The Yuki Tsunoda became the first driver to use the second of a total of three engines allowed this season as Honda replaced all other power unit components after his crash in the Imola qualifying.
In 2021 F1 season, drivers can use 3 ICE, 3 TC, 3 MGU-H, 3 MGU-K, 2 ES, 2 CE and 8 EX.
Should the number of races in the 2021 Championship drop to 19 or less, the permitted number of motor generator units-kinetic (MGU-K) will be reduced to 2.
The first time an additional element is used: Ten (10) grid place penalty.
The next times an additional element of the same type is used: Five (5) grid place penalty.
If a driver incurs a penalty exceeding fifteen (15) grid places he will be required to start the race from the back of the starting grid.
Any of the seven elements will be deemed to have been used once the car’s timing transponder has shown that it has left the pit lane.
During any single Event, if a driver introduces more than one of the same power unit element which is subject to penalties, only the last element fitted may be used at subsequent Events without further penalty.
If a driver is replaced at any time during the Championship his replacement will be deemed to be the original driver for the purposes of assessing power unit usage.
Status: Before Portuguese GP (race 3/23)
| Driver | Car | PU | ICE | TC | MGU-H | MGU-K | ES | CE | EX |
| Lewis Hamilton | Mercedes | Mercedes | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Valtteri Bottas | Mercedes | Mercedes | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Max Verstappen | Red Bull | Honda | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Sergio Perez | Red Bull | Honda | 1 | 1 | 1 | 1 | 2 | 2 | 1 |
| Daniel Ricciardo | McLaren | Mercedes | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Lando Norris | McLaren | Mercedes | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Lance Stroll | Aston Martin | Mercedes | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Sebastian Vettel | Aston Martin | Mercedes | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Fernando Alonso | Alpine | Renault | 1 | 1 | 1 | 1 | 1 | 1 | 3 |
| Esteban Ocon | Alpine | Renault | 1 | 1 | 1 | 1 | 1 | 1 | 2 |
| Charles Leclerc | Ferrari | Ferrari | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Carlos Sainz | Ferrari | Ferrari | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Yuki Tsunoda | AlphaTauri | Honda | 2 | 2 | 2 | 2 | 3 | 3 | 2 |
| Pierre Gasly | AlphaTauri | Honda | 1 | 1 | 1 | 1 | 2 | 2 | 1 |
| Kimi Raikkonen | Alfa Romeo | Ferrari | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Antonio Giovinazzi | Alfa Romeo | Ferrari | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Nikita Mazepin | Haas | Honda | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Mick Schumacher | Haas | Honda | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| George Russell | Williams | Mercedes | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Nicholas Latifi | Williams | Mercedes | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
ICE – internal combustion engine, TC – turbo charger, MGU-H – motor generator unit heat, MGU-K – motor generator unit kinetic, ES – energy store, CE – control electronics, EX – exhaust system.
2021 F1 CALENDAR
| 1 | Bahrain | 28 Mar |
| 2 | Emilia Romagna | 18 Apr |
| 3 | Portugal | 02 May |
| 4 | Spain | 9 May |
| 5 | Monaco | 23 May |
| 6 | Azerbaijan | 6 Jun |
| 7 | Turkey | 13 Jun |
| 8 | France | 27 Jun |
| 9 | Austria | 4 Jul |
| 10 | Great Britain | 18 Jul |
| 11 | Hungary | 1 Aug |
| 12 | Belgium | 29 Aug |
| 13 | Netherlands | 5 Sep |
| 14 | Italy | 12 Sep |
| 15 | Russia | 26 Sep |
| 16 | Singapore | 3 Oct |
| 17 | Japan | 10 Oct |
| 18 | USA | 24 Oct |
| 19 | Mexico | 31 Oct |
| 20 | Brazil | 07 Nov |
| 21 | Australia | 21 Nov |
| 22 | Saudi Arabia | 05 Dec |
| 23 | Abu Dhabi | 12 Dec |
