The Toro Rosso STR3 is a Formula One car which Scuderia Toro Rosso used in the second half of the 2008 Formula One season designed by Adrian Newey, the Red Bull Racing designer.

Sebastian Vettel, who (since joining Scuderia Toro Rosso) makes it a habit to give his racing cars names, named his STR3 'Julie'.^[1]

It was first tested by Red Bull junior driver, Brendon Hartley in Italy on 2 April and publicly launched on 16 April 2008 at the Circuit de Catalunya, where it was driven by Sébastien Bourdais.^[2]

Toro Rosso had started the 2008 season with an updated B specification version of their 2007 STR2 car, originally stating that the STR3 would make its début at the fourth or fifth round.

The car was first raced at the 6th round of the season, the Monaco Grand Prix, driven by Sébastien Bourdais and Sebastian Vettel.^[3] It was driven by Vettel to victory in the Italian Grand Prix, the team's only and Vettel's first victory.

The STR3 driven by Vettel made its debut in the 2022 BOSS GP Series, driven by Thomas Jackermeier, the CEO of German sim racing hardware company Fanatec.^[4] He scored two second place finishes in the F1 Class at the Red Bull Ring.

(key) (results in bold indicate pole position)

Year	Entrant	Engine	Tyres	Drivers	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	Points	WCC
2008	Scuderia Toro Rosso	Ferrari V8	B		AUS	MAL	BHR	ESP	TUR	MON	CAN	FRA	GBR	GER	HUN	EUR	BEL	ITA	SIN	JPN	CHN	BRA	39*	6th*
				Sébastien Bourdais						Ret	13	17	11	12	18	10	7	18	12	10	13	14
				Sebastian Vettel						5	8	12	Ret	8	Ret	6	5	1	5	6	9	4

* 37 points scored with the STR3.