had its third double DNF of the season, with both drivers suffering from a left rear tyre puncture caused by the valve caps not being refitted after the drivers' second pit stops. The PS05 also suffered from hydraulic problems, which caused retirements at the Canadian and Hungarian Grand Prix. A broken oil pipe took Doornbos out of the Brazilian Grand Prix, while Albers suffered a sensor failure that compromised the performance of the differential and traction control system, affecting his pace in Interlagos. Of the fifteen races the PS05 was used, it retired at eight races, failed to classify at one race and finished twelve races. In comparison to its immediate predecessor, the PS04B, which retired from fifteen races and finished eighteen races, the PS05 was more reliable and yet finished lower on average. The new Cosworth unit also proved to be much more reliable, as none of the team's retirements were due to engine issues. Sponsorship and livery The PS05 featured the same black and white colour scheme from the previous seasons, with OzJet as the primary sponsor. Results (key) Notes References Minardi Formula One cars 2005 Formula One season cars