The Pre-facelift V40's came with two types of headlamps
Halogen reflector headlamps which took regular halogen bulbs.
HID/xenon headlamps (possibly all with cornering "bending" function?)
The HID/xenon headlamps are MUCH MUCH better than the Halogen reflector headlamps and will trade blows with the newer Thors hammer LED headlamps, and in some situations will be better e.g distance.
Personally I think the V40's LED headlamps aren't the best LED lights out there....but later HIDs found in Volvos are really good.