As Karnak says, it depends on the Mosquito type, altitude, place (262s by night over Berlin, not elsewhere) etc. I reckon that towards the end of the war, one might have found, over a 24-hour period, the following Mosquito variants over Europe:
F.II (last kill in November '44!)
B.IV
FB.VI
B.IX
(PR.IX? Not sure when their last sortie was)
NF.XII
NF.XIII
PR.XVI
B.XVI
NF.XVII
FB.XVIII (rare-bird flying anti-tank gun on coastal strikes, think it was withdrawn Dec 44 or Jan 45)
NF.XIX
B.XX
B.25
NF.30
PR.32 (another fairly rare bird)
Some were faster than others... I also think a lot of Mossies were "fast enough" to get in and get away at their operational heights, as opposed to the short, low-alt, straight-line, radar-dot tail-chases we occasionally get in AH.