Robert Lewandowski's sizzling form putting Luis Suarez in the shade and Bayern Munich the well-oiled winning machine that is never satisfied are just two of the key reasons the Bundesliga champions will make it a double over Atletico Madrid in UEFA Champions League Group A on Tuesday (kick-off: 8pm GMT).

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bundesliga.com takes a look at why Bayern - Group A winners with room to spare - can repeat their 4-0 triumph in the reverse fixture...

1) Lewandowski out-stripping Suarez & Co.

After setting a new Bundesliga record for a foreign-born goalscorer and coming within two of Cristiano Ronaldo's 2013/14 Champions League best-mark of 17 in an outrageously successful last season, Lewandowski has simply picked up where he left off.

Watch: The best of Robert Lewandowski at Bayern Munich

The 2020 UEFA Best Player moved level third in the all-time Champions League charts with his strike against Red Bull Salzburg last time out, taking him on to 71 all told and three for the current campaign. He was also on target as Bayern came from behind to beat VfB Stuttgart 3-1 on Saturday, thundering in a league-leading 12th of the season from fully 20 yards. That's 15 goals in 14 games in 2020/21, and counting.

Atletico's Luis Suarez has five goals in nine outings, but is an injury concern ahead of the visit of Europe's best team, leaving Joao Felix and Marcus Llorente - on seven and four goals respectively in 13 appearances - with the unenviable task of trying to keep up with Lewandowski

2) Winning habit

Speaking of gold standard, this is Bayern's 24th Champions League group stage campaign. They've topped the pile on 17 occasions - for the third time in a row thanks to this term's ahead-of-schedule triumph.

Bayern won all 11 of their games en route to lifting the 2019/20 Champions League. - Frank Hoermann/ SVEN SIMON/SVEN SIMON/ Frank Hoermann/ Pool

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Bayern have won all four of their group games so far, having romped to the the 2019/20 Champions League title with a 100 per cent record.

It's now 15 tournament wins on the bounce for the six-time European champions - 16 in UEFA competition, including their Super Cup victory against Sevilla.

3) The first leg

Atleti know all too well how difficult a proposition it is to topple Bayern. Traditionally one of Europe's toughest nuts to crack, the current La Liga leaders were overwhelmed in the reverse tie.

It wasn't quite Barcelona levels on the chastening scale - Bayern recorded a famous 8-2 win over the Catalans in last season's quarter-finals - but the gulf was still clear as day.

Bayern were simply too good for Diego Simeone's charges, their passing more crisp and their finishing more clinical. The only surprise was that Lewandowski didn't score one of the holders' four goals.

4) Coman the Bavarian

Instead, it was Kingsley Coman who took centre stage at the Allianz Arena with a brace and an assist.

Bayern winger Kingsley Coman has already done the business once against Atleti, and is in the form of his life. - Peter Schatz/Peter Schatz / Pool

Coman - the match-winner against former club Paris Saint-Germain in last season's final - was expected to play second fiddle to Serge Gnabry and summer signing Leroy Sane in 2020/21, but is outperforming both with five goals - including three across his last three competitive games - and four assists.

Indeed, no Bayern player has had a direct hand in more goals in this term's Champions League than the France whizz (three goals & two assists).

5) A collective goal machine

The likes of Lewandowski and Coman make it almost impossible to outscore Bayern.

Since Hansi Flick took charge on 3 November 2019, the reigning treble winners have plundered 170 goals and conceded 46 in 52 competitive assignments.

They struck 24 times in the 2019/20 groups, and 43 over the course of the tournament, setting a new record for goals in a single Champions League campaign since the second group stage was replaced by knockout ties.

And while Bayern ultimately finished two goals short of the record set by Barcelona in their 16-game run to the last four in 1999/2000, it's worth pointing out they played in five fewer matches in the truncated edition of the competition.

Four matches into their title defence, the Reds have already stuck away a Champions League-leading 15 goals.

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