Drivers reacted positively to the changes done to the track
A tough afternoon saw the team drop to P3 in the Constructors' Championship, three points behind Ferrari.
Lewis Hamilton qualified P12 after his second run in Q2 was disrupted by traffic, particularly at the end of his timed lap.
Overall, the team enjoyed a productive and trouble-free technical programme, a good starting point for the weekend.
The famous Austrian said Alonso runs the risk that Ferrari will eventually turn away from him.
Lewis Hamilton and Nico Rosberg took third and fourth places respectively and Mercedes consolidated second place in the Constructors' Championship, scoring a total of 27 points.
Nico Rosberg qualified fourth and was fastest of all until the dying moments of the qualifying session.
Both Mercedes drivers completed high-fuel running on each tyre, Lewis Hamilton ran longest on the prime compound and Nico Rosberg on the option.
The 28-year-old acknowledged that the 2014 rules revolution is a "huge opportunity" for a works outfit like Mercedes.
Lewis Hamilton's win was the 13th Formula One win for a Silver Arrow and the third victory in five races for the team that is on second position in the Constructors' Championship.
Lewis Hamilton took the 30th pole position of his career this afternoon at the Hungaroring and his fourth at this circuit, Nico Rosberg qualified in fourth place.
An alternative three-stopper is to start on the soft tyre, change to the soft again on lap 13, change to medium on lap 26, and finally medium again on lap 48.
Today gave the first opportunity for the team to try the new Pirelli medium and soft tyre compounds for the first time.
The 2012 Hungarian Grand Prix featured fewer overtakes (19) than last year's race in Monte-Carlo (23). At 610 metres, the run from the start to the first corner is the fourth longest of the entire season.
Among the attendees were Bianchi, Chilton, Rossi, Kovalainen, Valsecchi, Gene, Button, Hamilton, Buemi, Rosberg and Perez.
A safety car with 36 laps to go prompted most drivers to make their second stops, with the final stops coming in the closing stages of the race.
Nico Rosberg's P9 finish, coupled with 10 points for Lewis Hamilton, mean the team remains second in the Constructors' standings.
It is the first Mercedes-Benz pole position at the German Grand Prix since Juan Manuel Fangio in 1954 at the Nordschleife.
Nico Rosberg and Lewis Hamilton completed a total of 123 laps today, equivalent to just over two race distances, on the new Pirelli tyres.
Vettel set fast time for his home race at the Nurburgring. The three-time consecutive World Champion commented on the GPDA meeting held yesterday concerning Pirelli.