Its frustrating being without a camera but maybe someone can help with this ID?
This fly was on my car bonnet the other day and apparently feeding on minerals in the dust. At first I thought it must be a tabanid. Its proboscis looked very long and sharp at first glance, but when it put it on the car it did have a small double-lobed pad at the end like a regular fly.
It was probably the biggest fly I have ever seen, the same shape as a big flesh fly (Sarcophaga), only larger. It was fairly furry and a pretty lightish brown or tan base colour, the same all over the thorax, with yellow stripes on the abdomen as with a typical hover fly. I estimate it was at least 1 and 1/2 cm long and just over a cm wide.
Have just looked at pictures of the narcissus fly Merodon equestris. If anything this is more like it.
Impossible to be sure without a photo but it seems to fit slightly better from these pics http://www.bugsandweeds.co.uk/hoverflies.html