Sundowns sealed a 4-2 aggregate win after a 2-0 return leg victory in a Second preliminary round clash over Maniema Union, thanks to goals by Lyle Lakay and Peter Shalulile at Loftus Versfeld Stadium.
Speaking after the final whistle, Mngqithi was confident in his side's capabilities to compete in every competition this season.
"We are of the view that we've got a better team than last season," Mngqithi said post-match.
"Even though last year we believed we had a very, very good team.
"If you can still remember what transpired last season. We performed very well and to score a goal against Al Ahly through Peter Shalulile who was adjudged offside. Because if that goal was allowed it could have turned that game into a different space as well.
"But the group that we have this year has been reinforced a little bit from what we had last year and we are very hopeful that they have got the capacity to win the Champions League.
"We have got to take each step, each game as it comes and see what we end up.
"But we are very confident that the group that we have has got the capacity to lift any trophy that is on offer, but we have to take each and every game and give it the seriousness and attention that it deserves.
"Each and every opponent then becomes critical in us achieving those targets."
Sundowns next face a date with destiny on Saturday as they face Cape Town City in the MTN8 final with an aim to lift the trophy for the first time.
Kick-off is at 18:00.