The track been declared wet for the opening Friday practice for the 2010 German Grand Prix. There would be the normal installation laps and with the track very wet the full wet weather tyre was the only option. It would take until around the twenty minute mark before a time was set with Alguersuari setting the first time with a 1m:41.068. Vettel was second with a 1m:36.905 and Alguersuari would improve with a 1m:35.656 but Vettel would move ahead with a 1m:34.796. As he continued his run Vettel would improve with a 1m:34.632. More drivers would start to come out including Webber, Massa, Buemi, Kobayashi, and Nico.

After further times it would be Alguersuari who moved to the front of the field with a time of 1m:32.932 while Vettel was now in second place. Nico would posts a 1m:34.055 on his first effort moving into second but as other times were set Massa would go fastest with a 1m:31.981 from Alguersuari, Rosberg, Webber, Vettel, Kobayashi, Nico, Buemi, De la Rosa, and Fauzy. Fauzy had replaced Kovalainen at Lotus for this session. Webber would move to the top of the times with a 1m:31.019. Vettel had pitted while for Williams Rubens was still in his pit. Webber would pit while Kobayashi had moved into fourth, 1m:32.172.

Nico had dropped to ninth with a time of 1m:34.000 while Rubens was now out on the track. Fauzy would have a moment coming out of Turn 3, running well off the circuit onto the grass. Rosberg was now fastest with a 1m:30.864 from Massa and Sutil who had moved up to third. Nico would improve with a 1m:31.365 to now be in fifth. On his next lap he would improve to be second with a 1m:30.866, just 0.002 behind Rosberg. Rubens was down in thirteenth, 1m:35.236. Alguersuari would comment that he felt the track was drying out quite rapidly. Rubens would run wide at the hairpin while he was locking his left front tyre. Massa would complete a 360 degree spin at Turn three but was able to keep his car on the track. Nico would pit while Rubens was on an improved lap moving up to sixth, 1m:31.698. Kubica would take to the gravel at the hairpin, followed by Massa while Nico had a big spin at Turn three but was able to keep his car on the track and continued.

Hamilton was on his first run for the session, while Nico had returned to the track. Alonso was up to fourth, 1m:30.914. Nico was on the intermediate tyres while Rubens had dropped to eighth. With forty four minutes remaining the order was Rosberg from Nico, Massa, Alonso, Rubens, Sutil, Webber, Buemi, De la Rosa, and Alguersuari in tenth. Rubens's new time was a 1m:30.942. Alonso would put his Ferrari to the top of the times with a 1m:30.229 while Vettel was now second, 1m:30.294. Rubens was now in third with a 1m:30.501. Schumacher had been off the track at Turn 8 but was able to use the extra asphalt run-off area to continue, being thirteenth at the moment. Rosberg was now fourth and Nico fifth. Rosberg was on an improved lap moving to the top of the times with a 1m:29.419.

Alonso, Vettel, and Rubens had all pitted with Vettel pitting after running wide at Turn two. Even though he was in fifth he was 1.447 behind Rosberg. With the track conditions improving Nico went fastest in sector one while we had yet to see a time from Hamilton. Alguersuari was now up to fourth, 1m:30.456, while Nico's time in his lap would see him fail to improve. With thirty six minutes remaining Rubens and Nico were in fifth and sixth. More drivers were coming back out trying the intermediate tyres. On his next lap Nico would find the extra time moving up to second, 1m:30.168. Nico would again find more time moving to the top of the times with a 1m:29.206. Webber was on a quicker lap setting the quickest time with a 1m:29.048 to be 0.158 ahead of Nico. Rubens was now in seventh while Nico would join him in the pits.

The conditions were improving considerably with the intermediate tyre coming into its own. Parts of the track were showing a dry line while others were still wet, in particular near the Mercedes stadium. Alguersuari was now third and would pit while Vettel was now fastest with a 1m:28.735. Vettel would pit while it would be Sutil's turn at the front going fastest with a 1m:28.411. Both McLaren's were back out on the track joined by Nico. With twenty five minutes left in the session the track was again very busy with Rubens also out on the track. Hamilton was able to set a 1m:31.699 to be in fifteenth one place behind Button. Hamilton would improve to be seventh with a 1m:29.429. Nico would set a 1m:29.206 while Massa would go off coming into the stadium section. He would run across the gravel but was able to continue.

Buemi was now in second while for Hamilton it would go wrong as he crashed his car at Turn three. Nico was now up to third, 1m:28.193, while Petrov was up to fourth. Hamilton would spin off taking to the grass and into the tyre barrier with the front of his car. His car would spin around also damaging the rear of the McLaren. De la Rosa was up to fourth, 1m:28.486, with Petrov now fifth from Vettel, Massa, Webber, Alguersuari, and Rosberg in tenth. Rubens was now in fifteenth. Hamilton's car would be craned away while he walked away. Kubica was now up to ninth, 1m:29.224, while Massa would again spin on the corner coming onto the start-finish straight. He would continue to move up to third, 1m:28.121. Buemi was out on another run currently in second with a 1m:28.114. Senna would spin at the same final corner as Massa. Senna was out of the car ending his session.

Rosberg was back out on the intermediate tyres and was able to go fastest with a 1m:27.448. Team- mate Schumacher was way down twentieth. Rubens again out on the track with six minutes remaining. Massa had moved ahead of Rosberg with a 1m:26.850 while Rubens was on a quicker lap seeing him up to fifth, 1m:27.946, while Sutil was able to go fastest with a 1m:26.314, to be 0.6536 ahead of Massa. Vettel was also on a quick lap looking to move up from tenth. Rubens' next alp was a 1m:26.947 to be third from Petrov, Rosberg, Buemi, and Nico. Vettel would not complete his lap returning to his pit. Button would put in a big improvement to go into third, 1m:26.936. Rubens was now in fourth. With the end of the session the order was Sutil from Massa, Button, Rubens, Petrov, Rosberg, Buemi, Nico, Liuzzi, and De la Rosa in tenth. Vettel and Webber were in eleventh and fourteenth.

For the AT&T Williams team it was a positive start to the weekend with both drivers remaining in the top ten for the majority of the session. Rubens and Nico would finish the session in fourth and eighth. Not that the times were meaningful given the variable weather conditions. It was reported that further rain was expected during the break leading up to the second practice session.

Pos  Driver         Team		   Time      Laps
 1.  Sutil          Force India-Mercedes   1:25.701  20
 2.  Massa          Ferrari                1:26.850  27
 3.  Button         McLaren-Mercedes       1:26.936  16
 4.  Barrichello    AT&T Williams-Cosworth 1:26.947  21
 5.  Petrov         Renault                1:26.948  21
 6.  Rosberg        Mercedes               1:27.448  20
 7.  Buemi          Toro Rosso-Ferrari     1:28.114  31
 8.  Hulkenberg     AT&T Williams-Cosworth 1:28.193  24
 9.  Liuzzi         Force India-Mercedes   1:28.300  19
10.  de la Rosa     Sauber-Ferrari         1:28.486  23
11.  Vettel         Red Bull-Renault       1:28.735  21
12.  Glock          Virgin-Cosworth        1:28.735  21
13.  Kubica         Renault                1:28.903  20
14.  Webber         Red Bull-Renault       1:29.048  13
15.  Trulli         Lotus-Cosworth         1:29.280  17
16.  Alguersuari    Toro Rosso-Ferrari     1:29.366  34
17.  Hamilton       McLaren-Mercedes       1:29.429  8
18.  di Grassi      Virgin-Cosworth        1:29.500  19
19.  Alonso         Ferrari                1:29.684  15
20.  Kobayashi      Sauber-Ferrari         1:29.690  17
21.  Fauzy          Lotus-Cosworth         1:30.938  27
22.  Senna          HRT-Cosworth           1:31.720  23
23.  Schumacher     Mercedes               1:32.450  13
24.  Yamamoto       HRT-Cosworth           1:32.791  26