Lewis Hamilton scotched any suggestion he might still challenge for the Formula One drivers' title after an Imola nightmare on Sunday. 

The seven-time champion placed 13th at the Emilia Romagna Grand Prix and was lapped by race winner Max Verstappen, leaving him a distant seventh in the 2022 standings after four races. 

Hamilton's former Mercedes team-mate Nico Rosberg questioned team principal Toto Wolff's assertion that it was the car, rather than the driver, that had been the dominant factor in the British star struggling. 

Given Hamilton's team-mate George Russell finished a creditable fourth, Rosberg believes Wolff chose his words carefully in an effort to gee up his lead driver. 

Speaking to Sky Sports, Hamilton said it had been "a weekend to forget, that's for sure". 

When asked about title prospects and the possibility of fighting his way back into contention, Hamilton said: "I am out of the championship, for sure. There's no question about that. But I will still keep working as hard as I can and try and somehow pull it back together somehow." 

Rosberg raced for Mercedes from 2010 to 2016, pipping Hamilton to the title in his final year with the team before driving off into retirement. 

Wolff described the Mercedes as "undriveable" as he spoke to Hamilton over team radio at the end of Sunday's race in Italy, saying it was not fit for a world champion. 

But Rosberg, also speaking to Sky Sports, believes that was a case of clever politics from the Mercedes team chief. 

"Here, Toto was playing the mental game which is very smart on his behalf again, taking the blame themselves and really trying to support Lewis mentally. Lifting him up and saying that it wasn't Lewis' doing, it's on us," Rosberg said. 

"It's very smart because it's not quite the truth and let's not forget that Russell is in P4 with that same car, so Lewis definitely had a big role to play in that poor result this weekend." 

Rosberg believes there was "more in that car" than Hamilton has been able to find. 

He added: "It's so important that Lewis keeps that motivation through the whole season, it's important for the team and it's quite easy for Lewis to lose it in these kinds of situations."