# Citroën Racing’s Gen4 Leap: Inside the Technical Revolution Redefining Formula E

**By Luca Bertolini**  \nPublished August 4, 2026  \nUpdated September 9, 2026

> As Citroën Racing refines its Gen4 challenger for the upcoming Formula E season, a structural shift toward permanent four-wheel drive and 600 kW power spikes promises to redraw the competitive map.

When Citroën Racing pulled the wraps off its new electric single-seater ahead of Season 13, the unveiling carried the weight of a fundamental engineering reboot. Confirmed initially during the E-Prix in Madrid and subsequently put through its paces at the Guadix circuit in Spain by development driver James Rossiter and double Formula E champion Jean-Éric Vergne, the Gen4 machine represents the most aggressive technological break in the championship’s history. For an outfit using its debut season as a foundational laboratory, the upcoming generation offers an immediate pathway to bridge the gap in a tightly contested electric field.

The headline numbers are staggering, but the structural implications are what truly alter the engineering calculus. Unlike its predecessor, the Gen3—which restricted all-wheel drive to specific, intermittent phases such as qualifying and Attack Mode while deploying up to 300 kW on the rear axle in standard conditions—the Gen4 introduces permanent four-wheel drive. In standard race trim, power leaps to 450 kW. When drivers unlock qualifying mode or engage Attack Mode, output surges to a maximum of 600 kW, translating to over 800 horsepower. To harness that energy without cooking the tyres or spinning up the rears on tight street circuits, the car integrates an advanced traction control system designed to strictly limit wheel slip across every phase of cornering.

## Aerodynamic Flexibility and Regenerative Demands

Power without management is worthless in modern Formula E, a reality reflected in the Gen4's dual aerodynamic architecture. Teams will no longer rely on a single, one-size-fits-all aero package. Instead, Citroën Racing and its rivals can choose between two distinct configurations:

- **High-Downforce Package:** Optimized explicitly for qualifying, built to maximize cornering speeds and extract every thousandth of a second on a single flying lap.
- **Low-Downforce Setting:** Tailored for race distance, prioritizing high straight-line terminal velocity and critical energy efficiency over peak mid-corner grip.This aerodynamic split introduces a fascinating strategic trade-off. Teams must decide whether to sacrifice race efficiency for starting grid position on claustrophobic circuits like Monaco, or save their energy management for Sunday afternoon. Compounding this complexity is the massive leap in regenerative braking capacity. Where the previous generation capped energy recovery at roughly 600 kW, the Gen4 scales that ceiling up to 700 kW. The resulting efficiency gain shifts the tactical burden onto race engineers, who must orchestrate energy harvesting under stricter tolerances than ever before.

## Design Language and Corporate Transitions

Visually, the car currently wears a transitional "camouflage" livery before Citroën rolls out its permanent French-heritage racing identity for the season opener. Designed under the direction of Pierre Leclercq, the temporary wrap centers on the brand's iconic double chevrons. The livery that we present this week is a camouflage livery, conceived as a transition before the introduction of a more expressive and dynamic identity, integrating the colors of Citroën and its French heritage, noted Pierre Leclercq via Stellantis media channels.

This aesthetic evolution coincides with a broader corporate shuffle within Stellantis. While DS Automobiles concludes its multi-champion tenure in the discipline—marking its final campaign before handing the group's high-performance electric baton to Opel—Citroën Racing is doubling down on Formula E as the ultimate proving ground for its EV technology. With testing miles accumulating at Guadix under the watchful eye of drivers like Vergne, Doriane Pin, and Rossiter, the development team is racing against the calendar to validate its software maps and thermal thresholds.

## Evidence-Led Forecast: The Gen4 Competitive Landscape

When the Gen4 era officially commences for the 2026/2027 season alongside rival heavyweights like Porsche, Jaguar, Nissan, Mahindra, and Lola Cars, the tactical pattern of races will shift dramatically. Permanent four-wheel drive combined with 700 kW regeneration will virtually eliminate the straight-line lagging seen in tight hairpin sequences, shrinking the lap-time delta between electric single-seaters and traditional open-wheel categories.

**Decisive Matchup:** The championship battle will likely be decided by how effectively software engineers balance the 450 kW base race output with the high-downforce qualifying setups. Teams that master the transition from single-lap agility to low-drag race efficiency will control the front rows.

**Strongest Counter-Case:** Skeptics point out that the sheer magnitude of 600 kW power spikes in street-circuit traffic could trigger chaotic energy deficits, leading to extreme defensive driving and cautious pacing if regeneration models fail to align with tyre degradation rates.

**What Would Change the Read:** Unforeseen reliability gremlins in the permanent AWD front-axle assembly during early winter testing could force conservative power mappings from the FIA, blunting the anticipated performance explosion and neutralizing the technological gains made by aggressive manufacturers like Citroën.

## Sources

- [Didier Laurent](https://sports.auto-moto.com/formule-e/citroen-racing-peaufine-sa-gen4-35272) — original
- [Frédéric Lagadec](https://lesvoitures.fr/formule-e-e-prix-monaco-citroen-raccing/) — original
- [Faris Bouchaala](https://motorsactu.com/citroen-racing-devoile-sa-monoplace-gen4-pour-la-saison-13-de-formule-e/) — original
- [Nicolas LAPERRUQUE](https://www.dna.fr/magazine-automobile/2026/06/02/la-future-monoplace-de-citroen-va-vous-faire-changer-d-avis-sur-la-formula-e) — original
- [media.stellantis.com](https://www.media.stellantis.com/fr-fr/citroen-racing/press/citroen-devoile-sa-nouvelle-monoplace-pour-l-arrivee-de-la-gen-4-en-formula-e) — original
- [ouest-france.fr](https://www.ouest-france.fr/sport/auto/formule-e/video-jean-eric-vergne-nous-fait-decouvrir-la-nouvelle-citroen-gen4-de-formule-e-2bbfd7f8-f772-3804-a67b-d06aa1bb8fb1) — original