Maybe, maybe not.

The Galilean satellites of Jupiter all have appreciable intrinsic magnetic fields, and Ganymede at least is postulated to have a molten iron core. The magnetic fields of these satellites were very surprising, to say the least, and the presence of a molten iron core of Ganymede is almost inexplicable. The fields are widely attributed to currents in postulated subsurface oceans (heated by tidal flex or core heat release or both). These satellites are substantially smaller than Mars, with correspondingly smaller cores. They also rotate more slowly.

If Mars has a molten iron core half the size of the planet, as is postulated, there should be an appreciable magnetic field. But there is none.

Same situation with Venus, which has experienced extreme resurfacing -- one assumes driven by volcanism generated by release of internal heat. Indicating a molten iron core. Yet there is no appreciable magnetic field.

Something is definitely peculiar here.

Cheers, BRFelix