Mick Schumacher collected his second and third pole position of the season, while Job van Uitert won the Qualifying Race at the Lausitzring.
Championship leader Joey Mawson continues his podium run by taking his third win of the season, extending his advantage to 35 points.
Ortmann fell back to fourth in the early stages, but benefitted from incidents before taking the lead to take his second win of the weekend.
With polesitter Kim-Luis Schramm struggling to get away from the start, Mike Ortmann took the advantage to lead from lap 1.
After topping the first group, Kim-Luis Schramm took his first pole of the season, while Mick Schumacher will line up in front for race two.
After starting on pole, Michael Waldherr dominated to take a win in the ADAC F4 qualifying race, while Halder’s retirement sees her out for the weekend
After winning the final race of the weekend, Mick Schumacher looks to be able to replicate his success as he attempts to catch leader, Joey Mawson.
Another lights to flag victory saw Joey Mawson extend his championship lead with the van Amersfoort Racing squad after a breif red flag.
Joey Mawson kept his cool in the opening ADAC Formula 4 race of the season to defend from Kim-Luis Schramm and take victory at Oschersleben.
Joey Mawson becomes the first polesitter of the new ADAC F4 season, while Luca Engstler won the first last-gasp Qualifying race as part of the series new format.
With all eyes on one young German, The Checkered Flag looks ahead the second ADAC Formula 4 season that starts this weekend at Oschersleben.
The highly profiled Mick Schumacher was the man to beat at the end of two days of testing at Oschersleben ahead of the ADAC Formula 4 season.
ADAC Formula 4 is set to see another record breaking grid as 45 drivers and 17 teams have announced their intentions to race in 2016.
Experienced Formula 4 driver Michael Waldherr will return to ADAC F4, but has decided to move from Motopark to the Lechner Racing team.
Kim-Luis Schramm has joined US Racing, the new name for the HTP Junior Team, which drove Marvin Dienst to the 2015 ADAC F4 title.
South African karter Jonathan Aberdein will make his open wheel debut, joining Sophia Floresch at Team Motopark for the 2016 ADAC Formula 4 Season.
After half a season in Ginetta Juniors, 15 year old Sophia Floresch will join Motopark in the 2016 ADAC Formula 4 championship.