Speaking to DAZN and goal.com, Svensson played under Tuchel at Mainz and labelled him as a special coach.
"You immediately noticed that he is a special coach and that he thinks a little differently," Svensson said. "I have never seen such an appearance in front of a team or such training in this form as a player."
Tuchel has taken four points out of six so far in the Premier League and is already enforcing his philosophy at Stamford Bridge.
"There were few games under Tuchel that we were surprised at," the Dane said. "We pressed against Bayern very early in Munich."
One of the German's first tactical tweaks at Stamford Bridge has been deploying Callum Hudson-Odoi as a wing-back. Svensson, who was a centre-back, also recalls the time he was played in the midfield.
"I was very surprised. But it worked and we won.
"I thought for a moment that he had lost his marbles when I saw that tactic."
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