Driver Bruno Senna
Chassis / engine FW34-01 / RS27-5326/1
Location Jerez de la Frontera 4.428km
Objectives Set-up work and race simulation
Weather Cold and sunny
Ambient & track temps -2 - 17ºC / 0 - 26ºC

After a productive third day the Williams F1 team would get the fourth day of their Jerez test underway with Bruno Senna again behind the wheel. On a very cold day Bruno would go out for his installation lap, returning to the track for a short run setting times in the high 1m:27s. He would pit to return for just a handful of laps setting a best time of 1m:23.217. His next series of laps would see him complete seven laps. His next two runs would be very long and by the third hour Bruno would have completed fifty laps. His times at this point were in the 1m:25s as he would pit after having completed a twenty five lap run.

On his next long run he would set a time of 1m:22.394. After this his times would drop into the 1m:23s and 1m:24s. He would pit again after having completed a total of eighty two laps. It looked very much like the team was conducting race simulations with the new FW34. He would return to the track and on this run his times would drop down into the 1m:21s but on lap eighty five he would set a 1m:20.132. This series of laps would see him pit after twelve laps. On his return to the track he would complete one shorter runs with times in ranging from the low 1m:25s through to the 1m:24s.He would pit and then return to the track to commence another longer run.

It was during this time that Bruno would be forced to pull off the track at the Senna Chicane with some suggestions having him run out of fuel. His car would be returned to the pits on the back of a flatbed truck.

After his small issue everything would go well for Bruno as he continued to work through the teams test programme. With just over an hour remaining Bruno had completed one hundred and fifteen laps as he continued on his way. He would complete further laps with his times in the high 1m:23s to 1m:24s. One hundred and twenty laps from Bruno as he pitted with an hour remaining. The time sheets would see Alonso quickest with a 1m:18.877. But on his next run things would go wrong for Bruno as he would stop his cat at Turn two after having what seemed like backing off as he went past the pits apparently aware that he had another issue. His car would again be returned to the pits with it been unsure as to whether he would return to the track with just a half an hour remaining.

Mark Gillan, Chief Operations Engineer: We had a very productive day, with Bruno successfully completing a full race simulation this morning and performance development testing during the afternoon. On the whole this has been a good first test for the FW34 and we have learnt a great deal about the new car. I'd like to thank the whole team for their massive effort this week.

Bruno Senna: It’s been another productive day with us testing a number of different set-up directions and finding out a lot more about the car. The car has continued to show good reliability as we completed 124 laps today, which is very satisfying. I’m happy to have started my first two days in the car for Williams on a very good note.

The Williams F1 Team will be back on track to continue pre-season testing at the Circuit de Catalunya, Barcelona from 21 – 24 February.

DRIVER      	 TEAM 		  	TIME       BEST / TOTAL
						   LAPS
1 F Alonso 	 Ferrari 		1:18.877   16 / 39
2 J E Vergne 	 Toro Rosso 		1:19.597   28 / 80
3 S Vettel 	 Red Bull Racing 	1:19.606   30 / 49
4 L Hamilton 	 McLaren Mercedes 	1:19.640   34 / 86
5 R Grosjean 	 Lotus F1 Team 		1:19.729   22 / 95
6 K Kobayashi 	 Sauber F1 Team 	1:19.834   20 / 76
7 N Hulkenberg 	 Sahara Force India 	1:19.977   43 / 90
8 B Senna 	 Williams F1 Team 	1:20.132   85 / 124
9 J Trulli 	 Caterham F1 Team 	1:22.198   70 / 117