F1 Power Units Explained: The Five Elements, Allocations And Grid Penalties

A 2026 Formula 1 power unit is a five-element package, built by one of five manufacturers, and rationed by the FIA: every driver gets a fixed pool of components for the season, and going over it costs grid places rather than money. Between them, the internal combustion engine and the MGU-K produce a combined peak of about 750kW, or 1,000 horsepower, split roughly down the middle between combustion and electric power. That pool sits on top of a tight new supplier map: five manufacturers now build for the whole grid, and which one actually sits behind a given team’s badge is not always obvious from the constructor’s name alone.

• A 2026 power unit has five elements: the ICE, the turbocharger, the MGU-K, the Energy Store and the Control Electronics. The MGU-H no longer exists.
• Five manufacturers supply the entire 2026 grid across eleven teams: Mercedes, Ferrari, Red Bull Ford Powertrains, Honda and Audi.
• Each driver’s 2026 allocation is four ICEs, four turbochargers, three MGU-Ks, three Energy Stores and three sets of Control Electronics for the season.
• That allocation is one component richer than the pre-2026 baseline, a bonus the FIA has now extended through 2028.
• Exceeding the pool costs ten grid places the first time a component type goes over, and five more each time after that for the same type.
• More than fifteen cumulative unserved penalty places sends a driver to the back of the grid outright.

What Are the Five Elements of a 2026 F1 Power Unit?

The five elements are the internal combustion engine, the turbocharger, the MGU-K, the Energy Store and the Control Electronics. The MGU-H, the second electric motor that recovered heat from the turbo throughout the last regulation era, was deleted entirely for 2026, and every present-tense description of a power unit on this site now assumes it is gone.

The engine and turbocharger form the combustion side of the package, capped at 400kW (536hp) between them, running a strict fuel-flow limit and a turbo built specifically to tame the lag the deleted MGU-H once controlled.

The MGU-K, the Energy Store and the Control Electronics form the electric side, adding a further 350kW (469hp) of power recovered under braking, stored across a 4MJ per lap swing and redeployed on demand through Manual Override Mode. The Control Electronics are the layer that actually ties all five elements together week to week, metering fuel flow, managing the energy budget lap by lap and enforcing every limit the FIA writes into the rulebook, making it as much a compliance tool as a performance one.

Who Builds F1 Power Units in 2026?

Five manufacturers supply the entire 2026 grid. Mercedes builds for itself, McLaren, Williams and Alpine. Ferrari builds for itself, Haas and Cadillac. Red Bull Ford Powertrains, a new manufacturer entry for 2026, supplies Red Bull and Racing Bulls. Honda returns as a manufacturer to build for Aston Martin, and Audi builds only for its own team. Eleven teams, five manufacturers, the tightest supplier map the sport has run in decades.

Running a customer engine does not make a team’s constructor its supplier’s name, since a customer team’s championship points and constructor credit always stay with its own name rather than its engine badge, which is why Racing Bulls competes and scores as Racing Bulls even while running Red Bull Ford power.

How Many Power Units Do F1 Drivers Get Per Season?

For 2026, each driver’s allocation is four ICEs, four turbochargers, three MGU-Ks, three Energy Stores and three sets of Control Electronics for the season, verified against the FIA’s 2026 Formula 1 Sporting Regulations. That is one more combustion component and one more electrical component than the pre-2026 baseline of three and two respectively, a concession built in to cover the reliability risk of an entirely new power unit generation. It was meant to last a single season. Midway through 2026 the FIA confirmed the same relaxed pool would carry through 2027 and 2028, judging that cutting it back on schedule would put unreasonable pressure on manufacturers still chasing reliability. The season limits extend beyond the five elements themselves: exhaust systems and the grouped power unit ancillary components carry their own pools under the same penalty ladder.

Every manufacturer effectively started from a blank sheet for 2026, since the MGU-H’s deletion and the MGU-K’s near-tripled output rewrote how a power unit manages heat and electrical load across a season rather than within a single lap. That kind of relief is typical of a rulebook that rewrote almost everything about the 2026 car, not just the power unit.

The limit exists for cost as much as fairness. A power unit is the single most expensive component on the car, and an unlimited-use rule would turn the championship into a reliability spending war between manufacturers rather than a genuine engineering contest. Rationing the pool keeps durability a competitive discipline in its own right.

Why Do F1 Drivers Get Grid Penalties for Engine Changes?

Go over the allocation and the penalty is grid places, under Article B8.2 of the FIA’s Sporting Regulations. The first time a driver exceeds the season limit for a given component type it costs ten places; every additional exceedance of that same component type after the first costs five more, and penalties for different component types stack on top of each other at the same event. Accumulate more than fifteen cumulative unserved penalty places, under Article B2.5.4b.iv, and the driver starts at the back of the grid outright, regardless of the exact number owed.

Lance Stroll’s British Grand Prix infringement is the clean single-driver version of the maths. Stewards fitted him with a fifth Energy Store and a fifth Control Electronics unit, each costing five places because both components were already into their second exceedance of the season, for ten places total, to be served at his next race.

Two weeks later at Spa the system ran at full volume. Isack Hadjar took a fifth ICE, turbocharger and exhaust set together, one more than the permitted four of each, for ten places apiece and thirty in total. Fernando Alonso’s twenty-place hit blended a fifth Energy Store and fifth Control Electronics unit at five places each with a seventh Power Unit Ancillary Component’s fresh ten-place penalty, while Carlos Sainz took a much simpler ten-place drop for a fourth Control Electronics unit, his first time over that particular limit. Both Hadjar and Alonso passed the fifteen-place threshold and started from the back of the grid regardless of the exact totals they owed.

Teams play the calendar as much as the rulebook. A fresh, guaranteed-to-last power unit is worth more at a circuit where overtaking is genuinely possible than at one where track position decides the race, so engineers plan changes around low-speed rounds and save the newest components for the run through the flyaway races, where reliability under sustained load counts for the most.

The system also creates its own second-order strategy. A team already resigned to a grid penalty at one round will often bring forward other component changes it was going to need anyway, taking every penalty at once rather than paying the fee twice across two separate weekends. Title contenders treat the pool as a season-long budget as much as a technical constraint, and the calendar’s mix of overtaking-friendly and processional circuits is exactly what that budget gets spent against.

What Happens When a Power Unit Fails?

A failure ends the race outright, and it also spends a pool component the driver never chose to use. Verstappen’s retirement from the 2026 Monaco Grand Prix is the clearest example: a fault developed on the formation lap and cost him the race before it had properly started, though Red Bull had already scheduled a fresh power unit for the following round regardless, which turned a bad weekend into an ordinary swap rather than an emergency one.

Not every failure lands that neatly. A component that breaks mid-season, away from a planned changeover point, forces a team to choose between nursing a compromised part for the rest of the year or taking the grid penalty early, while there is still a full run of races left to recover the points.

How much of the pool a team has left by that point shapes the decision. A failure in the first third of the season is a shrug, since a full complement of fresh components is still available; the same failure in the final third can force a driver to take a component early and absorb the penalty rather than risk a repeat failure with nothing left in the pool to replace it.

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Power Unit FAQs

Sources

• FIA 2026 Formula 1 Sporting Regulations, Section B
• FIA British Grand Prix 2026 stewards’ decision — Car 18, PU elements changed
• FIA Belgian Grand Prix 2026 stewards’ decision — Car 18, PU element changed
• Yahoo Sports — Every F1 Grid Penalty Issued at the 2026 Belgian Grand Prix
• BBC Sport — Honda and Alpine breach F1 engine cost-cap rules
• SportsOrca — F1 Cost Cap 2026: What Counts and What’s Excluded

Reviewed by Jack Renn, July 2026

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