# 2025 UNITED STATES GRAND PRIX

### 17 - 19 October 2025

The FIA Formula One Technical Delegate From The FIA Formula One Technical Delegate To The Stewards Document 11

Date 17 October 2025 Time 12:32 Title Technical Delegate's Report Description New PU elements for this Competition

**Enclosed 19 US GP 25 TDR3.pdf Jo Bauer**

## 2025 UNITED STATES GRAND PRIX

## 17 - 19 October 2025

From : The FIA Formula One Technical Delegate To : The Stewards Date : 17 October 2025

### Technical Delegate's Report

The following driver will start the nineteenth Competition of the 2025 Formula One World Championship with a new exhaust system (EX):

## Number Car Driver Previously used EX

22 Red Bull Racing Honda RBPT Yuki Tsunoda 7

The exhaust system used by Yuki Tsunoda is one (1) of the eight (8) new exhaust systems allowed for the 2025 Championship season and this is in conformity with Article 28.2 of the 2025 Formula One Sporting Regulations.