He then made rapid progress, winning a maiden over a mile at Kempton Park by seven lengths and the Listed Fairway Stakes over ten furlongs at Newmarket Racecourse in May.

[4] Lucarno began his four-year-old season in disappointing form, finishing eleventh in the Brigadier Gerard Stakes at Sandown Park in May and sixth of nine behind Youmzain in the Grand Prix de Saint-Cloud a month later.

[5] Sixteen days later, Lucarno contested Britain's most prestigious weight-for-age race, the King George VI and Queen Elizabeth Stakes at Ascot.

Starting the 8/1 third favourite he raced in second place until the last quarter mile but faded in the closing stages to finish seventh of the eight runners behind Duke of Marmalade, who won by a length from Papal Bull.

Lucarno failed to recover his best form in Autumn: he was beaten more than nineteen lengths when finishing fifth in the Grosser Preis von Baden and eighth of ten behind Marsh Side in the Canadian International.