After he matched Michael Schumacher's haul of seven drivers' crowns with three races remaining, a breathless Lewis Hamilton said: "I'm lost for words. This is way beyond my dreams."
Hamilton only needs to finish ahead of Mercedes teammate Valtteri Bottas to secure his seventh F1 title, equaling Michael Schumacher's record.
Leclerc came home fourth and four-time champion Vettel 10th, a result that extended the German’s season-long run of defeats by his teammate
Formula 1 2020: Sebastian Vettel admits being 'out-classed' by Ferrari teammate Charles Leclerc in qualifying
Four-time world champion Sebastian Vettel wound up down in 15th on the grid while his Ferrari teammate Leclerc was fourth.
Bottas set the pace in 1 minute 26.225 seconds, with Lewis Hamilton .136 off his Mercedes teammate in second. Ferrari showed a return to form after a run of uncompetitive races, with Charles Leclerc third fastest, .456 off Bottas, and Sebastian Vettel fifth.
Wolff has guided Mercedes to six consecutive constructors' titles, but the Austrian has hinted that he is ready to move on.
The session was red-flagged to a halt after the four-time champion’s shunt, leaving runaway championship leader Lewis Hamilton in a perilous 15th place with just over two minutes remaining.
Victory for Hamilton at the Sochi Olympic Park would see him draw level with Michael Schumacher on 91 career wins, more than any other driver in the 70-year history of F1.
Sergio Perez will be replaced next season at Racing Point by Sebastian Vettel.
Ferrari reverted back to an age-old burgundy livery for its 1,000th F1 race. But there was little to celebrate as Charles Leclerc finished eighth and Sebastian Vettel 10th.
Formula 1 2020: Sebastian Vettel says he has 'no regrets' on Ferrari stint despite failing to win titles with team
Vettel made clear he felt revitalised by the prospect of joining Aston Martin next year— but looked back with pleasure on his years at Maranello.
Racing Point said Sebastian Vettel has signed for the 2021 season "and beyond" but did not reveal the length of the contract.
Formula 1 2020: 'Nobody told me anything', Sergio Perez says he did not expect Racing Point axe on short notice
Perez, who had a contract for 2021 and believed the team wanted him to stay, learned his fate during a phone call from team owner Lawrence Stroll on Wednesday, shortly before his departure was confirmed.
Signing Vettel was "a clear signal" to the racing world, said Racing Point, which will take the Aston Martin name next year after Canadian billionaire owner Lawrence Stroll's investment in the British brand.
Formula 1 2020: Ferrari chief Mattia Binotto says team looking to put 'worst of days' behind at Mugello
Ferrari also finished outside the points in the previous race in Belgium and the second successive double flop dropped them to sixth in the constructors' championship.
Formula 1 2020: Pierre Gasly races to stunning victory at Italian GP as Lewis Hamilton handed penalty
Pierre Gasly finished 0.415 seconds ahead of McLaren driver Carlos Sainz and 3.358 ahead of Racing Point's Lance Stroll on a surreal-looking podium.
Formula 1 2020: Ferrari hurting after both drivers fail to qualify inside top 10 at Italian GP since 1984
After their pointless flop at the Belgian Grand Prix last Sunday, this was another embarrassment for the 'scarlet scuderia', but little surprise to their drivers.
Bottas was 0.229 seconds faster than Carlos Sainz and 0.323 quicker than Lando Norris after an impressive showing from the McLaren pair.
Formula 1 2020: 'We have to stay calm' urges Sebastian Vettel after Ferrari's dismal performance at Belgian GP
Neither Vettel nor Leclerc was able to make any impression, as Ferrari struggled and finished pointless outside the top ten.
Formula 1 2020: Charles Leclerc warns Ferrari fans to not expect ‘any miracles’ at Belgian Grand Prix
Leclerc admitted he and the team had no explanation for the team's slump in form this season — ahead of the next two races which are scheduled to take place on homeground in Italy.