Hydraulic problems hamper Vettels day

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It was a day of mixed fortunes for the Scuderia Toro Rosso drivers at the Hungaroring near Budapest. Sébastien Bourdais had a normal Friday while his German team mate Sebastian Vettel suffered hydraulic problems in both practice sessions.

Sébastien Bourdais (STR3-01): "Not too bad today. This morning was the first time I have driven here since the track configuration was changed, so I was finding out what it's like in a Formula 1 car. That went okay. This afternoon it was the usual programme of evaluating the tyres with different fuel loads. The track rubbered in quite a lot towards the end and as I did low fuel runs earlier in the session, this did not show in our later lap times. I was struggling a bit on the Option, which I had expected. As this track changes a lot, if you don't have a major problem with the car, it's best to leave it alone and see what happens on the second day. Otherwise, you make changes to the car which are not appropriate for the Saturday conditions. You have to be patient!"
First Practice Session
Best lap 1.22.900, pos. 13th, 26 laps
Second Practice Session
Best lap 1.21.955, pos. 15th, 41 laps

Sebastian Vettel (STR3-03): "I had hydraulic problems in both sessions. A shame because I lost a lot of track time and Friday's work is very important. I hardly ran at all and therefore we are lacking information which will be a handicap for the rest of the weekend. Obviously, this means the data from the other car will be twice as important as usual. I will try and learn from Sebastien, but relying on your team-mate is never as good as finding your own way around the track. Hopefully I can catch up a bit tomorrow morning."
First Practice Session
Best lap 1.23923, pos. 20th, 4 laps
Second Practice Session Best lap 1.22.945, pos. 20th, 5 laps