1984 Portuguese Grand Prix
Race 16 of 16 in the 1984 Formula One World Championship
Race details
Date	21 October 1984
Official name	13º Grande Prémio de Portugal
Location	Autódromo do Estoril, Estoril, Portugal
Course	Permanent racing facility
Course length	4.35 km (2.702 miles)
Distance	70 laps, 304.5 km (189.14 miles)
Weather	Dry
Pole position
Driver	Nelson Piquet	Brabham-BMW
Time	1:21.703
Fastest lap
Driver	Niki Lauda	McLaren-TAG
Time	1:22.996 on lap 51
Podium
First	Alain Prost	McLaren-TAG
Second	Niki Lauda	McLaren-TAG
Third	Ayrton Senna	Toleman-Hart
Lap leaders

The 1984 Portuguese Grand Prix was a Formula One motor race held at Estoril on 21 October 1984. It was the sixteenth and final race of the 1984 FIA Formula One World Championship. It was the first World Championship Portuguese Grand Prix since 1960, when it was held at the Boavista street circuit in Oporto.

Niki Lauda needed second place to secure the title, and gained it when Nigel Mansell spun out with 18 laps to go. As a result, he took the title by just half a point from team-mate Alain Prost. The point-scoring drivers won a total of 13 world championships between them, and the three drivers on the podium were all (at least) triple World Champions from different eras – Lauda, approaching the end of his long and distinguished F1 career, Prost, enjoying the best years of his career, and Ayrton Senna, still at the dawn of his.

After running a strong second behind Prost for most of the race, Mansell's spin on lap 52 was due to his front left brake failing. The Englishman later told that as it was his last race for Lotus before joining Williams in 1985, team boss Peter Warr (whom he had never got along with personally) had refused to give him the brakes he wanted for his Lotus 95T and that it was this that ultimately caused his retirement and handed Lauda the second place he needed to win the World Championship.

The race also represented the last win for French tyre manufacturer Michelin in Formula One until the 2001 San Marino Grand Prix.

Pos	No	Driver	Constructor	Q1	Q2	Gap
1	1	Nelson Piquet	Brabham-BMW	1:30.889	1:21.703	—
2	7	Alain Prost	McLaren-TAG	1:28.276	1:21.774	+0.071
3	19	Ayrton Senna	Toleman-Hart	1:30.077	1:21.936	+0.233
4	6	Keke Rosberg	Williams-Honda	1:32.269	1:22.049	+0.346
5	11	Elio de Angelis	Lotus-Renault	1:28.428	1:22.291	+0.588
6	12	Nigel Mansell	Lotus-Renault	1:32.986	1:22.319	+0.616
7	15	Patrick Tambay	Renault	1:29.409	1:22.583	+0.880
8	27	Michele Alboreto	Ferrari	1:31.192	1:22.686	+0.983
9	16	Derek Warwick	Renault	1:35.913	1:22.801	+1.098
10	20	Stefan Johansson	Toleman-Hart	1:28.991	1:22.942	+1.239
11	8	Niki Lauda	McLaren-TAG	1:28.837	1:23.183	+1.480
12	22	Riccardo Patrese	Alfa Romeo	1:37.154	1:24.048	+2.345
13	33	Philippe Streiff	Renault	1:37.280	1:24.089	+2.386
14	23	Eddie Cheever	Alfa Romeo	1:34.809	1:24.235	+2.532
15	5	Jacques Laffite	Williams-Honda	1:39.696	1:24.437	+2.734
16	17	Marc Surer	Arrows-BMW	1:34.003	1:24.688	+2.985
17	28	René Arnoux	Ferrari	1:36.634	1:24.848	+3.145
18	18	Thierry Boutsen	Arrows-BMW	1:32.530	1:25.115	+3.412
19	2	Manfred Winkelhock	Brabham-BMW	no time	1:25.289	+3.586
20	26	Andrea de Cesaris	Ligier-Renault	1:33.398	1:26.082	+4.379
21	25	François Hesnault	Ligier-Renault	1:34.233	1:26.701	+4.998
22	24	Piercarlo Ghinzani	Osella-Alfa Romeo	1:31.336	1:26.840	+5.137
23	14	Gerhard Berger	ATS-BMW	1:44.966	1:28.106	+6.403
24	30	Jo Gartner	Osella-Alfa Romeo	1:33.540	1:28.229	+6.526
25	21	Mauro Baldi	Spirit-Hart	1:36.483	1:29.001	+7.298
26	10	Jonathan Palmer	RAM-Hart	1:40.344	1:29.397	+7.694
27	9	Philippe Alliot	RAM-Hart	1:34.839	1:30.406	+8.703
Source:[1][2][3]

Pos	No	Driver	Constructor	Tyre	Laps	Time/Retired	Grid	Points
1	7	Alain Prost	McLaren-TAG	M	70	1:41:11.753	2	9
2	8	Niki Lauda	McLaren-TAG	M	70	+ 13.425	11	6
3	19	Ayrton Senna	Toleman-Hart	M	70	+ 20.042	3	4
4	27	Michele Alboreto	Ferrari	G	70	+ 20.317	8	3
5	11	Elio de Angelis	Lotus-Renault	G	70	+ 1:32.169	5	2
6	1	Nelson Piquet	Brabham-BMW	M	69	+ 1 Lap	1	1
7	15	Patrick Tambay	Renault	M	69	+ 1 Lap	7
8	22	Riccardo Patrese	Alfa Romeo	G	69	+ 1 Lap	12
9	28	René Arnoux	Ferrari	G	69	+ 1 Lap	17
10	2	Manfred Winkelhock	Brabham-BMW	M	69	+ 1 Lap	19
11	20	Stefan Johansson	Toleman-Hart	M	69	+ 1 Lap	10
12	26	Andrea de Cesaris	Ligier-Renault	M	69	+ 1 Lap	20
13	14	Gerhard Berger	ATS-BMW	P	68	+ 2 Laps	23
14	5	Jacques Laffite	Williams-Honda	G	67	+ 3 Laps	15
15	21	Mauro Baldi	Spirit-Hart	P	66	+ 4 Laps	25
16	30	Jo Gartner	Osella-Alfa Romeo	P	65	Out of Fuel	24
17	23	Eddie Cheever	Alfa Romeo	G	64	+ 6 Laps	14
Ret	24	Piercarlo Ghinzani	Osella-Alfa Romeo	P	60	Engine	22
Ret	12	Nigel Mansell	Lotus-Renault	G	52	Brakes	6
Ret	16	Derek Warwick	Renault	M	51	Gearbox	9
Ret	33	Philippe Streiff	Renault	M	48	Transmission	13
Ret	6	Keke Rosberg	Williams-Honda	G	39	Engine	4
Ret	25	François Hesnault	Ligier-Renault	M	31	Electrical	21
Ret	18	Thierry Boutsen	Arrows-BMW	G	24	Transmission	18
Ret	10	Jonathan Palmer	RAM-Hart	P	19	Gearbox	26
Ret	17	Marc Surer	Arrows-BMW	G	8	Electrical	16
Ret	9	Philippe Alliot	RAM-Hart	P	2	Engine	27
Source:[4][5]

Drivers' Championship standings Pos Driver Points 1 Niki Lauda 72 2 Alain Prost 71.5 3 Elio de Angelis 34 4 Michele Alboreto 30.5 5 Nelson Piquet 29 Source:[6]

Constructors' Championship standings Pos Constructor Points 1 McLaren-TAG 143.5 2 Ferrari 57.5 3 Lotus-Renault 47 4 Brabham-BMW 38 5 Renault 34 Source:[6]

• Note: Only the top five positions are included for both sets of standings.