Romain Grosjean has been disqualified from sixth place in the Italian GP after the floor on his Haas car was ruled illegal.

Haas have announced their intention to appeal.

"We do not agree with the Stewards' decision to penalize our race team and we feel strongly that our sixth-place finish in the Italian Grand Prix should stand. We are appealing the Stewards' decision.” -- from Guenther Steiner, team principal. — Haas F1 Team (@HaasF1Team) September 2, 2018

Force India drivers Esteban Ocon and Sergio Perez are promoted a place apiece to sixth and seventh respectively, while Williams' Sergey Sirotkin moves in to 10th for his first F1 point.

Renault, who lodged the protest after Sunday's race, also move back ahead of Haas in to fourth place in the Constructors' Championship having originally dropped behind at Monza.

Speaking before the punishment was known, Haas team boss Guenther Steiner said of their rivals' protest: "I find it a bit bizarre."

Revised Italian GP Race Result - top 10 Driver Team 1) Lewis Hamilton Mercedes 2) Kimi Raikkonen Ferrari 3) Valtteri Bottas Mercedes 4) Sebastian Vettel Ferrari 5) Max Verstappen Red Bull DSQ) Romain Grosjean Haas 6) Esteban Ocon Force India 7) Sergio Perez Force India 8) Carlos Sainz Renault 9) Lance Stroll Williams 10) Sergey Sirotkin Williams

What happened after the race had finished?

Renault lodged a protest with the stewards over what FIA race director Charlie Whiting said concerned "a small detail on the leading edge of the floor" on Grosjean's car.

Both teams were summoned to see the stewards, while the FIA's technical delegate examined Grosjean's car in parc ferme.

After a lengthy investigation, a statement said 'the reference plane of car number 08 is found not to be in compliance' with neither the regulations nor a subsequent technical directive issued in July, which teams had to comply with by Monza.

Grosjean was subsequently disqualified and the final Monza classification revised.

What did Haas do wrong?

The matter at the heart of Renault's protest centred around technical regulations concerning F1 floors.

In a detailed explanation of the situation, the FIA said it had previously emerged that the 'text of this Article was being applied differently by several different teams' and that a technical directive clarifying the issues was issued to all teams on July 25 ahead of the Hungarian GP.

The technical directive 'in essence gave the teams until the Grand Prix of Monza to comply with the clarification'.

In their defence to the stewards, Haas said they had contacted the FIA's technical chief, Nikolas Tombazis, to say that 'given the forthcoming summer break, we will endeavour to introduce this upgrade for the Singapore GP, but will be somewhat at the mercy of our suppliers so we would request some flexibility in this matter'.

Italian GP Race Report

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However, the FIA said that Tombazis had told the team's aerodynamics chief that 'while he understood their supply problem, that if the car was not corrected by Monza - that they would leave themselves open to protest by other teams'.

The stewards heard several further submissions from Haas' representatives on Sunday evening, but ultimately ruled against the American team.

'While the Stewards are also sympathetic to the difficulties of producing these parts, the Stewards noted that at least one other competitor was able to comply in the time provided," read the stewards' verdict.

'Further, it was made clear to the competitor from the outset that the FIA Technical Department did not consider their car to be in compliance, and further that they left themselves open to the circumstances they now find.

'It was therefore the obligation of the competitor to be in compliance, which they did not do.'

What changes after Grosjean's disqualification?

Renault retake fourth place from Haas in the Constructors' Championship. The Enstone team now have 86 points whereas Haas drop back to 76.

Force India move ahead of Toro Rosso to seventh in the Constructors' Championship on 32 points after Ocon and Perez are promoted a place apiece. The rescued team's 2018 tally had been reset to zero ahead of last week's Belgian GP

Sirotkin scores his first F1 point - meaning all 20 drivers on the 2018 grid are now off the mark.

Grosjean slips back to 14th in the Drivers' Championship

Revised Constructors' Championship Team Points 1) Mercedes 415 2) Ferrari 390 3) Red Bull 248 4) Renault 86 5) Haas 76 6) McLaren 52 7) Force India 32 8) Toro Rosso 30 9) Sauber 19 10) Williams 7

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