Lewis Hamilton set the fastest time, Max Chilton saw very little action and Kimi Raikkonen surprised in FP1 at Hungary.
It was no surprise to see Mercedes dominate yet another practice session in the 2014 World Championship with Hamilton this time getting the better of his team-mate Nico Rosberg in Budapest on Friday morning.
The 2008 World Champion topped the timesheets with a 1:25.814 - 0.183s better than that of Rosberg - with Raikkonen third and the second Ferrari of Fernando Alonso fourth.
Despite the hot conditions - the track temperatures reached more than 40 degrees Celsius - and the rear tyres going off quickly, Mercedes were one of the busiest teams with Hamilton doing 27 laps and Rosberg 31.
Raikkonen also had a good Friday morning outing as he put his recent troubles behind him to be P3 and ahead of his team-mate. The Ferraris were followed by Sebastian Vettel, Kevin Magnussen and Jean-Eric Vergne.
Red Bull are expected to do well in Hungary this weekend, but the second car of Daniel Ricciardo completed only 14 laps due to a battery issue with his RB10.
Williams will no doubt also be looking to upset the Mercs, but they made sluggish start with Felipe Massa P10 and Valtteri Bottas five places below his team-mate. The Grove squad, though, often don't show their full potential on a Friday.
Another driver who didn't have the best of mornings was Chilton as his Marussia caught fire moments after it completed the installation lap. The team reported that an oil leak from the exhaust was to blame and changed his gearbox and he appeared very late in the day for one lap.
01 Lewis Hamilton Mercedes 1m25.814s 27 laps
02 Nico Rosberg Mercedes 1m25.997s +0.183s 31
03 Kimi Raikkonen Ferrari 1m26.421s +0.607s 29
04 Fernando Alonso Ferrari 1m26.872s +1.058s 23
05 Sebastian Vettel Red Bull-Renault 1m27.220s +1.406s 28
06 Kevin Magnussen McLaren-Mercedes 1m27.357s +1.543s 28
07 Jean-Eric Vergne Toro Rosso-Renault 1m27.683s +1.869s 30
08 Daniel Ricciardo Red Bull-Renault 1m27.782s +1.968s 16
09 Jenson Button McLaren-Mercedes 1m27.804s +1.990s 27
10 Felipe Massa Williams-Mercedes 1m27.960s +2.146s 24
11 Esteban Gutierrez Sauber-Ferrari 1m27.967s +2.153s 25
12 Nico Hulkenberg Force India-Mercedes 1m28.101s +2.287s 28
13 Daniil Kvyat Toro Rosso-Renault 1m28.208s +2.394s 32
14 Pastor Maldonado Lotus-Renault 1m28.266s +2.452s 28
15 Valtteri Bottas Williams-Mercedes 1m28.330s +2.516s 21
16 Sergio Perez Force India-Mercedes 1m28.376s +2.562s 24
07 Romain Grosjean Lotus-Renault 1m28.593s +2.779s 24
18 Adrian Sutil Sauber-Ferrari 1m29.025s +3.211s 23
19 Kamui Kobayashi Caterham-Renault 1m30.363s +4.549s 30
20 Marcus Ericsson Caterham-Renault 1m30.892s +5.078s 24
21 Max Chilton Marussia-Ferrari 1m31.004s +5.190s 5
22 Jules Bianchi Marussia-Ferrari 1m31.248s +5.434s 20
Friday's Shots From Hungary