The 29-year-old said the Spaniard has not altered too much at the club since succeeding Jupp Heycnkes as coach during the summer.
The former Barcelona boss took the reins from treble-winning coach Jupp Heynckes at the Bavarians over the summer, guiding the club to the summit of both the Bundesliga and Champions League Group D tables so far.
And Robben says the Spaniard has not deviated too far from Heynckes' blueprint for success.
The Netherlands winger told FAZ: "You don't have to exaggerate everything. Of course, he's changed a little bit, but he has not changed Bayern."
The 29-year-old, who has started seven of the club's 10 Bundesliga fixtures this season, was unhappy when benched by Heynckes last season but the Dutchman seems content to be denied starting berths under Guardiola.
"So far, we have had many injuries, so it's good to have started to strong," Robben said. "But of course that will happen when everyone is so fit. I don't think it's that bad. Staying on the bench isn't a problem."
Robben, who turns 30 in January, went on to fire an ominous warning to Bundesliga defenders, claiming they should not expect him to be any less of a menace despite his advancing years.
He added: "I don't have the feeling that I have to change my game because I won't be as quick. I still have the feeling that I have two or three top years ahead of me, especially with this team."