Secara beruntun Johann Zarco, Maverick Vinales, dan Valentino Rossi meraih posisi 4, 5, dan 6.
Sesi FP3 ditutup oleh crash dari Takaaki Nakagami di tikungan 14, dengan kecelakaan itu, Nakagami sudah dua kali jatuh dalam satu sesi.
Seperti ini hasil lengkap FP3 MotoGP Italita 2018.
| Pos. | Rider | Team | Time |
|---|---|---|---|
| 1 | Cal CRUTCHLOW | LCR Honda CASTROL | 2'01.866 |
| 2 | Danilo PETRUCCI | Alma Pramac Racing | 2'01.893 |
| 3 | Jack MILLER | Alma Pramac Racing | 2'02.047 |
| 4 | Johann ZARCO | Monster Yamaha Tech 3 | 2'02.076 |
| 5 | Maverick VIÑALES | Movistar Yamaha MotoGP | 2'02.088 |
| 6 | Valentino ROSSI | Movistar Yamaha MotoGP | 2'02.088 |
| 7 | Franco MORBIDELLI | EG 0,0 Marc VDS | 2'02.321 |
| 8 | Andrea DOVIZIOSO | Ducati Team | 2'02.351 |
| 9 | Marc MARQUEZ | Repsol Honda Team | 2'02.550 |
| 10 | Bradley SMITH | Red Bull KTM Factory Racing | 2'02.559 |
| 11 | Tito RABAT | Reale Avintia Racing | 2'02.640 |
| 12 | Takaaki NAKAGAMI | LCR Honda IDEMITSU | 2'02.940 |
| 13 | Andrea IANNONE | Team SUZUKI ECSTAR | 2'03.108 |
| 14 | Alex RINS | Team SUZUKI ECSTAR | 2'03.197 |
| 15 | Jorge LORENZO | Ducati Team | 2'03.482 |
| 16 | Dani PEDROSA | Repsol Honda Team | 2'03.493 |
| 17 | Karel ABRAHAM | Angel Nieto Team | 2'03.701 |
| 18 | Aleix ESPARGARO | Aprilia Racing Team Gresini | 2'03.702 |
| 19 | Thomas LUTHI | EG 0,0 Marc VDS | 2'03.813 |
| 20 | Hafizh SYAHRIN | Monster Yamaha Tech 3 | 2'03.890 |
| 21 | Scott REDDING | Aprilia Racing Team Gresini | 2'03.932 |
| 22 | Alvaro BAUTISTA | Angel Nieto Team | 2'04.235 |
| 23 | Loris BAZ | Red Bull KTM Factory Racing | 2'04.316 |
| 24 | Xavier SIMEON | Reale Avintia Racing | 2'05.077 |
Lalu 10 pembalap tercepat dari gabungan FP1 hingga FP3 akan langsung mendapat kesempatan melaju ke Q2 tanpa melalui Q1.
Seperti ini hasil gabungan dari FP1 hingga FP3.