Thomas Tuchel's team booked their place in the tournament's last four with a 2-1 extra-time victory over Norway on Saturday in Miami, recovering from a goal down to secure only the fourth World Cup semi-final appearance in England's history.
Jude Bellingham struck twice to seal the comeback, taking his combined tally with Harry Kane to five goals across England's knockout victories. Madueke believes the pair's excellent form gives rival defences plenty to think about.
England's path to the semi-finals has been anything but straightforward. They edged past DR Congo 2-1 before claiming a dramatic 3-2 victory over Mexico on the hosts' home soil, with both encounters proving fiercely contested.
Next up is a semi-final against Argentina on Wednesday, with a place in the final at stake. The winners will meet either Spain or France.
"Very confident," said Madueke when asked about how he was feeling ahead of the Argentina game, on the latest episode of Lions' Den Connected by EE.
"Like B [Bukayo Saka] said, we have match-winners and going through the tournament we haven't really focused on the opposition in a sense where we're worried about them.
"I feel like other teams will be more worried about us."
He added: "It's been a good experience, coming into the last week now. It's all about finishing strong."
Andrea Pirlo has confirmed he is no longer in the running to become Italy's next head coach after his commercial links with a Russian betting company came under heavy scrutiny.
FIFA president Gianni Infantino has defended the 2026 FIFA World Cup, accusing critics of spreading "hate" and "false rumours" while insisting the tournament was a success that united football fans around the world.
Chelsea manager Xabi Alonso believes new signing Morgan Rogers has everything needed to make an immediate impact at Stamford Bridge and says the England international will strengthen the club's attacking options.
Thibaut Courtois believes Belgium have appointed the right man after Mark van Bommel was named the national team's new head coach, with the Real Madrid goalkeeper praising the former Netherlands international's experience and leadership.
