His brother Alex Marquez took second with Francesco Bagnaia third as only 10 riders finished, the lowest number completing a MotoGP since 2011.
While the rest of the grid struggled to remain on their bikes at this notoriously tricky Sachsenring track, Marc Marquez enjoyed a dream afternoon.
Setting off from pole he was never challenged, crossing the line over six seconds clear for his seventh perfect weekend of 2025 having also won Saturday’s sprint.
At the midway stage of the 22-race campaign Marquez leads brother Alex by 83 points in the riders’ standings, with his Ducati factory teammate Bagnaia a yawning 147 off the lead.
“My confidence is super high now coming here with three wins in a row and now it’s four,” beamed Marquez.
“I have to be really concentrated for the second half of the season.”
His younger sibling was competing despite fracturing his left hand at the Dutch MotoGP a fortnight ago.
“It’s unbelievable, thanks to the doctors and everyone that I’m here,” he said after his 100th MotoGP start.
For the older Marquez, this was his seventh race win of the year and fourth on the trot as he tightens his grip on a seventh MotoGP world title – and first since 2019 – to draw level with the legendary Valentino Rossi. (AFP)