Spent a pleasurable if frustrating couple of hours trying to figure that one out!…..
Surface mounted filler smacks of after market…
Those appear to be seam lines rather than crease lines, which suggest robustness? Range Rover?
The angle of the photograph appears quite upright, so maybe a 4x4 of some sort at least..
But there appears to be an air scoop, which suggests mid-engine?
If that is an air scoop then the filler cap is actually low down, so something low slung?
Damned if I can figure it out, but I'm intrigued to know.