Belgium preview quotes: Williams

"It's the most complete track of the season and this tests you as a driver and also tests the car's setup. It also has the famous Eau Rouge corner which puts a lot of G force and pressure on your body. You feel this even more during qualifying when you are low on fuel and are trying to get the most from the car.

"The weather can be changeable and because it is such a long track, there are times where the track can be wet in one sector but dry in another which requires the teams to make some difficult strategy decisions. Two years ago I picked up my first point in Formula One here and hopefully I will be in the points again this weekend."

Valtteri Bottas: "I first drove at Spa in 2007 in Formula Renault and immediately fell in love with the track. It's very high speed, flowing and undulating and gives you a real adrenaline rush. Achieving a good car setup is difficult because of the wide variety of corners, but we will try to get as much information as we can during the practice sessions to find the most appropriate setup for qualifying and the race.

"I've had a good break during the shutdown period but I'm now itching to get back in the car. We have shown some improvements in race pace over the past few races and we know we are heading in the right direction. We will therefore be looking to have another points scoring result this weekend that will give us good momentum for the second half of the season."

Xevi Pujolar, Chief Race Engineer: "After the August break it is great to be back racing again and the whole team is looking forward to arriving at Spa-Francorchamps this weekend. It is one of the most challenging circuits in the world for both the car and drivers as you see every kind of corner from long flowing curves to twisty chicanes and hairpins. It's one of the fastest circuits with an average speed of 230kph and is also the longest single lap of the year at 7.004km.

"With DRS and the long lap resulting in large differences in tyre degradation between strategies, overtaking is usually easier here than at many other tracks. Weather is often very changeable here and although early forecasts show a chance of rain on Sunday only, this can quickly change.

"Also, given the length of the circuit there is an added challenge in selecting tyres in changeable conditions as certain parts of the circuit can be much wetter than others. Overall, we are looking forward to getting the final races of the season underway."