For the BMW WilliamsF1 team the opening practice session for the 2005 Hungarian Grand Prix would see Nick Heidfeld in seventh and Mark Webber back in thirteenth. Both drivers would work through their normal Friday schedule preparing for the race on Sunday.

Friday's first practice session got under way with Jordan's Nicolas Kiesa is the first driver out onto the circuit, followed by the Minardi of Robert Doornbos. On the driver front Israeli Chanoch Nissany has joined the Minardi team as their third driver. The weather at the circuit has the air temperature at 33 degrees Celsius and the track at 43.

Toyota's Ricardo Zonta and Jordan's Tiago Monteiro would join the other pair completing their installation lap. They would be joined by McLaren's Alex Wurz, who would pit. Jordan's Narain Karthikeyan and Sauber's Jacques Villeneuve would also come out for their installation lap.

Zonta would be the first driver to set a time with a lap of 1m:28.512. None of the Renaults, Ferraris and WilliamsF1 cars had taken to the track. Nissany would set the next lap time with a 1m:36.966 to move into second. With nearly fifteen minutes of the session run Kiesa would be the third driver to set a time with a 1m:36.652. Wurz would follow the Dane in setting a time. Alex's lap would be a 1m:26.056 which would see him second behind Zonta.

Wurz would improve his time to go fastest with a 1m:25.032. Kiesa was now third with a lap time of 1m:30.325. Wurz again would lower his lap time, this time with a 1m:24.759. Zonta would come back out to respond to Alex's times. His lap would be a 1m:25.814 but this was 1.06 seconds off Alex's time. Red Bull's Liuzzi was now third with a 1m:27.122, on his first lap. Zonta would spin his cat at Turn one and would return to his pit.

Liuzzi would improve his time with a 1m:25.351, while Doornbos would set his first lap time with a 1m:29.096 to move into fourth. With nearly half the session complete the order was Wurz from Zonta, Liuzzi, Doornbos, Kiesa, and Nissany. Wurz and Sauber's Felipe Massa would come out onto the track. Alex would Wurz improve his time again with a 1m:24.029. While the Renault's of Alonso and Fisichella had completed their installation lap, neither the Ferraris, WilliamsF1, or race Toyotas had come out.

Zonta was back out and would improves his time with a 1m:24.438. Karthikeyan was sixth with a 1m:30.494. With twenty minutes left the first of the BMW WilliamsF1 drivers would come out and set a time with Nick Heidfeld moving into third with a 1m:25.490. Tiago Monteiro was now sixth with a 1m:30.487. The second FW27 of Mark Webber would come out and Mark's first lap would see him in fifth with a 1m:26.756.

Nissany's session would come to a stop when he put his car into the gravel in sector two seeing the yellow flags come out. Both of the BAR's were out and Jenson Button would move into second with a 1m:24.196. Michael Schumacher would come out and on his first lap would set a time of 1m:27.034 to be in sixth. Wurz would again lower his time with a 1m:23.360. Michael Schumacher would move into second with a 1m:23.775, but Button would snatch this spot from the Ferrari driver with a 1m:23.701. While this was going on Wurz would lower his time even further with a stunning 1m:22.118.

With ten minutes remaining the order was Wurz, Button, Michael Schumacher, Barrichello, Liuzzi, Zonta, Fisichella, Sato, Alonso, Heidfeld, Webber, Doornbos, Monteiro, Karthikeyan, Kiesa, Nissany. As the session wound down the yellow flags would come out again when Zonta went off the in the final sector at Turn 14. Both Raikkonen and Montoya were out and lapping quickly. Juan Pablo Montoya was now in second with a time of 1m:23.558. But team-mate Raikkonen would beat his time with a 1m:23.159 to move into second.

We had a McLaren 1-2-3 as the final minutes counted down. Just to top things off Wurz would put in another fastest lap time of 1m:21.411. In these closing minutes the Ferrari's of Barrichello and Michael Schumacher would move into second a fourth. With the chequered flag the order was Wurz followed by Barrichello, Button, Raikkonen, Michael Schumacher, Massa, Heidfeld, Montoya, Sato and Ralf Schumacher..