| Final 19:32 | time | | gap | L | pts | 1. | China | 3:11.08 | | | 6 | 956 | | Pan Zhanle WR, Ji Xinjie 48.18s, Zhang Zhanshuo 48.63s, Wang Haoyu 47.47s | 2. | Italy | 3:12.08 | | +1.00s | 5 | 941 | | Alessandro Miressi 47.90s, Lorenzo Zazzeri 47.99s, Paolo Conte Bonin 47.83s, Manuel Frigo 48.36s | 3. | United States | 3:12.29 | | +1.21s | 4 | 938 | | Matt King 48.02s, Shaine Casas 48.47s, Luke Hobson 47.68s, Carson Foster 48.12s | 4. | Great Britain | 3:12.55 | | +1.47s | 3 | 934 | | Matt Richards 48.19s, Jacob Whittle 48.36s, Tom Dean 48.63s, Duncan Scott 47.37s | 5. | Hungary | 3:13.66 | | +2.58s | 8 | 918 | | Nandor Nemeth 47.89s, Szebasztián Szabó 48.27s, Dániel Mészáros 49.06s, Adam Jaszo 48.44s | 6. | Greece | 3:13.67 | | +2.59s | 2 | 918 | | Apostolos Christou 48.95s, Kristian Gkolomeev 48.17s, Stergios Bilas 48.38s, Andreas Vazaios 48.17s | 7. | Serbia | 3:13.88 | | +2.80s | 7 | 915 | | Velimir Stjepanović 49.10s, Andrej Barna 47.75s, Uroš Nikolić 48.86s, Nikola Aćin 48.17s | 8. | Spain | 3:14.93 | | +3.85s | 1 | 900 | | Sergio de Celis 49.03s, Luis Domínguez 48.16s, Carles Coll Martí 49.40s, Mario Mollà 48.34s |
World and Championship Record: |
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Heats - February | Best 8 times advanced to Final. |
| Heat 1 10:43 | time | | gap | L | pts | Rk | 1. | United States | 3:12.32 | Q | | 4 | 937 | 1. | | Hunter Armstrong 48.37s, Jack Aikins 48.42s, Luke Hobson 47.70s, Carson Foster 47.83s | 2. | Spain | 3:14.71 | Q | +2.39s | 3 | 903 | 7. | | Luis Domínguez 49.02s, Sergio de Celis 48.11s, Mario Mollà 48.28s, César Castro 49.30s | 3. | Hungary | 3:14.73 | Q | +2.41s | 6 | 903 | 8. | | Szebasztián Szabó 49.32s, Dániel Mészáros 48.69s, Adam Jaszo 48.43s, Nandor Nemeth 48.29s | 4. | Sweden | 3:15.37 | | +3.05s | 7 | 894 | 9. | | Robin Hanson 49.27s, Björn Seeliger 47.97s, Isak Eliasson 49.09s, Marcus Holmquist 49.04s | 5. | Canada | 3:15.74 | | +3.42s | 5 | 889 | 11. | | Javier Acevedo 48.99s, Finlay Knox 47.96s, Antoine Sauvé 49.38s, Stephen Calkins 49.41s | 6. | Lithuania | 3:17.41 | | +5.09s | 1 | 867 | 13. | | Tomas Navikonis 49.00s, Daniil Pancerevas 49.91s, Tomas Lukminas 49.10s, Rokas Jazdauskas 49.40s | 7. | Singapore | 3:18.52 | | +6.50s | 2 | 852 | 14. | | Mikkel Lee 49.64s, Jonathan Tan 48.87s, Ardi Azman 49.52s, Darren Lim 50.49s | 8. | Bulgaria | 3:20.53 | NR | +8.31s | 0 | 827 | 16. | | Josif Miladinov 50.43s, Kaloyan Bratanov 49.42s, Petar Mitsin 51.08s, Yordan Yanchev 49.60s | 9. | Thailand | 3:26.59 | | +13.27s | 8 | 756 | 18. | | Dulyawat Kaewsriyong 50.88s, Navaphat Wongcharoen 52.04s, Ratthawit Thammananthachote 52.29s, Tonnam Kanteemool 51.38s |
| Heat 2 10:48 | time | | gap | L | pts | Rk | 1. | Italy | 3:12.96 | Q | +0.64s | 4 | 928 | 2. | | Lorenzo Zazzeri 48.33s, Paolo Conte Bonin 48.16s, Leonardo Deplano 48.59s, Alessandro Miressi 47.88s | 2. | Great Britain | 3:13.96 | Q | +1.64s | 0 | 914 | 3. | | Jacob Whittle 48.82s, Tom Dean 49.13s, Duncan Scott 48.25s, Matt Richards 47.76s | 3. | China | 3:14.07 | Q | +1.75s | 5 | 912 | 4. | | Wang Haoyu 48.08s, Ji Xinjie 48.10s, Zhang Zhanshuo 49.63s, Pan Zhanle 48.26s | 4. | Greece | 3:14.33 | Q | +2.01s | 7 | 908 | 5. | | Apostolos Christou 48.92s, Stergios Bilas 48.81s, Kristian Gkolomeev 47.86s, Andreas Vazaios 48.74s | 5. | Serbia | 3:14.42 | Q | +2.10s | 6 | 907 | 6. | | Velimir Stjepanović 48.87s, Andrej Barna 47.63s, Uroš Nikolić 49.60s, Nikola Aćin 48.32s | 6. | Poland | 3:15.71 | | +3.39s | 2 | 889 | 10. | | Kamil Sieradzki 48.91s, Ksawery Masiuk 48.47s, Mateusz Chowaniec 48.76s, Kacper Majchrzak 49.57s | 7. | South Korea | 3:17.11 | | +4.79s | 3 | 870 | 12. | | Yang Jae-hoon 49.28s, Ji Yu-chan 48.90s, Lee Yoo-yeon 48.69s, Kim Min-suk 50.24s | 8. | Mexico | 3:20.41 | | +8.09s | 1 | 828 | 15. | | Andres Dupont 48.81s, Héctor Ruvalcaba 50.62s, José šngel Martínez 50.65s, Jorge Iga 50.33s | 9. | Slovakia | 3:24.70 | NR | +11.38s | 9 | 777 | 17. | | Tibor Tistan 50.82s, Matej Duša 50.35s, Richard Nagy 52.29s, Frantisek Jablcnik 51.24s | 10. | Vietnam | 3:30.37 | | +18.05s | 8 | 716 | 19. | | Trần Hưng Nguyên 51.32s, Nguyễn Huy Hoàng 54.04s, Ngô Đình Chuyền 51.98s, Nguyễn Quang Thuấn 53.03s |
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