Borussia Dortmund take an unbeaten season record into Wednesday's Champions League date with Atletico Madrid which is seen as their first big test of the campaign.

New coach Lucien Favre has so far worked wonders with his young side, topping the Bundesliga, and Champions League Group A together with Atleti on a maximum six each.

But wins including a 7-0 demolition of Nuremberg and a 4-0 in Stuttgart on Saturday will mean nothing on Wednesday against the shrewd tactician Diego Simeone had his team which reached the Champions League final in 2014 and 2016.

"We're ready for Atletico Madrid. They're very strong defensively and line up in a compact 4-4-2 formation. But we'll need to be patient. That'll be a test of our maturity and where we're at, but I believe in us," Germany attacking player Marco Reus said.

Fellow forward Maximilian Philipp said that "we are all really excited" but added: "Atletico have a super team. They've consistently competed at the top, both nationally and internationally, in recent seasons. It'll be a tricky test."

Dortmund's high-powered attack with the likes of Reus, league top scorer Paco Alcacer and English teenage sensation Jadon Sancho has scored 31 goals in eight Bundesliga matches and the two wins over Brugge and Monaco in Europe, more than double Atletico's 15.

"We have big ambitions," the new England international Sancho said, and the former Moenchengladbach and Nice coach Favre also had plenty of praise for the attack.

"We have young players on the flanks. They're strong in one-on-one situations, they have big ambitions and they can link the play very well. But we need to continue to work hard," Favre said.

But as important is that Dortmund have conceded only eight goals in these 10 matches which is just one more than Atleti with their famed back line.

It shows that Favre has managed to restore stability which the team badly lacked last year when they went out in the Champions League group stage and barely managed to finish fourth in the league.

Newly signed holding midfielders Axel Witsel and Thomas Delaney have improved the balance between Dortmund's high-powered attack and their defence, which has also improved compared to 12 months ago.

"We know that it'll be difficult. But we absolutely want to win," Delaney said.

Dortmund remain a little cautious because they also had a super start into the past season before crumbling, leading to the departure of coach Peter Bosz, and Peter Stoeger then struggling as caretaker for the rest of the season.

Victory against Atletico would ease fears of a possible repeat, and the mere fact that they are in the same group will make some dream big.

The two sides met for the first time in the quarter-finals of the 1965-66 Cup Winners' Cup, and again in the group stage of the 1996-97 Champions League.

Dortmund went on to win the trophy on both occasions.