Qualifying to race
On a normal grand prix weekend, the car is deemed to be in parc ferme from the first time it leaves the pit lane during qualifying until the start of the race.
Formula 1 - Car setup
Parc ferme locks the race car, not every garage task.
In Formula 1, parc ferme is the rule set that stops teams from turning a qualifying car into a different race car. Once the car is under parc ferme conditions, setup and specification changes are heavily restricted, but basic checks, safety work, tyres, fluids, and approved repairs can still happen under FIA control.
Timing
When parc ferme starts and ends
The practical rule is simple: once the car leaves the pit lane for the key qualifying session, the team has largely committed to that car's setup for the competitive session that follows.
Sprint qualifying to sprint
On an alternative sprint format weekend, parc ferme applies from the first time the car leaves the pit lane during sprint qualifying until the start of the sprint.
Qualifying to race
The race parc ferme period also applies from the first time the car leaves the pit lane during qualifying until the start of the grand prix.
What teams cannot freely change
Parc ferme mainly protects the car's specification and setup. Once it applies, a team cannot replace parts, modify parts, or change the setup or configuration of the car unless the work is specifically permitted by the regulations or approved by the FIA Technical Delegate.
- Suspension setup: teams submit a suspension setup sheet before the car first leaves the pit lane in the relevant qualifying session.
- Aerodynamic setup: teams cannot use parc ferme to rebuild the car into a different aero configuration for the race.
- Car specification: replacement parts normally must match the allowed specification or be approved under the regulation's replacement and repair process.
- Garage work: even when the car is back with the team, it remains under FIA supervision and only permitted work may be done.
What can still be done
- Tyres and wheels: teams may remove, change, rebalance, and adjust tyre pressures within the tyre rules.
- Fluids and gases: fuel, compressed gases, permitted fluids, and driver drink systems may be serviced within the allowed limits.
- Brakes and electronics: certain inspections, checks, bleeding, charging, radio, camera, timing, and safety-system work is permitted.
- Cleaning and inspection: cars may be cleaned and inspected, including some non-destructive testing and system checks.
- Front-wing adjustment: front-wing profile adjustment is treated differently from a full setup change, but parts may not simply be added, removed, or replaced unless the rules allow it.
Damage, weather, and FIA approval
Parc ferme is strict, but it is not meant to force a dangerous or damaged car onto the track. Genuine accident damage can be repaired, and the Technical Delegate may approve specific replacement work. The important point is that the work must fit the permitted categories or receive approval; it is not a free setup reset.
- Accident damage: repairs are treated differently when damage came from barrier contact, contact with another car, or an off-track incident that cost significant lap time or led to a deleted lap.
- Same-spec replacement: replacing a damaged part with the same specification is easier to justify than fitting a different design.
- Different designs: some different-design bodywork replacements may be considered only within the regulation's approval process and limits.
- Weather and safety: FIA approval matters when climatic or safety conditions require work that would otherwise look like a setup change.
How officials police parc ferme
Parc ferme is enforced by scrutineering, seals, setup declarations, garage supervision, and cameras. Selected cars may be sent to the physical parc ferme area for detailed checks, and teams must keep the FIA informed about approved replacement parts.
- Scrutineers supervise work: officials monitor what is done to the car while parc ferme conditions apply.
- Cars can be covered and sealed: after qualifying, cars must be ready for FIA seals within the required timetable.
- Camera coverage is required: each car has a parc ferme camera view in the team's garage area during the competition.
- Unauthorized changes are costly: a breach normally means the driver starts the relevant sprint or race from the pit lane.
What parc ferme does and does not mean
- It is not just a fenced area: in F1, parc ferme is both a physical control area and a set of restrictions that follow the car back to the garage.
- It does not ban all work: teams can still perform listed maintenance, checks, safety work, and approved repairs.
- It is not only after qualifying ends: the restriction starts when the car first leaves the pit lane in the relevant qualifying session, or at the end of the first segment if it never leaves.
- It is not a penalty by itself: parc ferme is the condition. The penalty comes if the team breaches that condition.
- It does not erase other penalties: a driver can still receive separate F1 penalties, grid drops, or component penalties under other rules.
Where parc ferme fits in a race weekend
Parc ferme explains why teams talk so much about choosing between qualifying pace and race pace. The setup decision is linked to <a href="/formula-1/qualifying-and-sprint-rules/">qualifying and sprint formats</a>, tyre strategy, and the risk of starting from the pit lane if a team decides the car must be changed after it has been locked.