SAKAI WILLIAM Qualifying Lap Time Records
| Lap Time | Racing Team | Racing Circuit | Race Car Model | Race Car Level | Year / Racing Series |
|---|---|---|---|---|---|
| 01:36.052 | Sportsland Sugo | Other MCS4-24 | Formula | 2025 F4 Japanese Championship | |
| 01:36.470 | Sportsland Sugo | Other MCS4-24 | Formula | 2025 F4 Japanese Championship | |
| 01:50.191 | Fuji International Speedway Circuit | Other MCS4-24 | Formula | 2025 F4 Japanese Championship | |
| 01:50.683 | Fuji International Speedway Circuit | Other MCS4-24 | Formula | 2025 F4 Japanese Championship | |
| 02:12.090 | Suzuka Circuit | Other MCS4-24 | Formula | 2025 F4 Japanese Championship | |
| 02:12.781 | Suzuka Circuit | Other MCS4-24 | Formula | 2025 F4 Japanese Championship |