Jaguar R4

Despite the priority on testing, the new R4 was barely ready for the 2003 season, having covered comparatively few miles as a finished package. Reliability problems had caused delays, although engine suppliers Cosworth performed well by supplying the team with engines for the hybrid chassis and testing. At the Brazilian Grand Prix Webber crashed heavily, triggering an incident that led to the race being red flagged. Webber's commitment and determination was a boost to the team, recording several sixth- and seventh-place finishes en-route to a Constructors' Championship finish of sixth. Pizzonia lagged far behind, despite his experience and the car's performance as demonstrated by Webber's results. ==Pizzonia issues==

After the Spanish Grand Prix Antônio Pizzonia's seat was under threat and it was reported widely that Jaguar wanted to snap up experienced McLaren test driver Alexander Wurz. However this came to nothing, as McLaren wanted Wurz's experience in developing its new car and retained the Austrian as test driver. This left Jaguar in a tricky position, backtracking and apologising with Pizzônia remaining in the car until the British Grand Prix. Despite a lap 44 retirement due to gearbox issues, this was his most convincing drive of the season; however Jaguar replaced him with Justin Wilson from the Minardi team and thus for the first time in history Jaguar Racing fielded all-Minardi-alumni drivers. ==Livery==

The livery was similar to previous seasons with subtle changes. The bargeboard promoted an all-new XJ. In Monaco Grand Prix, Jaguar took the unique decision to re-colour its signature-leaping cat pink in celebration of the Steinmetz Flawless Diamond Collection and the presentation of the Steinmetz Pink - a 59.60 carat natural, pink diamond. At the British Grand Prix, both cars had the Terminator 3: Rise of the Machines livery on its air box. ==Complete Formula One results==