Driver: Valtteri Bottas
Chassis / Engine: FW38-02 / PU106C Hybrid
Location: Circuit de Barcelona-Catalunya, 4.655km
Weather: Warm and Dry
Maximum air & track temps: 20ºC / 27ºC

For Williams Martini Valtteri Bottas would again be behind the wheel as the second day of their Barcelona test got underway. Valtteri would complete an installation lap prior to pitting while quickest at this early stage was Rosberg with a 1m:29.925 followed by a 1m:26.263. Valtteri would return to the track and would set a 1m:27.427 to be second, running on medium tyres. Valtteri would improve with a 1m:26.846 and then would pit having completed just six laps. Perez would move to the top of the times with a 1m:25.835, but Rosberg would reverse this with a 1m:25.479.

Valtteri would return to the track but with close to two hours of the session completed he had only completed thirteen laps. But Valtteri was able to find some small improvements setting a 1m:26.754 followed by a 1m:26.501 prior to pitting. Ricciardo had gone quickest with a 1m:25.223. Vettel would set a 1m:24.940 which was 0.001 off his day one time. On his next run Valtteri would set a 1m:25.872 but his run would be stopped by a red flag as the Torro Rosso of Verstappen stopped out on the track. Valtteri would pit having completed thirty five laps.

With the restart of the session Rosberg would set a 1m:24.867 to be quickest. Valtteri would also return to the track currently fifth. For the first time the super soft tyre would make an appearance seeing Ricciardo goes quickest with a 1m:24.298. Also out on the super soft tyre was Vettel who would set a 1m:23.658 to be quickest. For Williams Valtteri had only run on the medium tyre while those around them moved onto the soft and supersoft tyre. Ricciardo was now on the new ultrasoft tyre, joined by Vettel. Vettel would set a 1m:22.810 to again be quickest as the morning session came to a stop. Valtteri had completed fifty six laps at the lunch break.

With the start of the afternoon session it would not take long before the second red flag would come out with the Renault of Palmer stopping out on the track. With the restart Valtteri would take to the track this time running on the soft tyre. This would be followed by a long run on the hard tyre. On this tyre Valtteri would lap in the 1m:31s. His next run on the soft tyre would see Valtteri set his best time with a 1m:25.648. Valtteri had pitted and would return to the track only to see a red flag caused by Vettel's stopped Ferrari. With the stop Valtteri had complete one hundred and thirty four laps, showing reliability with the FW38. The session would not be restarted so Valtteri would finish in seventh.

Rod Nelson, Chief Test & Support Engineer:
It has been quite a positive day for us. We were aiming for some longer runs and reliability work. We also did some aero work and quite a lot of chassis work. It has been an interesting day for all the engineers and the driver. I am looking forward to Felipe getting in the car for the first time tomorrow to get a different point of view. We are all working hard and it has been a good day.

Valtteri Bottas:
We completed the whole programme we had for today, so that is always good. Everyone in the garage has been working very hard. I am pleased with the amount of laps we did today, with the mileage and reliability that we already have in the car. Like yesterday, we are just going through our programme and not focussing on the performance yet, so there is still a question mark as to where we are compared to the other teams. I think it will be interesting to follow what things Felipe is going to try with the car. I’m looking forward to next week now as well, to get back in the car and try to get a bit more out of it.

Driver 		  Team 	    	   	Best Time  Best / 
		   				   Total Laps
1.  S. Vettel	  Ferrari	  	1:22.810   38 / 126
2.  D. Ricciardo  Red Bull Racing 	1:23.525   52 / 112
3.  S. Perez	  Force India F1 Team	1:23.650   67 / 101
4.  N. Rosberg	  Mercedes AMG F1 Team	1:24.867   65 / 172
5.  M. Ericsson	  Sauber F1 Team	1:25.237   82 / 108
6.  E. Gutierrez  Haas F1 Team		1:25.524   70 / 79
7.  V. Bottas	  Williams Martini	1:25.648   122 / 134
8.  P. Wehrlein	  Manor F1 Team		1:25.925   27 / 71
9.  F. Alonso	  McLaren		1:26.082   88 / 119
10. J. Palmer	  Renault Sport F1 Team	1:26.189   29 / 42
11. M. Verstappen Toro Rosso		1:26.539   111 / 121