McLaren MP4-21

McLaren MP4-21
Category	Formula One
Constructor	McLaren
Designer(s)	Adrian Newey (Technical Director); Paddy Lowe (Engineering Director); Tim Goss (Chief Engineer); Mike Coughlan (Chief Designer); Peter Prodromou (Head of Aerodynamics)
Predecessor	MP4-20
Successor	MP4-22
Technical specifications
Chassis	Moulded carbon fibre monocoque incorporating front and side impact structures
Suspension (front)	Inboard torsion bar/damper system operated by pushrod and bell crank with a double wishbone arrangement
Suspension (rear)	As front
Engine	Mercedes-Benz FO108S, 2.4 litre V8 naturally-aspirated mid-engined
Transmission	McLaren Applied Technologies 7-speed + 1 reverse sequential seamless-shift semi-automatic paddle-shift with epicyclic differential and multi-plate limited slip clutch
Power	740-750 hp @ 19,000 rpm[1]
Fuel	Mobil 1 unleaded
Tyres	Michelin
Competition history
Notable entrants	Team McLaren Mercedes
Notable drivers	3. Kimi Räikkönen; 4. Juan Pablo Montoya; 4. Pedro de la Rosa
Debut	2006 Bahrain Grand Prix
Teams' Championships	0
Constructors' Championships	0
Drivers' Championships	0

The McLaren MP4-21 is a Formula One car built for the 2006 Formula One season. The chassis was designed by Adrian Newey, Paddy Lowe, Tim Goss, Mike Coughlan and Peter Prodromou with Mario Illien designing the bespoke Mercedes-Benz engine. The car continues the MP4-X naming system and is notable for its striking chrome livery with red stripes designed to maximize the visibility of the team's new primary sponsor Emirates. The distinctive needle-nose design was previously used on the MP4-19 in 2004. The MP4-21 was the first McLaren car to be powered by purely Mercedes-Benz engines after 11 years partnership with Ilmor as an engine builder.

The car started the season in the hands of Kimi Räikkönen and Juan Pablo Montoya, but after a few races it soon became clear that it was not as competitive as its predecessor, the MP4-20, with an apparent improvement in reliability countered by an underpowered Mercedes engine. McLaren did not win a race all season, for the first time since 1996. Their best results were second-place finishes for Kimi Räikkönen in Australia and Italy, for Juan Pablo Montoya in Monaco, and for Pedro de la Rosa in Hungary.

Complete Formula One results

(key) (results in bold indicate pole position; results in italics indicate fastest lap)

Year	Team	Engine	Tyres	Drivers	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	Points	WCC
2006	McLaren	Mercedes-Benz V8	M		BHR	MAL	AUS	SMR	EUR	ESP	MON	GBR	CAN	USA	FRA	GER	HUN	TUR	ITA	CHN	JPN	BRA	110	3rd
				Kimi Räikkönen	3	Ret	2	5	4	5	Ret	3	3	Ret	5	3	Ret	Ret	2	Ret	5	5
				Juan Pablo Montoya	5	4	Ret	3	Ret	Ret	2	6	Ret	Ret
				Pedro de la Rosa											7	Ret	2	5	Ret	5	11	8

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