Southampton’s Manolo Gabbiadini also scored, along with Lorenzo Insigne, Eder and Federico Bernadeschi.
Giampiero Ventura’s side are level with Spain at the top of Group G with four games left to decide who will face the prospect of an annoying play-off.
Diego Costa put his club troubles behind him with a goal for La Furia Roja against Macedonia and will now focus on finding a new club.
Manchester City’s David Silva also struck for the former world champions to beautifully set up September’s monster clash against Italy at the Bernabeu.
Bristol City’s Hordur Magnusson struck the winner for Iceland vs Croatia to draw level with their opponents at the top of Group I.
Turkey are hot on their heels after thrashing Kosovo and are now two points back in third.
UEFA World Cup qualification results
Moldova 2-2 Georgia
Republic of Ireland 1-1 Austria
Serbia 1-1 Wales
Israel 0-3 Albania
Italy 5-0 Liechtenstein
Macedonia 1-2 Spain
Finland 1-2 Ukraine
Iceland 1-0 Croatia
Kosovo 1-4 Turkey