Los Blancos ran out comfortable winners at Santiago Bernabeu but the Portuguese demanded a greater level of performance from his side, as Luka Modric made his La Liga debut
Cristiano Ronaldo's 149th and 150th strikes in Madrid colours and a third from Gonzalo Higuain secured the Los Blancos their first three point haul of the new campaign, but the Portuguese was more than conservative with his praise.
"The team didn't play badly, but I want more," Mourinho told reporters at the post-match press conference.
"We had little time to prepare during the week but we must be in top form."
He was, however, delighted to see his new signing Luka Modric in action. On his inclusion in the squad, Mourinho remarked: "It was important for Modric to play tonight. He responded well and had a positive game."
Madrid's next game sees them travel to Sevilla.