 Antônio Pizzonia driving the R4 at the 2003 British Grand Prix; his last race for Jaguar. Note the Terminator 3: Rise of the Machines promotion on the engine cover. | |||||||||
| Category | Formula One | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Constructor | Jaguar | ||||||||
| Designer(s) | David Pitchforth (Technical Director) Rob Taylor (Chief Designer) Ben Agathangelou (Head of Aerodynamics) | ||||||||
| Predecessor | Jaguar R3 | ||||||||
| Successor | Jaguar R5 | ||||||||
| Technical specifications | |||||||||
| Chassis | Carbon-fibre monocoque | ||||||||
| Suspension (front) | double wishbones, pushrods, torsion bars | ||||||||
| Suspension (rear) | double wishbones, pushrods, torsion bars | ||||||||
| Engine | Cosworth CR-5 3.0-litre V10 naturally aspirated 90-degree | ||||||||
| Transmission | Jaguar 7-speed magnesium-cased longitudinal semi-automatic | ||||||||
| Power | 900 hp @ 19,000 rpm[1] | ||||||||
| Fuel | BP | ||||||||
| Lubricants | Castrol | ||||||||
| Tyres | Michelin | ||||||||
| Competition history | |||||||||
| Notable entrants | Jaguar Racing | ||||||||
| Notable drivers | 14.  Mark Webber15.  Antônio Pizzonia15.  Justin Wilson | ||||||||
| Debut | 2003 Australian Grand Prix | ||||||||
| Last event | 2003 Japanese Grand Prix | ||||||||
| |||||||||
| Constructors' Championships | 0 | ||||||||
| Drivers' Championships | 0 | ||||||||
The Jaguar R4 is a Formula One car with which Jaguar Racing competed in the 2003 Formula One season. It was driven by Mark Webber, Antônio Pizzonia and Justin Wilson.
After three years in Formula One, and amid a turbulent atmosphere that had claimed the leaderships of Niki Lauda and Bobby Rahal, Jaguar Racing became much more stable in 2003. Now led by Tony Purnell and David Pitchforth, results – previously elusive – were a priority. At the end of 2002 Eddie Irvine was out of contract and retired from Formula One, and Pedro de la Rosa was negotiated out of his standing contract. New drivers Mark Webber and Antônio Pizzonia were drafted into the team and the entirety of the management team was re-structured.
The car was also revamped, with the R4 representing a fresh approach compared to the previous season's R3. Its designers focused on producing a much stiffer chassis, and aimed to root out problems during the pre-season with a concerted programme of on-track testing and factory work.