The Three Lions beat Costa Rica 3-0 in a convincing win on Wednesday (10.06.26) a week ahead of their tournament opener in Group L against Croatia, with goals from Declan Rice, Anthony Gordon and Ollie Watkins securing victory.
After the game, Tuchel said: "Until now, it was more a feeling of a pre-season, like an overseas pre-season, and it was good like this.
"I think it's enough if the pressure and tournament pressure comes a bit later, because it will come. The tension will come naturally.
"I think we set the tone today in the meeting and the players were ready to follow, to have the next step in intensity and the way we play, to push ourselves and get a good feeling out of it, which we absolutely did."
Tuchel noted that he felt "the energy in the stadium was amazing", and enough to inspire the players and fans alike.
He added: "I thought 'OK, if we can really play like this and grow into the tournament and have this kind of cohesion and brotherhood and team spirit that we showed today, then we will have an amazing connection with the fans'.
"This will hopefully be an amazing experience because it's the first time for me and it's a World Cup, and it's coming.
"I think once the ball is rolling and games are already there, then I will feel it, and the latest in Kansas when we prepare then the official match.
"The tension will grow but normally the stuff that I personally enjoy the most, then you feel that you're alive."
England still have one more fixture before the World Cup gets underway, which is a behind-closed-doors game against Miami FC.
The weather in the US will be unpredictable with a thunderstorm forcing a delay to the Croatia game, but the England squad feels prepared.
Rice said: "The manager said that is what we are going to face at this tournament. They had it at the Club World Cup where it was stop-start.
"Even in a game, you could be playing 60 to 65 minutes and the next thing thunder and lightning can strike and you have to come off.
"You have to adapt to anything and the manager has made us fully aware of that. It was good to get a taste of what could potentially come and how we deal with it."
