"Mi Chico Latino" debuted at number one on the UK Singles Chart on August 22, 1999, becoming Geri's first number-one solo single in the country. It also was the beginning of a sequence of four consecutive Geri Halliwell singles reaching number one in the United Kingdom.
It spent fifteen weeks in the charts, and went on to sell almost 380,000 copies in the UK and was certified Gold by the British Phonographic Industry (BPI). "Mi Chico Latino" experienced moderate success in other European markets.
In Austria, it entered the singles chart at #34, eventually peaking at number 27 and spending a total of eight weeks on the chart.
In France, the song peaked at number 40, remaining on the chart for ten weeks in total. On the Swiss Singles Chart (dated on September 19, 1999), it peaked at #26.
In Australia, "Mi Chico Latino" debuted at its peak of #43 on the issue dated September 5, 1999. The song also experienced success in the United States, peaking at #19 on Billboard's Hot Dance Club Songs chart.