Doc 8 - Power Unit Information
Technical/Scrutineering
2026 UNITED STATES GRAND PRIX - Document 8
- From: The FIA Formula 1 Race Director
- To: All Teams, All Officials
- Date: 22 October 2026
- Time: 17:20
- Subject: Power Unit Information
📋 Competition Information
| Item | Detail |
|---|---|
| Round No. | R18 |
| Venue | Austin |
| Centreline | 5.513 km |
| Format | Standard |
| Date | 22-25 October |
⚡ Power and Energy Limits
Maximum Recharge per Lap (Article C5.2.10)
| Session / Condition | Recharge Limit |
|---|---|
| Race (Overtake not active) | 8.5 MJ |
| Race (Overtake active) | 9.0 MJ |
| Qualifying | 8.5 MJ |
| Free Practice Sessions | 9.0 MJ |
| Out laps other than in Race | 9.0 MJ |
Maximum PU Power Reduction Rate (Article C5.12.8)
- Power Limited Distance: 2847 m
- Rate Limit: 100 kW/s
Maximum DC Power of ERS-K Function vs Car Speed (Article C5.2.8)
| Condition | Power Mode |
|---|---|
| Sprint & Race (Main Overtaking Zones) | Base - Overtake |
| Sprint & Race (Other parts of the Lap) | Base - Standard |
| Any Practice Session incl. Qualifying | Alt 1 |
🔍 Identification of Sectors Where Exceptions Apply
Note: Sectors indicated by
[ ]are for Sprint Qualifying (SQ) and Qualifying (Q) only.
Alternative Power Curve (Article C5.2.8iii)
- T4-T8: 1300-1850 m
- T12-T20: 3700-5250 m
PU Power Reduction Greater than 150kW at Start of Power Limited Pending Period (Article C5.12.4)
| Sectors | Lap Distance Window [m] | Max PU Power Reduction Permitted |
|---|---|---|
| T4-T8 | 1300-1850 | 350 kW |
| T12-T15 | 3700-4200 | 350 kW |
| T16-T20 | 4500-5250 | 350 kW |
| [Exit T20] | [5280-5500] | [350 kW] |
Reset of MGUK Power Reduction Permitted (Article C5.12.5)
- Exit T16: 4500-4750 m
- [Exit T20]: [5350-5500 m] (SQ and Q only)
Sectors with a Higher Speed Threshold (Article C5.12.7)
- T16-T17: 4430-4600 m (Speed threshold: 250 km/h)
🏁 Overtake (Article B7.2)
- Detection Gap: 1.0 s
- Detection Line: 5326 m (L21)
- Activation Line: 5420 m (L1)