George Russell loses Belgian Grand Prix victory to an underweight Mercedes

George Russell’s one-stop victory at Spa survived Lewis Hamilton’s attack but not the FIA scales. Hours after crossing the line first, the Mercedes driver was disqualified because his car weighed 1.5 kilograms below the minimum required by the technical regulations.

Russell started the Belgian Grand Prix from sixth place. Charles Leclerc inherited pole after qualifying pace-setter Max Verstappen received a grid penalty, while Hamilton started third in the second Mercedes.

Hamilton moved into second at the start and passed Leclerc for the lead on lap three. Russell initially ran behind the leading group and appeared more likely to contest the lower podium positions than victory.

The race developed around tyre strategy. Most of the leading drivers planned two stops, but Russell changed to hard tyres on lap ten and began considering whether he could complete the remaining 34 laps without returning to the pits.

The one-stop plan changes the race

Mercedes allowed Russell to continue. As Hamilton, Oscar Piastri and the other leaders made their second stops, Russell moved to the front with a set of tyres expected to be significantly slower by the finish.

Hamilton emerged as the nearest challenger. He closed rapidly during the final laps, with Piastri also approaching the two Mercedes cars. Russell positioned his car carefully through the first and third sectors and used his remaining grip effectively through the long Spa lap.

The team-mates began the final lap separated by less than a second. Hamilton could follow closely but could not complete a pass. Russell crossed the line 0.526 seconds ahead, apparently delivering a Mercedes one-two and what looked like one of the best tyre-management victories of the season.

The podium ceremony took place with Russell as the winner, Hamilton second and Piastri third. The classification then changed during the post-race technical inspections.

Fuel removal reveals the weight deficit

The Mercedes initially met the 798-kilogram minimum when it was weighed with fuel still inside. Officials then removed 2.8 litres in accordance with the required draining procedure.

When the car was weighed again, it registered 796.5 kilograms. The FIA scales were checked, and Mercedes accepted that the measurement was correct. The car was therefore 1.5 kilograms below the minimum specified by Article 4.1 of the technical regulations.

Minimum weight must be respected throughout the competition. The size of the deficit did not change the available sanction, and the stewards disqualified Russell from the result. Mercedes acknowledged that there were no mitigating circumstances and described the breach as a genuine team error.

The precise combination of factors was investigated after the race. A Formula 1 car loses mass through tyre wear, plank wear, brake wear and the consumption of fluids. Russell’s unusually long final stint also meant that his tyres had completed more laps, and therefore lost more rubber, than those of drivers using a two-stop strategy. Whatever the contributing details, the final measured weight remained below the legal limit.

Hamilton inherits victory number 105

Hamilton was promoted to first place, giving him the 105th victory of his Formula 1 career. Piastri moved to second and Leclerc to third. Mercedes retained the race win but lost the one-two finish and Russell’s individual result.

The disqualification produced an awkward contrast. Russell’s strategy had worked exactly as intended on the circuit. He had extended the tyre life, maintained sufficient pace and defended against a faster team-mate without contact. The same long stint may also have contributed to the weight loss that left the car illegal, although Mercedes did not offer that as an excuse to the stewards.

Officially, Russell completed no classified result at Spa. The laps, defence and podium celebration remained visible, but the victory disappeared when the fuel came out and the car returned to the scales.