Manchester City manager Pep Guardiola
Manchester City kicked off their European campaign impressively as they ran out 5-0 winners in Romania.
City started well and could have been a goal up in the ninth minute when Raheem Sterling won a penalty.
However, talisman Sergio Aguero uncannily had his penalty saved.
Four minutes later City were in the lead. After Sterling chased down a loose ball, he quickly chopped inside before finding the onrushing David Silva.
Making no mistake, the Spaniard emphatically found the net.
It could have been 2-0 soon after when City were awarded a second penalty after Aleks Kolarov was tripped.
But to the disbelief of everybody, Aguero blazed the penalty over the bar.
He was back to his typical self as he made amends in the 41st minute finishing off a fine City move after Sterling's one lay off.
City started the second half as they finished the first and found themselves three up inside the 49th minute.
Finding himself on the end of a sublime Kevin De Bruyne through ball, Nolito took the ball around the keeper to open his City account.
City were playing some electrifying football and were rewarded with 12 minutes to go when Aguero grabbed his second after some intricate build up play with Nolito.
And Aguero truly made up for his earlier mistakes when he sealed his eighth City hat-trick in the 88th minute.
Here are five things learned from the rout...
Aguero is human after all
Putting the ball in the same spot as he did against Vito Mannone, the Steaua 'keeper guessed the right way as the Argentine had his effort parried away.
And when he stepped up for his second penalty, he looked bereft of confidence as he skied it high.
But make no mistake, Aguero is one of the world's finest strikers, and he reminded everyone of his ability with three sublime finishes.
Raheem Sterling produced another electrifying performance for Manchester City, after a man of the match performance at the weekend.
The 21-year-old had a dismal time at the Euros where he looked well short of confidence.
However, Guardiola is renowned for improving players and Sterling is flourishing under his new manager,
If he can continue to play the way he is, then he will quickly put to bed any questions that have been raised over his £44 million transfer last summer.
Like Guardiola, many of his players are Spanish, or from Spanish speaking countries.
The contingent, compromising of Pablo Zabaleta, Nicolas Otamendi, Fernandinho, David Silva, Nolito and Sergio Aguero were too much for Steaua to handle as they attacked at every opportunity.
In the second-half they played with some real freedom and the attacking trio of Silva, Nolito and Aguero looked as if they'd been playing together for years.
If the chemistry can continue to blossom, then City will be a tough opponent for any side in Europe this season.
A broken Hart
England number one Joe Hart was dropped at against Sunderland, as Pep preferred Willy Cabellero.
It was the same again on Tuesday in Romania, as he had to settle for a place on the bench.
Prior to kick-off, Sky Sports reported that Hart will be leaving the Etihad before the end of August when the transfer window shuts.
It is a sour way for the City icon to end his affiliation with the club after 267 appearances in a blue shirt.
Beauty and a beast
Something special is happening at Manchester City.
Pep's arrival brought a re-branding to the club, and with the new image comes a new style of play.
City were in cruise control from the very off, spreading the ball nicely and attacking with pace and intent.
Though the score itself resembled a rout, it may have flattered the Romanians who had their 'keeper to save for keeping it below double figures.
And speaking to BT Sport at the final-whistle, Guardiola praised his team.
He said: "From the beginning, the way we played was a great performance. We played really good, and the result shows that.
"I am so satisfied, it is a great compliment to all these players. It was fantastic."