- Antonelli To Start Italian GP From Back Of Grid As Mercedes Takes Full Engine Penalty
Kimi Antonelli will start his home Italian Grand Prix from the back of the grid after Mercedes elected to replace multiple power-unit components on the championship leader’s car, accepting a 20-place penalty as part of a wider attempt to manage reliability risks through the final stages of the Formula 1 season.
The decision could have significant consequences for the title race. Antonelli holds a 59-point lead over Mercedes team-mate George Russell and Ferrari’s Lewis Hamilton, while reigning world champion Lando Norris is 83 points behind after taking consecutive victories.
Mercedes has generally possessed one of the strongest cars during the 2026 season, particularly during its early stages, but reliability problems with the W17 have complicated its championship campaign. Antonelli suffered an electrical shutdown while running second at the Barcelona-Catalunya Grand Prix in June, damaging one engine, before Mercedes discovered another engine problem following July’s British Grand Prix.
That sequence forced Mercedes to install Antonelli’s fourth engine at the Belgian Grand Prix, taking him to the maximum number permitted without penalty. The new internal combustion engine being introduced at Monza will therefore be his fifth of the season and would, on its own, have resulted in a 10-place grid drop.
Mercedes has instead chosen what team principal Toto Wolff described as taking “the full thing”. The team will replace additional components, including the energy store and control electronics, which carry five-place penalties each and push Antonelli’s total sanction to 20 grid positions.
Under FIA rules, once accumulated power-unit penalties reach 15 grid places or more, the driver is required to start from the back. Antonelli will consequently begin Sunday’s race behind the rest of the field regardless of where he qualifies.
The timing initially appears unusual because Monza is Antonelli’s home race and potentially one of the most emotionally significant weekends of his season. But Mercedes believes the characteristics of the Italian circuit make it one of the least damaging places to absorb a penalty that the team expected would eventually become unavoidable.
Monza’s long straights and multiple overtaking opportunities give a fast car a better chance of recovering from the rear than at tighter circuits. The calculation is therefore less about sacrificing the Italian Grand Prix than choosing where the inevitable sporting cost can be minimised.
“Monza is an energy-starved circuit with four overtaking zones,” Mercedes trackside engineering director Andrew Shovlin said. “A driver cannot defend all of them, so a faster car should be able to make progress relatively straightforwardly.”
History provides some support for that strategy. Valtteri Bottas recovered from the back to the podium at Monza in 2021 after an engine change, while Max Verstappen won the 2022 Belgian Grand Prix from 14th on the grid, demonstrating how competitive machinery can limit the damage of penalties at circuits conducive to overtaking.
Mercedes is also making the decision because its existing hardware cannot necessarily be trusted to survive the remainder of the campaign. Shovlin said the team had lost internal combustion engines at relatively low mileage, forcing engineers to consider not merely whether new components would be needed but where introducing them would cause the least competitive damage.
“The primary factor is when the hardware is needed,” he said. “We have lost internal combustion engines at relatively low mileage, so we know we must introduce new components by a certain point.”
That creates a classic championship trade-off. Continuing with higher-mileage equipment could preserve Antonelli’s grid position in the short term but raise the possibility of a retirement later in the season, while taking fresh components now guarantees a penalty but potentially reduces reliability risk across several subsequent races.
Mercedes also has the advantage of championship margins that provide some room to absorb a poor result. Shovlin acknowledged that the team’s position in both championships influenced the timing, arguing that there was logic in accepting the setback now rather than waiting until the points margins became narrower later in the year.
That calculation nevertheless carries risk. Antonelli’s 59-point advantage over Russell and Hamilton could be reduced substantially if he struggles to recover through the field, while another victory for Norris would bring the McLaren driver materially closer after his recent run of form.
The penalty could therefore turn Monza into one of the most consequential weekends of the championship even if Mercedes views it primarily as a strategic hardware decision. Antonelli’s challenge will be to maximise points rather than realistically expect to fight from the front from the opening laps.
Mercedes must also manage a similar issue on Russell’s car. The British driver is expected to exceed his own engine allocation later in the season and incur grid penalties, although Sky Sports reported that he will not join Antonelli at the back at Monza as the team continues to assess when best to introduce fresh components.
Deputy team principal Bradley Lord described the problem as a continuing balance between the reliability risk associated with older components and the championship cost of accepting a penalty.
“We must manage the remaining events so that both cars reach the end of the season with the freshest and best-performing hardware possible,” Lord said. “It is a constant trade-off between the risk of running high-mileage components and the points cost of taking a grid penalty and recovering through the field.”
There are 12 rounds listed as remaining in the 2026 season, although the source notes that this could fall to 11 depending on whether the Qatar and Abu Dhabi Grands Prix take place. After Monza, the championship moves to Madrid, Azerbaijan, Malaysia and Singapore before entering its final sequence of races.
For Antonelli, that schedule explains why Mercedes is prepared to accept the pain now. Taking a comprehensive power-unit change at a circuit where overtaking is comparatively achievable could give him fresher hardware for a succession of races where grid position may be more difficult to recover.
The decision nevertheless turns his home Grand Prix from an opportunity to extend his championship lead into an exercise in damage limitation. Monza will test not only the outright speed of the Mercedes but Antonelli’s ability to navigate traffic, protect the car and recover enough positions to prevent his rivals from substantially eroding his advantage.
Mercedes is effectively sacrificing track position today to buy reliability tomorrow. If Antonelli can recover strongly and carry fresher power-unit components into the closing rounds, the decision may prove a calculated championship investment.
If he loses a significant portion of his lead, however, Monza could become the weekend that tightened a title fight Mercedes had previously appeared to control.
