The old promise of motorsport was simple: race on Sunday, sell on Monday. Yet the gap between a modern single-seater and a consumer car has continued to widen. Formula E has always aimed to be different. Its manufacturers confront the same problems as electric road cars: extracting performance from finite energy, recovering power under braking and using software to control the powertrain. I talked to the Nissan team and FIA about how this has developed over the years, and where it’s heading in the era of GEN4.

Nissan is one of the poster children of technology exchange between road and track. It entered Formula E in 2018 with eight years of mass-market EV experience from the Leaf, so knowledge initially traveled from road to race. Now, as Formula E moves from GEN3 and GEN3 Evo to GEN4, Nissan says that transfer is becoming a continuous feedback loop.

“Our journey is different because we launched a mass-market EV sooner,” says Maria De Juana, head of communications for Formula E at Nissan Global Motorsports. “We started Formula E with a lot of road EV experience, but none in EV competition. The first steps were road-to-track technology transfer. We improved the race car with knowledge from the road. Now we are closing the circle so technology can cascade back into future EVs.”

That is most significant because Formula E GEN4 is far more than a routine power increase . Arriving for 2026/27, it has 450kW in race trim and 600kW, or about 804hp, in Attack Mode. It can reach 62mph in roughly 1.8 seconds, regenerate at up to 700kW and deploy active all-wheel drive throughout a race. The performance grabs attention, but the systems controlling it could matter more to Nissan’s customers.

Nissan’s Leaf Gave Formula E A Head Start

Nissan was the first Japanese manufacturer in Formula E, but not an EV beginner. The Leaf had been on sale since 2010, giving Nissan years of data on motors, batteries, inverters, regeneration and the behavior of drivers in real conditions. That changed its path compared with Jaguar, which used racing-derived control improvements to add around 12 miles of range to the I-Pace . Nissan had accumulated production-car knowledge before it had a Formula E garage.

“Our first Formula E car in 2018 used software that came directly from the Nissan Leaf,” says De Juana. “We adapted it to racing because EV technology is that flexible. A road car must also consider comfort, noise, vibration, cost and mass production. Racing lets engineers concentrate on speed, efficiency and control.”

Takuro Iwase, chief powertrain engineer at Nissan Motor Co., describes three stages. “First, we take design methods and tools from the road car to develop Formula E. Next, we take specific road technologies into racing, which is what we are doing now. The third stage is learning from Formula E and feeding it into the road car.”

The electrical principles remain shared even when the components do not. “For a road car, efficiency is not the only requirement,” Iwase says. “We also work on comfort, noise and vibration. We discard what is not relevant to racing, specify Formula E’s key factors and apply the same design methods. Road-car knowledge has helped us achieve very high efficiency in racing.”

The exchange became systematic during GEN3. Nissan bought e.dams in 2022 and placed engineers between its Japanese road-car R&D and French race team. Nissan credits that structure with improving its GEN3 Evo powertrain , which helped Oliver Rowland win the 2024/25 Drivers’ World Championship.

Formula E GEN4 Opens The Systems That Road Cars Actually Use

GEN3 made Formula E an extraordinary efficiency contest. Its front motor could recover energy but not normally propel the car. GEN3 Evo added front traction for starts, qualifying and Attack Mode. GEN4 removes that restriction and gives manufacturers more control over the car’s electronic brain.

“With GEN4, this radically changes,” says Marek Nawarecki, FIA senior circuit sport director. “For the first time, we allow more freedom in how electronic systems are designed. Manufacturers can introduce traction control, control torque distribution between the axles, manage traction independently at the front and rear motors, and develop energy recuperation during deceleration.”

Every dual-motor production EV faces the same decisions: how much torque each axle should receive, when to intervene as grip changes and how to blend regenerative and friction braking. The software must be fast, predictable and safe.

“All those systems are already used in electric road cars,” Nawarecki says. “Manufacturers can take road-car technology, improve it in racing, and test new solutions that could be used in future road cars. Active driver systems are strongly related to safety. They must be reliable and intuitive, and there is no better platform to test them than racing.”

GEN4 is controlled rather than a technical free-for-all, however. “The battery, front powertrain, chassis and everything related to aerodynamics are specification parts,” Nawarecki says. “All the rest is developed by the manufacturer - mainly the rear powertrain, electric motor, control systems, inverter and suspension. All the dynamic parts are left to the manufacturer.” A common battery restrains cost while open dynamic systems create road-relevant competition.

“The battery remains the most expensive EV technology, so with GEN4 it stays a specification part,” Nawarecki explains. “Manufacturers will focus on the rest of the powertrain and driver-control technology, because that is developing fastest in the auto industry. The technical story is much closer to what they do in road cars.”

Formula E Meets Nissan e-4ORCE

Permanent all-wheel drive is especially relevant to Nissan. Its e-4ORCE road system coordinates front and rear motors with braking control to improve traction, stability and comfort. It is used in the Ariya, including the Ariya Nismo performance SUV . GEN4 will push similar control concepts beyond 200mph through repeated grip transitions.

“e-4ORCE is not simple; it combines technologies from sensing to torque application,” Iwase says. “We are identifying those that could benefit racing and trying to implement them. With GEN4 all-wheel drive, vehicle balance is a key challenge. There is great symmetry from road to race, because balance matters for comfort in a road car and lap time in a race car.”

A customer Ariya will not receive a Formula E motor. Racing hardware lacks the cost, durability and refinement constraints of mass production. What transfers is the method: models, control logic, calibration knowledge and an understanding of the system near its limits. That is increasingly valuable as road vehicles become software-defined products whose character can change through code as much as hardware.

“For cost reasons, especially with hardware, the technology is not directly transferable,” Iwase says. “The materials differ, but the electrical equations are the same. We use road-car knowledge to improve Formula E efficiency, while racing gives us extreme conditions. That can teach us something we can eventually apply to the road car.” Nissan has already framed GEN4 this way . It was also the first manufacturer to commit to GEN4, through 2030 - logical if racing is a compressed development environment, not just marketing expenditure.

Software Makes The Formula E Feedback Loop Faster

Software changes the speed of the exchange. Teams cannot redesign homologated motors and gearboxes during a season, but they can refine their code. It is Formula E’s equivalent of Formula One’s aerodynamic upgrade race, potentially producing a new calibration for every event. “Formula E allows us to update software during the season,” Iwase says. “We can improve the car step by step and apply different technology. Nissan’s responsibility as a manufacturer is to provide the best software at any time.”

De Juana makes the pace tangible. “We can have a different software version at every race after all the preparation trials. Imagine the hundreds of versions developed throughout a season. A line of code updated in Formula E has already gone back into the Nissan Leaf, because software is much quicker to implement in a production car.”

Not every race algorithm will reach a showroom. Production cycles and validation differ, and a road car must handle millions of journeys rather than a 45-minute race. “A production cycle does not give us enough time to discover a technology in Formula E, perfect and optimize it, and feed it into a car that is already on the road today,” De Juana says. “But software can move much faster, so that is the first result of this exercise that customers can see.” Formula E also exposes weaknesses quickly and produces dense data. As my earlier reporting on Formula E’s use of AI showed , predictive energy management can matter as much as motor efficiency.

“The aim is a continuous feedback loop: track to road, road to track, then track to road again,” De Juana says. “We started with road experience and none on track. After perfecting and optimizing it in competition, we are seeing work trickle into road cars. Software comes first because it is quicker to implement and adapt.”

Formula E: From Electric Showcase To Manufacturer Laboratory

GEN4 also changes where those lessons are learned. Formula E began on temporary city tracks to take unfamiliar motorsport to new audiences. GEN1’s 200kW cars needed a mid-race car swap. The official GEN4 specification demands more permanent circuits, including the move from London’s ExCeL venue to Brands Hatch.

“Formula E began as the first showcase for electric motorsport, strongly associated with city centers,” Nawarecki says. “We had a 200kW car unable to cover the race distance. With GEN4, we will have a car at the level of the most performant single-seaters, and above them in acceleration. The more performant car carries more energy, so it needs the same level of circuit protection as other high-performance categories. The series has evolved from a city-center showcase to a proper motorsport discipline for permanent circuits.”

There is a commercial dimension. Xiaoxu Zhou, president of the FIA Electric and New Energy Championships Commission, sees races in America, Asia and Europe as two-way industry meetings. “Manufacturers show their brand and car in a market, but also receive information and connect with manufacturers and the supply chain,” he says. “It is not one direction but two. We need partners that want to define future technology and build a long-term ecosystem. They must benefit from the technology and the marketing; we do not want a manufacturer to join today and say goodbye tomorrow.”

That also describes Nissan’s engineering journey. Leaf knowledge gave Formula E a starting point. GEN3 and GEN3 Evo proved road-to-track collaboration. GEN4 opens the systems central to how modern EVs accelerate, corner, brake and manage energy, creating a better route back to consumers. “We did road to track first, and that is still our immediate aim for GEN4,” Iwase says. “In the future we will have more track to road. Formula E puts the vehicle in an extreme condition, and that teaches us how to control it properly.” Nissan’s most important GEN4 product may be neither 600kW nor a 1.8-second sprint, but knowledge that survives the checkered flag and begins another lap of the feedback loop in a road car.