They have big ambitions to win the championship, but the problem of consistency in performance is still one of the obstacles that cannot be overcome. Frankfurt is currently in second place, they have managed to beat Leverkusen, Leipzig and Dortmund, but Bayern Munich is still very safe at the top of the standings with a 6 point advantage. It will be very difficult for Frankfurt to be a contender in the title race if they are not consistent in maintaining their performance because Bayern Munich are also very ambitious to win the title after their dominance collapsed last season.
Actually i want to see Leverkusen can being an strong contender with Bayern Munich for race title but unfortunately Leverkusen performance is decline compared to last season and about Frankfurt actually their manager Dino Toppmöller never targetting the championship because he has realize it's hard to compete with Bayern munich and although Frankfurt recent performance is very impressive but i highly doubt they can able to managed their consistency until ended of this season
I have to says for Bundesliga Bayern Munich is too consistent compared to other teams so they didn't gets decent opponent for the title and i know Frankfurt currently in the second place but i don't think they can able to taking over first place from Bayern Munich
Leverkusen is currently in 3rd position with a gap of 7 points from the top of the standings, in my opinion it is still a fairly safe distance, especially since I am not too sure that Bayern Munich will be able to sweep all matches with victory. As long as they can continue to improve, in my opinion it is not impossible that Leverkusen can finally defend the title they won last season. The beginning of the season they played was not as smooth as expected, they were too late to find their best game as they showed last season. However, now they have slowly returned with a better game, and that is a breath of fresh air for them to get something better and even be able to defend the title.