Spanish GP preview quotes: Williams

Valtteri Bottas: Whilst I have never raced at Barcelona in Formula One, I know the track really well as I've raced there in Formula Renault and Formula 3 and I've done a lot of testing with Williams at the circuit. The win last year in Barcelona was a big motivational boost for everyone and was a good example of what we can achieve when everything comes together. We are working hard to get back to that level and following a good aero test last week at Idiada and a number upgrades coming for this race, hopefully Barcelona can be the start of improved performance for us this year.

Mike Coughlan, Technical Director: The Spanish Grand Prix is always one we look forward to as it is a track we all know well due to the amount of time spent there during winter testing. We also have fond memories of Pastor's win there last season. A lot of engine and chassis decisions are also based around Barcelona as teams have so much data from there.

Track conditions can change a lot during the weekend, making it a challenge to get a good set-up. The track layout, with its high average speed, also makes it quite hard on tyres. Surprisingly it has a similar power sensitivity to Monaco, due to the long corners and demand on handling. As the first race back in Europe, traditionally many teams will bring upgrades to their cars - and we are no different. Following a successful aero test at Idiada last week, we have a number of upgrades which we will be looking to run over the coming races.