Are Formula E Cars All the Same? Chassis vs. Powertrain Explained

Formula E cars are not all the same — every team races on the same spec chassis, battery, and Michelin tires, but each of seven manufacturers builds its own electric powertrain. That freedom creates real performance gaps: Gen3 Evo cars produce up to 350 kW in qualifying, and a stronger motor or smarter software can decide a race. This guide covers what’s standardized, what teams build themselves, and how the new Gen4 car changes things for 2026-27.

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Debunking Common Myths

The biggest misconception about Formula E is that a spec chassis means a spec car. It doesn’t. Every entrant races on the same carbon-fiber tub, the same battery, and the same tires, but the powertrain — the electric motor, inverter, gearbox, and the software that manages them — is where teams compete. One manufacturer’s motor might be quicker off the line, another’s might be more energy-efficient, and a third might recover more charge under braking. That’s enough to separate a front-runner from a backmarker even on a car that looks identical from the grandstand.

Chassis, Battery & Tires: The Standardized Elements

Three components are locked down by FIA regulation for every team on the grid. The chassis is built by Spark Racing Technology and homologated centrally — no team designs or manufactures its own tub. The battery pack is also a single-source component: Williams Advanced Engineering has supplied it through the Gen3 era, with Podium Advanced Technologies set to take over the contract for Gen4. And every car, from every team, rolls on the same Michelin all-weather tire compound, so no one gains an edge from rubber choice alone.

That standardization is deliberate — it keeps entry costs down and stops the championship from turning into a battery-and-chassis arms race like early-era Formula 1. It also means every genuine performance gap you see on track has to come from somewhere else: the powertrain a team chose to build, and how well its software uses it. For a broader look at how EV battery packs like these are actually built, see our simple breakdown of electric car battery manufacturing.

Component	Standardized Across All Teams?	Who Supplies / Develops It
Chassis	Yes	Spark Racing Technology (FIA-homologated)
Battery pack	Yes	Williams Advanced Engineering (Gen3); Podium Advanced Technologies from Gen4
Tires	Yes	Michelin (sole supplier, all-weather compound)
Electric motor & inverter	No	Each manufacturer develops its own
Gearbox & rear suspension	No	Each manufacturer develops its own
Race software & energy strategy	No	Each team codes its own control systems

Powertrain: The Differentiator

The powertrain is where Formula E stops being a spec series and becomes a genuine manufacturer contest. Teams choose or build their own electric motor, inverter, and gearbox, then write the control software that decides how power and regeneration are deployed lap by lap. That’s real engineering freedom on a car that otherwise looks identical on the grid — and it’s the single biggest reason two “same” cars can post very different lap times.

📊 Gen3 Evo cars produce up to 350 kW (470 hp) in qualifying trim, capped at 300 kW (402 hp) in the race, with up to 600 kW of regenerative braking available and a minimum weight of 840 kg including the driver. — Source: FIA Formula E, Season 12 rules explainer

Which Manufacturers Build Formula E Powertrains?

Seven manufacturers currently register their own powertrains for the Gen3 era: Porsche, Jaguar, Maserati, Nissan, DS Automobiles, Mahindra Racing, and NIO 333. Each one develops its motor, inverter, and gearbox independently, then supplies that powertrain to its own works team and, in some cases, to a customer team as well. That’s why you’ll see cars with identical liveries under the hood share nothing under the bodywork with the team parked next to them.

Aerodynamics And Design

FIA rules require every Formula E team to be listed as the car’s constructor, though the actual design and manufacturing work can be outsourced to specialist suppliers. Aerodynamics is one of the few visual areas teams can still play with inside tight regulations — front and rear wing profiles, diffusers, and sidepod shaping all affect downforce and drag differently from team to team, even though the overall silhouette has to match the homologated bodywork. It’s a smaller lever than the powertrain, but on a street circuit with tight corners, it still matters.

Tires And Handling

Every car rides on the same Michelin compound, so tire grip is not a variable — handling differences come almost entirely from how each team’s powertrain and suspension setup interact with that fixed tire. A motor that delivers power more smoothly, or a suspension geometry tuned for a specific street circuit’s bumps and camber changes, can make a car feel far more planted than its “identical” rivals, especially through the tight, low-speed corners typical of Formula E’s street tracks.

Software And Electronics

Unlike Formula 1, where much of the control software is standardized by the FIA, Formula E teams write their own race control code. Engineers use that software to squeeze more efficiency out of their powertrain, manage regenerative braking, and decide exactly how much energy to spend in each phase of the race — since every car runs on a fixed, non-swappable battery, energy management can matter as much as raw horsepower. This “software push,” as insiders in the paddock call it, is one of the least visible but most competitive parts of the championship.

Impact Of Team Resources

Because chassis, battery, and tires are fixed for everyone, a team’s budget and engineering headcount go almost entirely toward the powertrain and software instead. Getting a new powertrain onto the grid isn’t as simple as bolting it in, either — the FIA requires roughly 90 pages of homologation documentation per powertrain, plus a physical inspection at its technical headquarters in Valleiry, France, before a design is cleared to race. A well-funded manufacturer with a larger engineering team can iterate through that process faster and arrive at each new season with a more refined motor and control strategy, which is a real, measurable advantage even on an otherwise standardized car.

“The suspension is simple, but because the aero isn’t such a big factor, the suspension becomes a much bigger one.”

— Phil Charles, then-technical chief, Jaguar Formula E, speaking to The Race

How Much Power and Speed Do Formula E Cars Actually Have?

The current Gen3 Evo car produces up to 350 kW (470 hp) in qualifying and is limited to 300 kW (402 hp) during the race itself, with regenerative braking able to recover up to 600 kW back into the battery — a figure that actually exceeds some cars’ peak power output. Minimum weight, including the driver, is 840 kg, and top speed sits around 320 km/h (roughly 199 mph). None of that changes which components are standardized; it just shows how much performance the “powertrain-only” variable is actually worth.

The 2026 Gen4 Update: Formula E’s Biggest Technical Shake-Up Yet

2026 is the final season for the Gen3 Evo package. FIA and Formula E officially unveiled the next-generation Gen4 car at Circuit Paul Ricard on April 21, 2026, and it’s set to debut for the 2026-27 season. Gen4 is the first single-seater race car in history built with permanent all-wheel drive — every phase of the race, not just specific zones — and it nearly doubles Gen3’s output.

📊 Gen4 produces up to 600 kW (about 815 hp), reaches 0-62 mph in roughly 1.8 seconds and 0-124 mph in 4.4 seconds, and tops out above 208 mph — with battery capacity rising 43% to allow 55 kWh of energy deployed per race. — Source: FIA Formula E, official Gen4 unveil

Six manufacturers are currently registered to build Gen4 powertrains: Porsche, Jaguar, Nissan, Mahindra, Lola Cars, and Stellantis. The battery contract is also expected to change hands, moving from current Gen3 supplier Williams Advanced Engineering to Podium Advanced Technologies. In other words, the exact same “standardized chassis, custom powertrain” formula carries forward into Gen4 — it’s just a dramatically more powerful version of it. If you’re curious how that kind of EV performance tech eventually reaches everyday vehicles, our guide on converting a car to electric covers the consumer side of the same battery and motor principles.

Innovation And Future Developments

Formula E has always positioned itself as a proving ground rather than a pure spectacle — Michelin, Porsche, and Nissan have all pointed to lessons learned on the Formula E grid feeding back into their production EV programs, particularly around energy management software and regenerative braking calibration. As Gen4 raises the power and adds full-time all-wheel drive, expect that transfer of knowledge to road cars to accelerate too, since AWD torque-vectoring software is exactly the kind of system consumer EVs are racing to perfect.

Sustainability In Motorsport

Formula E was built around an environmental mission from day one, racing exclusively on street circuits in city centers to put electric performance in front of audiences who might never attend a traditional racetrack. Keeping the chassis, battery, and tires standardized isn’t just a cost-control measure — it also means the championship’s carbon footprint per car stays predictable and auditable, while all of the genuine innovation happens in the powertrain, where it’s most transferable to the electric road cars automakers are trying to sell.

Frequently Asked Questions

Is Formula E a spec racing series?

No, not entirely. Formula E started as a full spec series in 2014 (Gen1), but since Gen2 teams have been free to develop their own electric motors, inverters, gearboxes, and control software. The chassis, battery, and tires stay standardized, which is why it’s often called a hybrid or semi-spec formula rather than a pure one-make series.

What parts of a Formula E car are exactly the same for every team?

The carbon-fiber chassis (built by Spark Racing Technology), the battery pack, and the Michelin tires are identical for every entrant. The FIA homologates these components so no team can gain an advantage from them — all the performance variation has to come from the powertrain and software instead.

How much horsepower does a Formula E car have?

A Gen3 Evo car produces up to 350 kW (470 hp) in qualifying and is capped at 300 kW (402 hp) during the race itself, with regenerative braking adding up to 600 kW back to the battery. The upcoming Gen4 car nearly doubles that output to 600 kW, or about 815 hp.

Which manufacturers build Formula E powertrains?

Seven manufacturers currently supply their own powertrains for the Gen3 era: Porsche, Jaguar, Maserati, Nissan, DS Automobiles, Mahindra Racing, and NIO 333. Porsche, Jaguar, Nissan, Mahindra, Lola Cars, and Stellantis have registered to build powertrains for the incoming Gen4 car.

What is the Formula E Gen4 car?

Gen4 is Formula E’s next-generation race car, unveiled in April 2026 and set to debut for the 2026-27 season. It’s the first single-seater in racing history with permanent all-wheel drive, produces up to 600 kW (815 hp), and can reach 0-62 mph in about 1.8 seconds.

Do Formula E teams build their own cars?

Not entirely. FIA regulations require teams to be listed as the constructor, but the actual design and manufacturing of the standardized chassis and battery can be outsourced to approved suppliers. Teams focus their own engineering budget on the powertrain, suspension setup, and race software, which is where the real competition happens.

Conclusion

Formula E cars share a chassis, a battery, and a tire compound — but that’s where the similarities end. Seven manufacturers build their own powertrains, write their own control software, and tune their own suspension, which is exactly why one “identical” car can beat another lap after lap. With Gen4 arriving for 2026-27 at nearly double the power and full-time all-wheel drive, that gap between standardized and custom is about to matter more than ever.

Curious how this fits into motorsport more broadly? Our guide to types of race cars explained for beginners breaks down how Formula E compares to F1, NASCAR, and other series, and our beginner’s roadmap to racing cars covers how everyday drivers can get their own start in motorsport.