The 2026 Formula 1 season marks one of the biggest regulatory shifts in the sport’s recent history, with sweeping changes to car design, power units, aerodynamics and race procedures. From smaller and lighter cars to the introduction of new overtaking systems and sustainable fuels, the new rules are expected to reshape racing dynamics across the grid.
Smaller and lighter cars
One of the most visible changes in 2026 is the reduction in car size. The wheelbase has been shortened from 3600mm to 3400mm, making cars more agile and responsive.
The cars are also narrower, with the floor width reduced by 100mm. Tyres have also shrunk, with front tyres 25mm narrower and rear tyres 30mm narrower than the previous season. These changes aim to improve racing by creating more space for wheel-to-wheel battles.
In addition, the minimum car weight has dropped from 800kg to 768kg, making the cars lighter and potentially improving handling.
Major aerodynamic changes
The ground-effect Venturi tunnels used in recent seasons have been removed, significantly altering how cars generate downforce. The new design includes simplified front and rear wings and revised airflow management around the wheels.
Wheel covers have been removed, and new bargeboards help control turbulent airflow, with the goal of allowing cars to follow each other more closely and produce better racing.
New hybrid power unit structure
Formula 1’s new V6 turbo hybrid engines remain in place, but the power unit configuration has changed significantly.
The MGU-H system has been removed, while the electrical MGU-K component becomes far more powerful. Electrical output increases from 120kW to 350kW, creating a roughly 50-50 balance between combustion power and electric energy.
Energy recovery has also increased, with the battery capable of recharging more than double the previous energy limit per lap.
Sustainable fuel introduced
Another major milestone is the introduction of advanced sustainable fuel. Instead of relying on traditional fossil-based fuel, Formula 1 engines will now run on fuels derived from sustainable feedstocks such as organic waste and industrial residues.
These fuels are designed to function as drop-in replacements for conventional fuels, meaning engines do not need significant modifications.
DRS replaced by Overtake Mode
The Drag Reduction System (DRS) has been replaced by a new “Overtake Mode.” This system allows drivers to deploy an additional 0.5MJ of electrical energy, increasing acceleration and helping drivers close the gap to the car ahead.
Drivers can activate this mode when they are within one second of the car in front at a designated detection point.
Active aerodynamics and Straight Mode
Another innovation is Straight Mode, a form of active aerodynamics. In this configuration, the rear wing opens and the front wing elements adjust, reducing drag and allowing higher top speeds on straights.
The system automatically switches between high-downforce and low-drag configurations depending on the section of the track.
New energy deployment with Boost
Drivers will also have access to a Boost function, allowing them to deploy stored electrical energy strategically during a lap. This energy can be used for overtaking, defending position, or improving lap times.
Updated track zones and race procedures
Tracks will now feature Straight Mode zones instead of traditional DRS zones, marked by “SM” boards. These zones indicate where cars can activate low-drag configurations.
There is also a minor tweak to race start procedures. Because the MGU-H has been removed, drivers must now build engine revs earlier to spool the turbo before the race begins.
Qualifying format changes
With the arrival of Cadillac as the 11th team, the grid expands to 22 cars. As a result, six cars will now be eliminated in Q1 and Q2, while the final Q3 session will still feature 10 cars competing for pole position.
Higher budget cap
The extensive regulation changes have also increased development costs. The team cost cap has been raised from $135 million to $215 million, while the power unit cost cap increases from $95 million to $130 million.
With new cars, new technology and new regulations, the 2026 Formula 1 season is expected to usher in a fresh competitive era, potentially reshaping the balance of power across the grid.