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Why has my car lost power?

Power loss may be constant or appear only during acceleration, hills or a reduced-power mode. Dashboard warnings and diagnostic data help narrow the cause.

What it may indicate

  • The vehicle accelerates less than normal
  • A check-engine or reduced-power warning appears
  • The fault appears under load or at certain RPM

What to check

  • Record when the symptom occurs and any warnings
  • Read fault codes and live data
  • Inspect ignition, fuel, intake and other systems based on diagnosis

When to prioritize an inspection

If power drops suddenly, the engine runs severely rough, smoke appears or a critical warning is shown, reduce use and arrange inspection.

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