The quickest way out of Formula 4
GB3 is the step between F4 and FIA Formula 3 — an FIA-sanctioned international series of 24 races in five countries, run by MSVR with the BRDC, in the fastest car of its class.
Eligibility · FIA International Grade C licence or higher · 16+ on 1 January · no prior FIA F3 starts for Rookie CupThe Tatuus MSV GB3-025
Tenth-generation MSV / Tatuus chassis · in service since 202501Mountune two-litre, four cylinder
Naturally aspirated, sealed and supplied by Mountune Racing, with equal power to every car on the grid. Thirty horsepower up on the engine it replaced, with a reworked head, inlet and exhaust for mid-range drive out of slow corners.
02F1-inspired aero, and DRS
Tatuus modelled 35% more downforce at the same drag as the previous car — the most advanced aerodynamic package at this level. DRS arrives in GB3 for the first time, opening at fixed activation points to teach drivers the tool they will use for the rest of their careers.
03Safety to Formula Regional standard
A titanium halo — stronger and lighter where the weight matters most — with new front and rear crash structures and improved anti-intrusion panels. The first Tatuus chassis built to the current Formula Regional technical requirements.
04Pirelli control tyres
The official F1 supplier stays with GB3, on wider rubber than the car it replaced: fronts up from eight to ten inches, rears from ten to twelve. One compound, one allocation, no tyre war and no hidden budget advantage.
05Gearbox, brakes and data
Sadev six-speed sequential with paddle shift, a CFD-optimised cooling package covering brakes and gearbox oil, and a control ECU logging every session. Teams and drivers get the same data feed the championship does.
Against the car it replaced
What a season here is worth
FIA Super Licence points · top five in the championshipWhere most of our rookies come from
One national season is enough to be ready
Two seasons, 48 races, points that count
The rung our champions step onto
And the paddock everyone is watching
Where the champions went
2016 · The same championship, its previous nameLando Norris won this title before he won anything else.
What the entry covers
Cars are run by the ten registered GB3 teams, not by the championship. Budgets, test packages and seat availability are quoted by each team directly — tell us what you need and we will put you in front of the right ones.
How a seat happens
Four steps · typically six weeks from first callTell us where you are
One form, two minutes. Your season so far, your licence, and what you are working with.
Any timeDrive the car
We put you on an official test day alongside teams with room on their 2027 entry.
Nov – FebChoose a team
You talk to entrants directly. We share your times and our read, nothing else.
Dec – FebSign, seat fit, go
Entry lodged with MSVR, seat and belts fitted, car number issued before the season launch.
By 31 Mar