by updates (Min Bilkoll). A New Zealand long-term test describes a remote update that made the speed-limit alert worse, its sign recognition sometimes getting it wrong (Driven Car Guide).

    Versions
    Dolphin Active 95 ch, Dolphin Boost 177 ch, Dolphin Comfort 204 ch
    Onset
    not documented
    Repair
    not documented

  2. 12 V battery discharging

    Severity 1/3 · Annoying

    A buying guide reports a DC-DC converter that may mismanage charging of the 12 V battery after an update or after a week or more of immobilisation, with the dashboard starting slowly, or the car not starting at all (Carchecker). Min Bilkoll also lists the 12 V battery among the model's weak points.

    Versions
    Dolphin Active 95 ch, Dolphin Boost 177 ch, Dolphin Comfort 204 ch
    Onset
    not documented
    Repair
    not documented

Price and diagnose repairs

Read fault codes

An OBD scanner plugged in under the steering wheel shows stored fault codes, even with warning lights off: useful during the test drive.

Parts and maintenance

Compare prices of parts for the BYD Dolphin I (timing, brakes, filters) to estimate the repairs to plan for.

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