Stewards said the sixth new turbocharger exceeded the driver's permitted allocation, triggering the automatic drop.
Hamilton will equal Ferrari great Michael Schumacher's all-time win record if he takes his seventh win of the season on Sunday.
Formula One supremo Bernie Ecclestone has thrown doubt on this year's German Grand Prix taking place at either Nuerburgring or Hockenheim.
Briton's Lewis Hamilton won the Malaysian Grand Prix with a pole-to-flag victory ahead of Nico Rosberg on Sunday in a first Mercedes one-two since they returned to Formula One as a works team in 2010.
Charles Leclerc overcame a late throttle scare to win the Austrian Grand Prix for Ferrari on Sunday and become Formula One championship leader Max Verstappen's closest rival.
Formula One supremo Bernie Ecclestone has backed a clampdown on the use of team radio to help drivers, claiming it was his idea and suggesting more restrictions should be considered.
Lewis Hamilton celebrated his 50th Formula One victory on Sunday with a pole-to-flag U.S. Grand Prix drive that kept his title hopes alive and trimmed Mercedes team mate Nico Rosberg's lead to 26 points with three races remaining. Rosberg, who had been chasing his 10th triumph of the season, finished second on a sunny Texan afternoon with a big crowd but little drama -- even if Hamilton spent much of it worrying about reliability. The straightforward victory was Hamilton's fourth in Texas in five seasons and ended a barren stretch for the triple world champion dating back to his last win in Germany in July.
Sahara Force India had a disappointing outing as Adrian Sutil managed 14th while team mate Paul di Resta was two places below at 16th in qualifying for the Italian Grand Prix in Monza, on Sunday.
Sebastian Vettel handed Ferrari their first Canadian Grand Prix pole position since Michael Schumacher in 2001 on Saturday while Formula One championship leader Lewis Hamilton qualified fourth for Mercedes. Vettel, 14 points behind the Briton, will start from the front for the fourth time at the Circuit Gilles Villeneuve after setting a track record of one minute 10.764 seconds on a sunny afternoon.
Formula One World champion Sebastian Vettel led a Red Bull one-two when he won the Malaysian Grand Prix ahead of team mate Mark Webber on Sunday.
Images from the Monaco F1 GP on Sunday.
Speaking at last weekend's title deciding US Grand Prix in Austin, the 84-year-old Briton told reporters he hoped to add more American venues to a series that is already set for a record 21 races next year.
Lewis Hamilton's hopes of a second successive pole position disappeared on Saturday when he was handed a five-place penalty on the Bahrain Grand Prix starting grid for an unscheduled gearbox change.
Hamilton, eight points behind Vettel after 10 races, qualified 14th.
Singer Nicole Scherzinger who is currently dating Mercedes' Lewis Hamilton, is all geared for the Formula One championship.
The McLaren Racing team has withdrawn from this weekend's season-opening Australian Grand Prix after a team member tested positive for coronavirus, the team said on Thursday. The positive test at McLaren follows four crew members of fellow Formula One team Haas being quarantined due to the outbreak.
Rediff.com brings you some pictures that summarise the happenings in the sporting world in the week that was.
Michael Schumacher rolled back the years in electrifying fashion to qualify fastest for the Monaco Formula One Grand Prix on Saturday, only to be deprived of a sensational pole position by a five place grid penalty.
Ferrari's Charles Leclerc claimed his second win of the Formula One season
Stewards were investigating whether the Mercedes driver, who won from 14th on the grid, illegally crossed a line separating the entry from the track when he hurriedly changed his mind about pitting during a safety car period.
Lewis Hamilton joined the elite group of triple Formula One world champions on Sunday after winning a thrilling U.S. Grand Prix that kept the crowd on tenterhooks right to the very end.
Triple Formula One world champion Lewis Hamilton smashed the Bahrain circuit lap record on Saturday to take pole position ahead of Mercedes team mate Nico Rosberg for Sunday's grand prix. The Briton's best lap of one minute 29.493 seconds was the fastest ever at the Sakhir track. Ferrari's Sebastian Vettel and Kimi Raikkonen qualified third and fourth for the second race of the season.
Formula One drivers have backed proposals to introduce a 'virtual safety car' or automatic speed limiter that would force the entire field to slow when yellow warning flags are waved.
Mercedes driver Lewis Hamilton was observed enjoying a ride in a 600 mph Red Arrows Hawk jet, sailing over Lincolnshire, ahead of Sunday's British Grand Prix.
Formula One world champion Sebastian Vettel seized his fourth pole position in a row for Red Bull at the Chinese Grand Prix on Saturday.
Honda will return to Formula One in 2015 as McLaren engine partners, replacing Mercedes, sources close to the company said on Wednesday.
Team by team prospects for the Formula One season starting in Bahrain on March 14.
Germany's Nico Rosberg won the showcase Monaco Grand Prix for the second year in a row on Sunday to snatch back the Formula One world championship lead from Mercedes team mate Lewis Hamilton.
Nico Hulkenberg ended his partnership with Sahara Force India on a high as he secured 10 points for the side at the season-closing Brazilian Grand Prix with a fifth place finish, in Sao Paulo on Sunday.
Nico Rosberg swept to his fifth successive pole position on Saturday with Mercedes team mate and triple Formula One world champion Lewis Hamilton qualifying alongside on the Brazilian Grand Prix front row.
Monaco authorities have agreed to close the Grand Prix circuit to all traffic and pedestrians from 0645 to 0900.
McLaren Mercedes might not have the best of the free practice sessions on Friday, but its drivers -- Lewis Hamilton and Jenson Button -- have already set their sights on tomorrow and said a good qualifying race will be key to the team's success in Sunday's race.
Both the Sahara Force drivers missed out on Q3 in the qualifying for the Chinese Grand Prix as Paul di Resta will begin the race from 11th place while Adrian Sutil from 13th, in Shanghai.
Nico Rosberg will start his home German Grand Prix on Sunday from pole position after setting the fastest time in qualifying on Saturday.
Lewis Hamilton's lap of one minute 25.892 seconds is a track record at the Silverstone circuit.
Sahara Force India witnessed a good outing on Friday during the practice sessions for Sunday's Chinese Grand Prix as both their drivers recorded a top-10 timing with Paul di Resta lapping the eighth fastest time while Nico Hulkenberg was the ninth quickest, in Shanghai.
Team by team prospects for the 2016 Formula One season.
The Briton's Finnish team mate Valtteri Bottas will line up alongside on the front row of the starting grid with Ferrari's Kimi Raikkonen and Sebastian Vettel behind them.
'We have finalised the investigation into Sebastian Vettel's tyre at Spa. Detailed conclusions from the technical analysis will be presented at Monza'
Toro Rosso's Carlos Sainz fears he and some other Formula One drivers have had to lose so much weight before the season starts, to compensate for heavier cars, that they risk compromising their health.
