Arriving later, during a time when sports racing car design was developing rapidly, the J2X was not as successful in international racing as the J2, as it was not as competitive compared to more advanced C- and D-type Jaguars, alongside Mercedes, Ferrari, and Maserati works entries. Thus, it headlined less often in major international races and of 199 documented major race starts in the 9 years between 1952 and 1960, J2X's garnered 12 first-place finishes; 11 seconds; 17 thirds; 14 fourths; and 10 fifths.