Marc Marquez memimpin jalan di sesi latihan bebas ketiga Sabtu pagi, unggul dari Maverick Vinales seper seribu detik.
Berikut hasil lengkap FP3 MotoGP Assen 2018:
| Pos | Driver | Team | Time | Gap |
|---|---|---|---|---|
| 1 | Marc Marquez | Honda Team | 1:33.341 | |
| 2 | Maverick Vinales | Yamaha MotoGP | 1:33.342 | 0.001 |
| 3 | Cal Crutchlow | LCR Honda | 1:33.347 | 0.006 |
| 4 | Valentino Rossi | Yamaha MotoGP | 1:33.388 | 0.047 |
| 5 | Andrea Iannone | Suzuki Ecstar | 1:33.403 | 0.062 |
| 6 | Jorge Lorenzo | Ducati Team | 1:33.787 | 0.446 |
| 7 | Aleix Espargaro | Aprilia Racing | 1:33.825 | 0.484 |
| 8 | Alvaro Bautista | Angel Nieto Team | 1:33.848 | 0.507 |
| 9 | Andrea Dovizioso | Ducati Team | 1:33.872 | 0.531 |
| 10 | Pol Espargaro | KTM Racing | 1:33.915 | 0.574 |
| 11 | Johann Zarco | Yamaha Tech 3 | 1:33.939 | 0.598 |
| 12 | Jack Miller | Pramac Racing | 1:33.968 | 0.627 |
| 13 | Danilo Petrucci | Pramac Racing | 1:33.986 | 0.645 |
| 14 | Dani Pedrosa | Honda Team | 1:34.073 | 0.732 |
| 15 | Tito Rabat | Avintia Racing | 1:34.151 | 0.810 |
| 16 | Alex Rins | Suzuki Ecstar | 1:34.202 | 0.861 |
| 17 | Bradley Smith | KTM Racing | 1:34.624 | 1.283 |
| 18 | Scott Redding | Aprilia Racing | 1:34.637 | 1.296 |
| 19 | Takaaki Nakagami | LCR Honda | 1:34.722 | 1.381 |
| 20 | Franco Morbidelli | Marc VDS | 1:34.988 | 1.647 |
| 21 | Karel Abraham | Angel Nieto Team | 1:35.215 | 1.874 |
| 22 | Hafizh Syahrin | Yamaha Tech 3 | 1:35.576 | 2.235 |
| 23 | Thomas Luthi | Marc VDS | 1:35.828 | 2.487 |
| 24 | Xavier Simeon | Avintia Racing | 1:35.927 | 2.586 |
