1955 Formula One season

Mercedes drivers again dominated the championship, with Fangio taking four races, and his new teammate Stirling Moss the British Grand Prix. Ferrari won at Monaco after all of the Mercedes cars broke down and Lancia driver Alberto Ascari crashed into the harbour. Although Ascari was apparently unscathed, the double World Champion crashed fatally at Monza while testing sportscars four days later.

The disaster at the 24 Hours of Le Mans on 11 June which killed Pierre Levegh and over 80 spectators led to the cancellations of the French, German, Spanish and Swiss Grands Prix.[2] The French round, which was supposed to be held at Reims between the Dutch and British rounds, on 3 July, was first rescheduled to 25 September[3] and subsequently cancelled. Then the German event, scheduled for 31 July at the Nürburgring, the Swiss round at Bremgarten, planned to take place on 21 August, and the Spanish round, on 23 October at Pedralbes, followed suit.[4] Pedralbes and Bremgarten were then abandoned and never used again for racing; motor racing was banned altogether in Switzerland and no motor-race was held in Switzerland until the 2018 Zürich ePrix. These cancellations effectively handed the Drivers' title to Fangio after he finished 2nd to Moss at the British Grand Prix; although he wasn't actually crowned champion until well after the British Grand Prix, because the German, Swiss and Spanish rounds were cancelled after the British Grand Prix took place.

1955 would be the final season for Mercedes Benz as a constructor until the team's revival in 2010. It would also mark the final win for Mercedes until the 2012 Chinese Grand Prix.

Aside from Ascari's death this year, Italian Mario Alborghetti died at the non-championship Pau Grand Prix in France driving a Maserati; and during the Indianapolis 500, two drivers were killed during the month-long event: Americans Manny Ayulo in practice and previous race winner Bill Vukovich during the race 2 weeks later.

Rnd	Race	Circuit	Date	Pole position	Fastest lap	Winning driver	Constructor	Tyre	Report
1	Argentine Grand Prix	Buenos Aires	16 January	José Froilán González	Juan Manuel Fangio	Juan Manuel Fangio	Mercedes	C	Report
2	Monaco Grand Prix	Monaco	22 May	Juan Manuel Fangio	Juan Manuel Fangio	Maurice Trintignant	Ferrari	E	Report
3	Indianapolis 500A	Indianapolis	30 May	Jerry Hoyt	Bill Vukovich	Bob Sweikert	Kurtis Kraft-Offenhauser	F	Report
4	Belgian Grand Prix	Spa-Francorchamps	5 June	Eugenio Castellotti	Juan Manuel Fangio	Juan Manuel Fangio	Mercedes	C	Report
5	Dutch Grand Prix	Zandvoort	19 June	Juan Manuel Fangio	Roberto Mieres	Juan Manuel Fangio	Mercedes	C	Report
6	British Grand Prix	Aintree	16 July	Stirling Moss	Stirling Moss	Stirling Moss	Mercedes	C	Report
7	Italian Grand Prix	Monza	11 September	Juan Manuel Fangio	Stirling Moss	Juan Manuel Fangio	Mercedes	C	Report

^A The Indianapolis 500 was AAA-sanctioned and not run to Formula One regulations. It also counted towards the 1955 AAA Championship.

The following teams and drivers competed in the 1955 FIA World Championship.

Entrant	Constructor	Chassis	Engine	Tyre	Driver	Rounds
Daimler Benz AG	Mercedes	W196	Mercedes M196 2.5 L8	C	Juan Manuel Fangio	1–2, 4–7
					Karl Kling	1, 4–7
					Stirling Moss	1–2, 4–7
					Hans Herrmann	1–2
					André Simon	2
					Piero Taruffi	6–7
Scuderia Ferrari	Ferrari Lancia	625 555 D50	Ferrari 555 2.5 L4 Lancia DS50 2.5 V8	E	Giuseppe Farina	1–2, 4, 7
					Umberto Maglioli	1, 7
					José Froilán González	1
					Maurice Trintignant	1–2, 4–7
					Harry Schell	2, 4
					Piero Taruffi	2, 4
					Paul Frère	2, 4
					Mike Hawthorn	5–7
					Eugenio Castellotti	5–7
					Luigi Villoresi	7
Officine Alfieri Maserati	Maserati	250F	Maserati 250F1 2.5 L6	P	Jean Behra	1–2, 4–7
					Roberto Mieres	1–2, 4–7
					Sergio Mantovani	1
					Luigi Musso	1–2, 4–7
					Carlos Menditeguy	1, 7
					Clemar Bucci	1
					Harry Schell	1
					Cesare Perdisa	2, 4
					André Simon	6
					Peter Collins	7
					Horace Gould	7
Alberto Uria	Maserati	A6GCM	Maserati 250F1 2.5 L6	P	Alberto Uria	1
Scuderia Lancia	Lancia	D50	Lancia DS50 2.5 V8	P	Alberto Ascari	1–2
					Luigi Villoresi	1–2
					Eugenio Castellotti	1–2, 4
					Louis Chiron	2
Equipe Gordini	Gordini	T16	Gordini 23 2.5 L6	E	Élie Bayol	1–2
					Pablo Birger	1
					Jesús Iglesias	1
					Robert Manzon	2, 5–6
					Jacques Pollet	2, 5, 7
					Hermano da Silva Ramos	5–7
					Mike Sparken	6
					Jean Lucas	7
Ecurie Rosier	Maserati	250F	Maserati 250F1 2.5 L6	P	Louis Rosier	2, 4–5
Vandervell Products	Vanwall	VW 55	Vanwall 254 2.5 L4	P	Mike Hawthorn	2, 4
					Ken Wharton	6–7
					Harry Schell	6–7
Stirling Moss Ltd	Maserati	250F	Maserati 250F1 2.5 L6	D	Lance Macklin	2, 6
					Johnny Claes	4
					Peter Walker	5
					John Fitch	7
E.N. Whiteaway	HWM-Alta	53	Alta GP 2.5 L4	D	Ted Whiteaway	2
Equipe Nationale Belge	Ferrari	625	Ferrari 625 2.5 L4	E	Johnny Claes	5
Gould's Garage (Bristol)	Maserati	250F	Maserati 250F1 2.5 L6	D	Horace Gould	5–6
Connaught Engineering	Connaught-Alta	B	Alta GP 2.5 L4	D	Kenneth McAlpine	6
					Jack Fairman	6
R.R.C. Walker Racing Team	Connaught-Alta	B	Alta GP 2.5 L4	D	Tony Rolt	6
					Peter Walker	6
Leslie Marr	Connaught-Alta	B	Alta GP 2.5 L4	D	Leslie Marr	6
Cooper Car Company	Cooper-Bristol	T40	Bristol BS1 2.0 L6	D	Jack Brabham	6
Owen Racing Organisation	Maserati	250F	Maserati 250F1 2.5 L6	D	Peter Collins	6
Gilby Engineering	Maserati	250F	Maserati 250F1 2.5 L6	D	Roy Salvadori	6
Scuderia Volpini	Arzani-Volpini-Maserati	F1	Maserati 4CLT 2.5 L4	P	Luigi Piotti	7

Championship points were awarded on an 8–6–4–3–2 basis for the first five places at each race. One point was awarded for fastest race lap at each race. Only the best 5 results counted towards the Championship. Numbers without parentheses are Championship points; numbers in parentheses are total points scored.

Pos. Driver ARG MON 500 BEL NED GBR ITA Pts. 1 Juan Manuel Fangio 1 (Ret) 1 1 2 1 40 (41) 2 Stirling Moss 4† / Ret 9 2 2 1 Ret 23 3 Eugenio Castellotti Ret† 2 Ret 5 6† / Ret 3 12 4 Maurice Trintignant 2† / 3† / Ret 1 6 Ret Ret 8 11 ​1⁄3 5 Nino Farina 2† / 3† 4 3 DNS 10 ​1⁄3 6 Piero Taruffi 8† DNS 4 2 9 7 Bob Sweikert 1 8 8 Roberto Mieres 5 Ret 5† 4 Ret 7 7 9 Jean Behra 6† / Ret† / Ret 3† / Ret† 5† / Ret 6 Ret 4 6 10 Luigi Musso 7† / Ret† Ret 7 3 5 Ret 6 11 Karl Kling 4† / Ret Ret Ret 3 Ret 5 12 Jimmy Davies 3 4 13 Tony Bettenhausen 2† 3 14 Paul Russo 2† 3 15 Paul Frère 8† 4 3 16 Johnny Thomson 4 3 17 José Froilán González 2† 2 18 Cesare Perdisa 3† / Ret† 8 2 19 Luigi Villoresi Ret† / Ret 5 DNS 2 20 Carlos Menditeguy Ret† / Ret 5 2 21 Umberto Maglioli 3† 6 1 ​1⁄3 22 Hans Herrmann 4† DNQ 1 23 Walt Faulkner 5† 1 24 Bill Homeier 5† 1 25 Bill Vukovich Ret 1 — Mike Hawthorn Ret Ret 7 6† 10 0 — Harry Schell 6† / 7† / Ret† Ret DNS 9† / Ret Ret 0 — Louis Chiron 6 0 — Andy Linden 6 0 — Jacques Pollet 7 10 Ret 0 — Al Herman 7 0 — Mike Sparken 7 0 — Sergio Mantovani 7† / Ret† 0 — Hermano da Silva Ramos 8 Ret Ret 0 — Lance Macklin DNQ 8 0 — Pat O'Connor 8 0 — Louis Rosier Ret 9 9 0 — Ken Wharton 9† Ret 0 — Jimmy Daywalt 9 0 — John Fitch 9 0 — Pat Flaherty 10 0 — Duane Carter 11 0 — Johnny Claes DNS 11 0 — Chuck Weyant 12 0 — Eddie Johnson 13 0 — Jim Rathmann 14 0 — Robert Manzon Ret Ret Ret 0 — Horace Gould Ret Ret Ret 0 — Alberto Ascari Ret Ret 0 — Élie Bayol Ret Ret 0 — André Simon Ret Ret 0 — Peter Collins Ret Ret 0 — Peter Walker Ret Ret† 0 — Jesus Iglesias Ret 0 — Pablo Birger Ret 0 — Alberto Uria Ret 0 — Don Freeland Ret 0 — Cal Niday Ret 0 — Art Cross Ret 0 — Shorty Templeman Ret 0 — Sam Hanks Ret 0 — Keith Andrews Ret 0 — Johnnie Parsons Ret 0 — Eddie Russo Ret 0 — Ray Crawford Ret 0 — Jimmy Bryan Ret 0 — Jack McGrath Ret 0 — Al Keller Ret 0 — Johnny Boyd Ret 0 — Ed Elisian Ret 0 — Rodger Ward Ret 0 — Jerry Hoyt Ret 0 — Jimmy Reece Ret 0 — Fred Agabashian Ret 0 — Kenneth McAlpine Ret 0 — Jack Brabham Ret 0 — Roy Salvadori Ret 0 — Leslie Marr Ret 0 — Jean Lucas Ret 0 — Clemar Bucci Ret† 0 — Tony Rolt Ret† 0 — Ted Whiteaway DNQ 0 — Jack Fairman DNS 0 — Luigi Piotti DNS 0 Pos. Driver ARG MON 500 BEL NED GBR ITA Pts.

Key Colour Result Gold Winner Silver 2nd place Bronze 3rd place Green Other points position Blue Other classified position Not classified, finished (NC) Purple Not classified, retired (Ret) Red Did not qualify (DNQ) Did not pre-qualify (DNPQ) Black Disqualified (DSQ) White Did not start (DNS) Race cancelled (C) Blank Did not practice (DNP) Excluded (EX) Did not arrive (DNA) Withdrawn (WD) Did not enter (cell empty) Text formatting Meaning Bold Pole position Italics Fastest lap

• Italics indicate fastest lap (1 point awarded – point shared equally between drivers sharing fastest lap)
• Bold indicates pole position
• † = Car driven by more than one driver

Other Formula One races also held in 1955, which did not count towards the World Championship.

Race name	Circuit	Date	Winning driver	Constructor	Report
VII Gran Premio del Valentino	Valentino Park	27 March	Alberto Ascari	Lancia	Report
XVI Pau Grand Prix	Pau	11 April	Jean Behra	Maserati	Report
III Glover Trophy	Goodwood	11 April	Roy Salvadori	Maserati	Report
IV Grand Prix de Bordeaux	Bordeaux	25 April	Jean Behra	Maserati	Report
VII BRDC International Trophy	Silverstone	7 May	Peter Collins	Maserati	Report
VIII Gran Premio di Napoli	Posillipo	8 May	Alberto Ascari	Lancia	Report
XVII Grand Prix d'Albi	Albi	29 May	André Simon	Maserati	Report
III Curtis Trophy	Snetterton	29 May	Roy Salvadori	Maserati	Report
III Cornwall MRC Formula 1 Race	Davidstow	30 May	Leslie Marr	Connaught-Alta	Report
III London Trophy	Crystal Palace	30 July	Mike Hawthorn	Maserati	Report
III Daily Record Trophy	Charterhall	6 August	Bob Gerard	Maserati	Report
III RedeX Trophy	Snetterton	13 August	Harry Schell	Vanwall	Report
II Daily Telegraph Trophy	Aintree	3 September	Roy Salvadori	Maserati	Report
II International Gold Cup	Oulton Park	24 September	Stirling Moss	Maserati	Report
I Avon Trophy	Castle Combe	1 October	Harry Schell	Vanwall	Report
V Gran Premio di Siracusa	Syracuse	23 October	Tony Brooks	Connaught-Alta	Report