Of all the global racing series, Formula 1 can sometimes be the most confusing, boasting covering what can and can’t be done or designed during a racing season. And for any breach of these rules, there’s an equally confusing set of penalties.

One area we often hear about during the course of an F1 season is penalties for drivers changing their engines. But in a period when the cars are , why are they handing these reprimands out, and what even constitutes an engine change?

Well, as this weekend will see , I thought now would be a good time to get to the bottom of this.

So, I’ve trawled the aforementioned 235 pages of F1's sporting and technical regulations to find out exactly what is going on when a driver is handed one of these penalties.

First up, what is an F1 engine?

Well, are comprised of six constituent components. These include the internal combustion engine, turbocharger, energy store, control electronics and two motor generator units – the motor generator unit-heat (MGU-H) and the motor generator unit-kinetic (MGU-K).

Over the course of a season, there are limits on how many of each of these components a driver is able to use without incurring a penalty.

Each driver is allowed to use three internal combustion engines, MGU-Hs, MGU-Ks and turbochargers. They can also use two energy stores and control electronics systems .

Interestingly, the regs say that if a driver is replaced during a season () their replacement will be “deemed to be the original driver for the purposes of assessing power unit usage”.

Great, but where do all the penalties come from?

So that’s the allowances each driver has in order to keep their motor running. But, what happens if you exceed these allowances? Well, that’s where the penalties come in.

Reprimands that can be imposed start at a five-place grid drop and . So far this season, we’ve seen drivers like Lando Norris take a five-place grid drop, and Alpha Tauri driver due to his engine changes.

Over the course of the 2021 season, everyone on the grid except and Antonio Giovinazzi, and and Mick Schumacher have taken penalties due to engine changes.

But why does changing an engine warrant so many different penalties?

Well, according to the rules, the first time an additional element of the power unit is fitted to a car, the driver incurs a 10-place grid drop. The next time “an additional element of the same type is used”, the driver will drop five places. That’s why and just five places in Brazil.

If additional components of the power unit are changed during the same weekend, the combined penalty for each alteration is added up. So if a driver is fitting their first new MGU-H but second turbocharger, they will drop a total of 15 places.

Here, the rules have even more to say. If any driver incurs penalties worth more than 15 places due to new engine components, they will need to start the race from the back of the grid regardless of where they qualify.

So there you have it, everything you need to know about F1 engine penalties.

Do you have any other questions about the quirky world of motorsport? Let us know in the comments section and we’ll see if we can answer them.