In addition to Jonsereds IF, 134 other teams from 27 different countries played in Boys 18. They were divided into 33 different groups, whereof Jonsereds IF could be found in Group 12 together with FC Este 2012, Irshad Football Club 1 and Bossekop UL. Jonsereds IF continued to Play off B after reaching 4:th place in Group 12. In the playoff they made it to 1/32 Final, but lost it against IFK Berga with 1-3. In the Final, Sävedalens IF won over Tidaholms GIF and became the winner of Play off B in Boys 18. Jonsereds IF also participated in Boys 18 during Gothia Cup 2018. They reached the 1/8 Final in B18 Play off B, but lost it against Kungsängens IF with 1-4.