Moto3 2018 Termas de Rio Hondo
| Cla | # | Piloto | Moto | Tempo | Diferença | km/h | |
|---|---|---|---|---|---|---|---|
| 1 | 14 |  Tony Arbolino | Honda | 1'53.782 | 152.059 | ||
| 2 | 12 | Marco Bezzecchi | KTM | 1'54.088 | 0.306 | 151.651 | |
| 3 | 19 | Gabriel Rodrigo | KTM | 1'54.330 | 0.548 | 151.330 | |
| 4 | 7 |  Adam Norrodin | Honda | 1'54.346 | 0.564 | 151.309 | |
| 5 | 33 | Enea Bastianini | Honda | 1'54.361 | 0.579 | 151.289 | |
| 6 | 21 | Fabio Di Giannantonio | Honda | 1'54.363 | 0.581 | 151.286 | |
| 7 | 23 | Niccolò Antonelli | Honda | 1'54.366 | 0.584 | 151.282 | |
| 8 | 44 |  Aron Canet | Honda | 1'54.380 | 0.598 | 151.264 | |
| 9 | 88 | Jorge Martin | Honda | 1'54.388 | 0.606 | 151.253 | |
| 10 | 16 | Andrea Migno | KTM | 1'54.562 | 0.780 | 151.023 | |
| 11 | 5 | Jaume Masia | KTM | 1'54.568 | 0.786 | 151.015 | |
| 12 | 75 | Albert Arenas | KTM | 1'54.649 | 0.867 | 150.909 | |
| 13 | 71 |  Ayumu Sasaki | Honda | 1'54.799 | 1.017 | 150.712 | |
| 14 | 10 | Dennis Foggia | KTM | 1'54.988 | 1.206 | 150.464 | |
| 15 | 48 | Lorenzo Porta | Honda | 1'55.323 | 1.541 | 150.027 | |
| 16 | 11 |  Livio Loi | KTM | 1'55.458 | 1.676 | 149.851 | |
| 17 | 22 | Kazuki Masaki | KTM | 1'55.514 | 1.732 | 149.779 | |
| 18 | 84 |  Jakub Kornfeil | KTM | 1'55.516 | 1.734 | 149.776 | |
| 19 | 24 | Tatsuki Suzuki | Honda | 1'55.604 | 1.822 | 149.662 | |
| 20 | 65 |  Philipp Ottl | KTM | 1'55.800 | 2.018 | 149.409 | |
| 21 | 72 | Alonso Lopez | Honda | 1'55.982 | 2.200 | 149.174 | |
| 22 | 17 |  John McPhee | KTM | 1'56.107 | 2.325 | 149.014 | |
| 23 | 41 |  Nakarin Atiratphuvapat | Honda | 1'56.176 | 2.394 | 148.925 | |
| 24 | 27 | Kaito Toba | Honda | 1'56.222 | 2.440 | 148.866 | |
| 25 | 40 |  Darryn Binder | KTM | 1'56.333 | 2.551 | 148.724 | |
| 26 | 42 | Marcos Ramírez | KTM | 1'56.478 | 2.696 | 148.539 | |
| 27 | 8 | Nicolò Bulega | KTM | 1'57.976 | 4.194 | 146.653 | |
| 28 | 76 |  Makar Yurchenko | KTM | 2'00.087 | 6.305 | 144.075 |
