Toni Kroos, Simon Rolfes, Eren Derdiyok and Steffan Kiessling scored the goals for Leverkusen.
“Toni Kroos’ early goal helped us take control and we played some outstanding football,” said Heynckes.
“The most important thing for me was that we didn’t take our foot off the gas after going 3-0 up.
“It is very pleasing that the team came out in a solid and stable performance in defence, that gives us confidence for the future.”
