Exploring The Power Dynamics Of F1 Engine Specs

Formula 1 cars in 2026 run a 1.6-litre V6 turbo hybrid power unit producing more than 1,000 horsepower, split close to evenly between the combustion engine and a 350kW electric motor. The MGU-H is gone, the fuel is fully sustainable, and the whole package answers to a tighter set of numbers than any engine formula before it.

• F1’s 2026 power units keep the 1.6-litre V6 turbo hybrid architecture but remove the MGU-H entirely, while the MGU-K’s output grows from 120kW to 350kW, almost triple the previous figure.
• Combined output sits above 1,000 horsepower, split close to 50/50 between the internal combustion engine and electrical power, a considerably bigger electric share than the outgoing generation.
• Minimum car weight drops to 768kg, fuel flow is capped at 3,000 megajoules an hour under a new energy-based limit, and every power unit now runs on fully sustainable, fossil-free fuel.

How F1’s Power Unit Rules Changed For 2026

The biggest change to hit the sport’s engine rules since the hybrid formula arrived in 2014 is the complete removal of the MGU-H. Everything else beneath the bodywork has been recalibrated around that one decision, from how much power the MGU-K now produces to which manufacturers were willing to commit to building an engine at all. None of it happened quickly. The FIA’s World Motor Sport Council first signed off on the 2026 power unit framework back in August 2022, giving manufacturers roughly four years to design, build and test an entirely new hybrid system around rules that were then refined further, including cost cap revisions through late 2025, before a single 2026 points-paying lap was ever driven.

What Engines Do F1 Cars Use In 2026?

The core numbers tell the story on their own. The 2026 power unit is still a 1.6-litre V6 turbocharged engine, built around a single turbocharger and paired with a hybrid system, but the electrical side of that system has been rebuilt from the ground up. The MGU-K, the motor generator unit that recovers energy under braking and redeploys it for extra power, now produces up to 350kW, almost triple the 120kW it produced under the old rules.

The MGU-H, which used to recover additional energy from exhaust heat, is gone. Combined output across the whole power unit sits above 1,000 horsepower, with the split between the combustion engine and the electrical system close to even, roughly half and half, a considerably larger electrical contribution than the old package’s roughly 80/20 split in the combustion engine’s favour. Minimum car weight for 2026 is 768kg, and fuel flow is governed by a new 3,000 megajoule per hour cap that measures energy rather than mass, replacing the old 100kg per hour limit.

Engine Displacement And Architecture: What Hasn’t Changed

Amid all the change, the basic architecture underneath a 2026 F1 engine is remarkably familiar. The FIA’s own power unit technical regulations still specify six cylinders arranged in a 90-degree V configuration, with cubic capacity fixed at 1,600cc, plus zero and minus ten cc, and a 15,000rpm rev limit the sport has run since the current hybrid formula began in 2014.

Pressure charging is still restricted to a single turbocharger, one single-stage compressor linked by a shaft to one single-stage exhaust turbine, rather than the multiple smaller turbos some other forms of motorsport allow. The internal combustion engine itself still works the way any four-stroke, direct-injection turbo engine does, drawing in air, compressing it, igniting a fuel and air mixture and pushing the resulting exhaust gases out through that single turbocharger to force-feed the intake.

What has changed around that unchanged core is the fuel flow limit governing how much of that fuel can be burned at once, now capped by energy content rather than a simple mass figure, and a lower minimum car weight of 768kg, down 30kg on the outgoing regulations, as designers work with a smaller, lighter chassis wrapped around the same fundamental engine layout.

Power Output And The Hybrid Split

The numbers behind “close to 50/50” hold up under scrutiny. F1’s own fuel reference material puts the 2026 internal combustion engine’s output at approximately 400kW on its own, down from around 550kW under the outgoing rules, once the fuel flow reduction is accounted for. Add the MGU-K’s 350kW on top of that and combined output lands around 750kW, or a touch above 1,000 horsepower, of which the electrical share works out to somewhere close to 47 per cent, near enough to an even split that “close to 50/50” is a fair description rather than a rounded-up marketing line.

Removing the MGU-H meant finding the lost energy recovery somewhere else, and the answer was to load almost all of it onto the MGU-K. Where the old hybrid system recovered energy from both exhaust heat and braking, the 2026 system recovers it only from braking and the driveshaft, through a unit now capable of putting out 350kW, up from 120kW, an increase of almost 300kW rather than a doubling.

That electrical assistance is stored and redeployed through the car’s energy recovery system, the same basic principle as before, just with far more electrical power flowing through it and a combustion engine that now contributes closer to half of the car’s total output rather than the roughly four-fifths it used to supply. That 350kW figure isn’t available everywhere on the circuit either. The maximum permitted MGU-K output tapers off on a defined curve once a car passes 290km/h, reaching zero additional electrical assistance by 355km/h, so the fastest straights on the calendar are covered on combustion power alone once a car is deep into that speed range.

A separate overtake override extends full electrical deployment to a higher speed threshold than normal running, giving a following car a genuine, rules-based power advantage specifically in the zone where a leading car’s electrical contribution has already tapered away. The practical effect for drivers has been a car that leans more heavily on managing a finite battery charge across a lap than on simply managing fuel, since running out of stored electrical energy mid-corner or mid-straight costs real, measurable speed.

Weight, Fuel And Cost Rules For 2026

Three separate numbers define the regulatory envelope a 2026 power unit operates inside, and they’re easy to conflate with older or unrelated figures if a reader isn’t careful. Minimum car weight is 768kg, the figure that actually governs a 2026 chassis, not the older 145kg power-unit-only weight some references still quote from before the current rules took effect. Fuel flow is capped at 3,000 megajoules an hour, an energy-based limit that replaced the old 100kg per hour mass-based cap, alongside a reduced 70kg fuel allowance for the race itself, down from 110kg.

The fuel being burned within that allowance has changed as much as the number governing it. What fuel Formula 1 cars use is now blended entirely from non-food biomass, genuine waste and captured carbon rather than fossil crude. Each manufacturer still partners with its own fuel supplier to formulate that sustainable blend within the regulations, Ferrari and Haas with Shell, Mercedes and McLaren with Petronas, Aston Martin with Aramco, Red Bull with ExxonMobil and Audi with BP Castrol, so the underlying chemistry differs slightly by team even though every supplier is working to the same fossil-free rulebook.

Cost is capped twice over, and the two figures cover different things entirely. The overall team cost cap, covering almost everything a team spends running its operation, sits at $215 million a year for 2026. Separately, each power unit manufacturer operates under its own cost cap, set at $190 million for 2026 under Article E2.3.1(b) of the FIA’s Financial Regulations for Power Unit Manufacturers, a figure revised upward from an originally announced $130 million after the separate power unit capital expenditure allowance was scrapped and folded into the main cap, and up from $95 million in 2025.

Mixing the two figures up is an easy mistake, since they sound similar and both changed for 2026, but they apply to entirely different budgets. That manufacturer cap comes with practical restrictions attached to it, not just a dollar figure. Each power unit manufacturer is limited to six power unit test benches, with restricted hours of operation on top of that, a deliberate move to stop the highest-spending manufacturers simply outworking smaller rivals with round-the-clock dyno running.

What Changed From The Old F1 Engines?

The MGU-H was introduced in 2014 alongside the wider hybrid turbo formula, connected directly to the turbocharger shaft, where it worked in two directions. Under braking or off-throttle, it harvested excess energy from the exhaust gases spinning the turbo and converted it into electrical charge.

Under acceleration, it reversed roles and span the turbocharger up before the driver was fully back on the throttle, all but eliminating the turbo lag that would otherwise come with forced induction. For twelve seasons, from 2014 through 2025, it quietly did both jobs at once.

It was also, by common agreement across the sport, the single most technically demanding part of the entire power unit, built around specialist semiconductor and energy-recovery technology that only the manufacturers already in F1 had mastered. That complexity became the reason it was removed for 2026.

Cutting the MGU-H lowered the technical barrier facing any manufacturer weighing up whether to join the grid, a change credited with helping bring Audi into the sport and keeping Ford and Honda committed to their own programmes. The tradeoff is a small amount of turbo lag returning to a 2026 car that a 2025 car didn’t have, since the MGU-H’s old job of pre-spinning the turbo to hide that lag no longer exists, offset by an MGU-K nearly three times more powerful than before.

Drivers hearing the new engines for the first time have mostly reported relief rather than disappointment. Max Verstappen, asked on the Talking Bull Podcast whether he’d heard Red Bull’s new power unit running on a dyno, described it simply: “It sounded crisp.” He was quick to add the obvious caveat, that it’s “not a V10,” but said it still sounded properly like an engine rather than the flatter, quieter note some had feared from a power unit leaning even more heavily on its electrical side.

Who Builds Each Team’s Power Unit In 2026

Eleven teams share five power unit suppliers on the 2026 grid. Mercedes builds the largest customer base, supplying its own works team alongside McLaren, Williams and Alpine, four teams in total.

Ferrari’s 067/6 supplies three teams, its own works team plus Haas and the newly arrived Cadillac squad, Formula 1’s eleventh team and the first change to the grid’s overall team count in several years.

Honda’s RA626H supplies Aston Martin exclusively, its sole customer after re-entering the sport as a full manufacturer.

Audi’s AFR 26 Hybrid supplies only its own works team, the operation built on the foundations of the former Sauber entry.

Red Bull Ford’s DM01, the power unit built jointly by Red Bull’s own Powertrains division and Ford, supplies both Red Bull Racing and its sister team, Racing Bulls.

Cadillac’s arrangement is worth a closer look, since it’s the one pairing on the grid without a matching manufacturer programme behind it: the team runs Ferrari power as a customer rather than fielding an engine of its own, with General Motors’ in-house Formula 1 engine programme not expected to arrive until 2029.

Honda’s return as a full works partner is its own story. The manufacturer announced in October 2020 that it would exit F1 as a listed engine manufacturer at the end of 2021, redirecting its research budget toward electric vehicles, but Red Bull persuaded it to keep building engines through to the end of 2025 under a technical partnership, a deal that delivered Max Verstappen’s 2021 and 2022 titles along the way. What brought Honda back as a genuine works partner for 2026 was the shape of the new rules themselves. Honda Racing Corporation’s Koji Watanabe pointed to the 2026 formula’s direction toward carbon neutrality and its roughly 50 per cent electrification requirement as the deciding factor, a target that lined up closely with Honda’s own corporate push into electric vehicles. Aston Martin’s Martin Whitmarsh, closely involved in landing the deal, described the fit in blunt terms: “there was a common passion to win,” calling the synergies between the two companies “very strong.”

Every one of those power units, regardless of manufacturer, now operates under the same allocation limits for 2026, four internal combustion engines, three MGU-K units, four turbochargers, three energy stores, three control electronics units and four exhaust systems per driver across the season, each with one of those allowances counted as a bonus unit that disappears again from 2027. Exceed the limit and the penalty is a 10-place grid drop for the first breach and five places for every one after that, with 15 or more cumulative penalty places sending a driver to the back of the grid entirely.

Sources

• F1 2026: What are the new regulations, engine changes and how will the racing be with no DRS – Sky Sports
• 2026 FIA Formula 1 Financial Regulations, Section E: Power Unit Manufacturers, Issue 03 – FIA

Article reviewed and updated by Jack Renn, August 2026.

More F1 Reading

• The Golden Era Of Turbos In Formula 1
• Are Formula 2 Cars Slower Than Formula 1?
• Formula One Brake Systems Explained
• What Is The First Lap Called In F1?