The Williams FW13 was a Formula One racing car used by the Williams team for the last four races of the 1989 Formula One season and, when updated as the FW13B, for the whole of the season. 1989 The FW13 was designed by Argentine Enrique Scalabroni and featured a distinctive oval-shaped air intake, as well as the Renault RS1 3.5-litre V10 engine, Renault's first non-turbo Formula One engine which was rated at approximately . The car was driven by Belgian Thierry Boutsen and Italian Riccardo Patrese. It made its racing début late in the 1989 season - at the Portuguese Grand Prix - due to the team's wish to get any bugs out in testing beforehand which forced the team to use an updated version of their car dubbed the FW12C for the first 12 races of the season, by which time the FW12C had reached its development peak and both Patrese and Boutsen were eagerly awaiting the FW13. Both the drivers and the team agreed the new car was needed to challenge the likes of McLaren with their V10 Honda engines, Ferrari with their V12 engine and innovative Semi-automatic transmission, and the leading V8 powered cars, the Benetton-Fords. After teething problems saw the Williams pair out of contention in Portugal, Patrese reverted to the old car in Spain while Boutsen continued with the new car. With the bugs finally ironed out, the new car proved very competitive in the final two races of the year, as Patrese and Boutsen finished second and third respectively at Suzuka (though helped by the infamous McLaren collision at the chicane which took out Alain Prost and later saw Ayrton Senna disqualified). The Belgian then won the final race of the year in Australia after a brilliant drive in very wet conditions, with Patrese third. These results enabled Williams to leapfrog Ferrari into second in the Constructors' Championship while Patrese had his best ever year by finishing third in the Driver' Championship behind the McLarens. BBC television commentator Murray Walker reported during the Australian GP that the FW13, like its predecessor, was originally designed to use the computer-controlled active suspension rather than the conventional suspension used on most cars at the time. However, after the problems encountered in the first half of with the FW12, Williams decided more work was needed on getting the active suspension to work better with the naturally aspirated engines