Why F1 is cutting 15km from every race in 2027

Formula 1 is preparing to make every grand prix shorter. Teams have unanimously backed a plan to cut the standard race distance from 305 kilometres to 290 from 2027, which works out at roughly two to four laps fewer depending on the circuit.

It is not a regulation yet. The proposal still has to clear the F1 Commission and then be ratified by the FIA World Motor Sport Council, although that step is widely expected to be a formality given the level of agreement behind it.

The reason has nothing to do with television, attention spans or ticket prices. It is a fuel tank.

The number that forces the change

The 2026 power units split their output roughly evenly, around 50 percent from the internal combustion engine and 50 percent from the electrical side. That balance does not stay still. For 2027 it moves to about 58 percent combustion and 42 percent electrical, and in 2028 it shifts again to roughly 60:40.

Every point that moves back towards the combustion engine is a point of performance that has to come out of the fuel tank rather than out of the battery. More combustion share means more fuel burned per lap, and the tank does not get any bigger on its own. Our ERS explainer sets out how the recovery and deployment side of that equation works.

So the sum is simple. Same tank, more fuel burned per lap, fewer laps available.

A bigger tank means a new car

Because a bigger tank is not a bigger tank. It is a different car.

Fuel cell capacity is designed into the monocoque, so enlarging it means a new chassis rather than a new part. Several teams intend to carry their 2026 chassis into 2027, and asking them to build a fresh car to hold more fuel would have cost money and, just as importantly, weight. Current cars are already around 30 kilograms lighter than the previous generation after years of work, and nobody wanted to hand that back.

Faced with a choice between a new chassis and a shorter race, the teams chose the shorter race. Once that was settled, the FIA and the teams agreed that a single consistent distance across the season was better than adjusting circuit by circuit.

Fuel saving was the alternative

The alternative to shortening races was worse, and that is the part worth understanding. Without a change, several events risked becoming fuel management exercises, with drivers lifting and coasting to reach the flag rather than racing each other. Formula 1 has been there before and it did not enjoy it.

Cutting the distance protects the racing at the cost of a few laps. Whether that trade lands well depends on where you sit. Fifteen kilometres is roughly five percent of a grand prix, which is not nothing, but it is far less noticeable than a field of cars driving to a delta.

Strategy is where it will show. A shorter race compresses the pit window and changes the maths on one-stop versus two-stop, because a stint that was marginal on tyre degradation over 305 kilometres may be comfortable over 290. Teams on a one-stop are likely to find their window tighter. Teams on a two-stop may find the opposite.

Monaco stays as it is

Monaco already runs to a reduced 260 kilometres because the circuit is too slow to fit a standard distance inside the time limit, and it is unaffected by this change. It keeps its own number.

Agreed for one year, not forever

One detail is getting lost in the coverage. The reduction has been agreed for 2027 specifically, as a response to that season’s power unit balance. It is not yet a permanent feature of Formula 1.

That said, the split moves again in 2028, and the same arithmetic will apply with slightly different numbers. If 290 kilometres works next year, the pressure will be to keep it rather than to unwind it.

The 2027 calendar is still unsettled

None of it happens in a vacuum. The 2027 calendar itself is unsettled, and Formula 1 has said it will publish the schedule later than usual, in the autumn, to keep its options open.

The Bahrain and Saudi Arabian rounds were cancelled in 2026 because of the conflict in the region, and the status of the remaining Middle East events is not guaranteed. Stefano Domenicali has said that if those races cannot happen, the end of the season moves to Europe, with Imola the most likely destination. For 2027 the provisional plan still opens in Bahrain, with Malaysia named as one of the fallback options if it cannot.

That is the context in which European circuits have been positioning themselves. We looked at Germany’s case in detail in our piece on the Hockenheim German Grand Prix revival, which remains the clearest signal yet that the country wants its race back.

Two things left to settle

Two things. First, ratification, because until the World Motor Sport Council signs it off the 290 kilometre figure is a plan rather than a rule. Second, winter testing, where engineers will start talking about fuel loads in a way that tells you whether 290 was generous or barely enough.

For the wider picture on where these engine rules are heading, including the push for simpler power units, see our look at the refuelling and V8 debate.