The FIA Formula 3 Championship was created to consolidate European junior single-seater racing under a single, unified pathway toward Formula One. Dallara, already the supplier of multiple junior series, was the logical choice to design and build the series' dedicated chassis. As the championship operates as a spec formula, every team and driver on the grid races identical machinery, eliminating the possibility of a hardware advantage and keeping costs predictable across the field.
The F3 2019 chassis is closely derived from the GP3/16 that preceded it, sharing much of its structural architecture while incorporating targeted modifications. The front end was redesigned to offer a wider range of suspension setup possibilities, and anti-intrusion side panels were added as part of an ongoing push to raise passive safety standards. The overall car is slightly longer than the GP3/16.
A defining feature of the F3 2019 is the halo cockpit protection device — a wishbone-shaped titanium structure mounted directly to the monocoque above the driver's head. The halo had been mandated across FIA-sanctioned single-seater categories following extensive testing, and its inclusion in the F3 2019 brought junior formula safety standards in line with Formula One.
The rear wing retains a Drag Reduction System (DRS) flap to assist overtaking, a feature carried over from the GP3 generation to maintain competitive racing without relying entirely on aerodynamic efficiency.
The F3 2019 carries forward the 3.4-litre naturally aspirated V6 engine supplied by Mecachrome Motorsport, the same unit that powered the GP3/16. However, power output was modestly reduced from approximately 400 bhp to 380 bhp, a deliberate calibration decision to keep the car accessible for younger drivers moving up from lower formulas while still providing a meaningful step up from kart-level machinery.
Pirelli continued as the official tyre partner for the FIA Formula 3 Championship from the inaugural 2019 season onward. Tyre dimensions and rim sizes followed the same 13-inch wheel rim specification used by the GP3/10, GP3/13, and GP3/16 before it, maintaining continuity in the junior formula's technical environment.
The Dallara F3 2019 served the FIA Formula 3 Championship across six consecutive seasons from 2019 through 2024, making it the longest-serving chassis in the championship's history. Over that span, it was the machine through which a generation of junior drivers — many with ambitions to reach Formula One — developed their racecraft under rigorous, level-competition conditions. The longevity of the chassis reflected both its technical durability and the series organisers' willingness to extend the homologation cycle, as had been done with predecessor cars in the GP2 and GP3 families, to control costs within the junior series ecosystem.
The Dallara F3 2019's six-year tenure underlines the manufacturer's established approach to junior formula machinery: a conservative evolutionary design philosophy that prioritises reliability, safety compliance, and cost stability over headline-grabbing technical novelty. By bridging the GP3 era and the forthcoming F3 2025 generation, the car served as a transitional but long-lasting cornerstone of the FIA single-seater pyramid below Formula One.