Low will have the luxury of almost a year to prepare for the tournament in Poland and Ukraine after his team, facing former coach Berti Vogts who is now with Azerbaijan, moved 10 points clear of Belgium at the top of Group A.
At the most they need three points from their final three games but will also qualify if third-placed Turkey, the only team who can catch them, fail to win all of their last four matches.
"It was a comical feeling, to be the oldest player on the pitch, but that shows how much quality we have in Germany," said Lahm.
"The important thing was that we won today and finished the season with seven wins. It was a perfect season."
Vogts, attacked by three men at a press conference on Sunday following Friday's 2-1 loss in Kazakhstan, could only wish he had the same riches to pick from after his team lost for the fifth time in seven group games.
"Here, they play on the street until they are 15 or 16, they have to learn basic skills during our training sessions," he said.
"Germany play in a different league to us and the fans don't understand that."
The Real Madrid midfielder then set up Germany's second, slicing open the Azeri defence for Gomez, who scored both goals in the 2-1 win over Austria on Friday, to double the lead just before the break.
Afterwards, Low seemed to be thinking more of the end-of-season break than next year's tournament.
"It's 24 days since the end of the Bundesliga," said Joachim Low. "The players are at the limit after a long season."
