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Pemimpin klasemen MotoGP 2018 Andrea Dovizioso menduduki puncak sesi latihan bebas pertama di Jerez, dengan keunggulan hanya 0,007 detik Marc Marquez.
Dovizioso meraih catatan waktu tercepatnya di akhir sesi, mengatur untuk meraih catatan waktu di sektor akhir meskipun ada pembalap Aspar Ducati dari Alvaro Bautista.
Pol Espargaro, yang baru menandatangani perpanjangan kontrak dengan KTM selama dua tahun, yang baru diumumkan pada hari Rabu, berada diposisi ketiga, selisih hanya 0,043 dari Dovi.
| Cla | # | Rider | Bike | Laps | Time | Gap |
|---|---|---|---|---|---|---|
| 1 | 4 | Andrea Dovizioso | Ducati | 18 | 1’39.268 | |
| 2 | 93 | Marc Marquez | Honda | 21 | 1’39.275 | 0.007 |
| 3 | 44 | Pol Espargaro | KTM | 19 | 1’39.311 | 0.043 |
| 4 | 9 | Danilo Petrucci | Ducati | 20 | 1’39.429 | 0.161 |
| 5 | 43 | Jack Miller | Ducati | 18 | 1’39.483 | 0.215 |
| 6 | 46 | Valentino Rossi | Yamaha | 21 | 1’39.488 | 0.220 |
| 7 | 5 | Johann Zarco | Yamaha | 20 | 1’39.518 | 0.250 |
| 8 | 35 | Cal Crutchlow | Honda | 20 | 1’39.548 | 0.280 |
| 9 | 25 | Maverick Viñales | Yamaha | 16 | 1’39.559 | 0.291 |
| 10 | 45 | Scott Redding | Aprilia | 17 | 1’39.585 | 0.317 |
| 11 | 29 | Andrea Iannone | Suzuki | 21 | 1’39.614 | 0.346 |
| 12 | 36 | Mika Kallio | KTM | 21 | 1’39.817 | 0.549 |
| 13 | 41 | Aleix Espargaro | Aprilia | 17 | 1’39.899 | 0.631 |
| 14 | 26 | Dani Pedrosa | Honda | 20 | 1’39.934 | 0.666 |
| 15 | 99 | Jorge Lorenzo | Ducati | 19 | 1’39.986 | 0.718 |
| 16 | 30 | Takaaki Nakagami | Honda | 20 | 1’40.007 | 0.739 |
| 17 | 17 | Karel Abraham | Ducati | 18 | 1’40.032 | 0.764 |
| 18 | 19 | Alvaro Bautista | Ducati | 20 | 1’40.193 | 0.925 |
| 19 | 53 | Tito Rabat | Ducati | 22 | 1’40.366 | 1.098 |
| 20 | 38 | Bradley Smith | KTM | 19 | 1’40.371 | 1.103 |
| 21 | 42 | Alex Rins | Suzuki | 20 | 1’40.537 | 1.269 |
| 22 | 12 | Thomas Luthi | Honda | 21 | 1’40.585 | 1.317 |
| 23 | 21 | Franco Morbidelli | Honda | 21 | 1’40.605 | 1.337 |
| 24 | 10 | Xavier Simeon | Ducati | 19 | 1’41.471 | 2.203 |
| 25 | 55 | Hafizh Syahrin | Yamaha | 19 | 1’42.074 | 2.806 |