A combined appliance can have information for washing alone and for a full wash-and-dry sequence. The figures describe different tasks and should not be compared as if they were identical.
Understanding this situation
Check the label and product documentation for what each figure measures. A lower wash-only number does not describe the energy needed to finish drying the same laundry, and programme conditions matter.
A useful next step
Use the exact model's published information when planning use. Keep practical capacity and safe attendance in mind. If consumption appears to change unexpectedly, compare like programmes and loads rather than judging only from one printed headline number.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.