Hello and welcome to our LIVE coverage of the third and final session of free practice for the German Grand Prix. Pit lane opens at 9.00 GMT, 10.00 BST.

Button is back in the pits for a new set of tyres and 17 drivers have set a time. No sign of the Red Bulls still though.

Adrian Sutil goes into eighth in the Force India and is six tenths off the lead. Rosberg leads from Hamilton as the Mercedes look in fine form. Then it’s the two McLarens of Button and Perez.

Sparks fly from the base of Grosjean’s Lotus – not a new problem for the team.

Just a quick reminder that Pirelli and the FIA have set tyre pressures to avoid failures seen at Silverstone this weekend.

No sign of the Red Bulls just yet as they keep their powder dry. Big things expected of Vettel as always.

Max Chilton runs wide in the Marussia and has to negotiate his way past Grosjean in the Lotus, who acknowledges his mistake.

Here comes Lewis Hamilton, twice winner of the German GP and the fastest man in FP1.

Button has registered the second fastest lap so far, nearly eight tenths off the pace set by Rosberg.

If you get a spare minute or two, why not have a peek at our ultimate guide to the German GP.

And Rosberg delivers with a 1:31.911, nearly eight tenths quicker than Perez.

Nico Rosberg with a 1:39.618 for Mercedes but he will obviously be putting in some much faster times than that.

Another quick lap from Perez who is enjoying himself in the McLaren. 1:33.684 this time from the Mexican.

Sergio Perez sets the first flying lap for McLaren when going round in 1:34.382.

No quick times to report just yet.

Jenson Button joins the fray for McLaren in a busy start to the last practice session, though Lewis Hamilton is still in the pits for Mercedes.

Pastor Maldonado is out on track despite those KERS problems so Williams will be relieved to have him in action in their 600th Grand Prix.

Here we go. Cars pour onto the track from the pit lane at the Nurburgring.

Pastor Maldonado's car has suffered a KERS failure in the garage two-and-a-half hours before the start of Saturday morning practice. The Williams Formula 1 team has confirmed that fire marshals attended the scene and contained the situation, which did not cause any injuries. It is as yet unclear what damage the KERS problem has done to the car, with Williams currently investigating the incident.

We can expect an overcast day with bursts of sunshine and temperatures of around 16c. There's a zero per cent chance of rain but humidity is hitting the 80s.

Sebastian Vettel, yet to win his home GP, topped the times in FP2 while Lewis Hamilton was quickest in the morning session.