They have been doing well in ODIs, but Ganguly doesn't think that India's Test team is on the decline either.
"You need to give them some time and as I said, they have played overseas and at home in the past 10-11 years. Yes, we have had a hiccup in Australia and England but we have an opportunity this season in South Africa, New Zealand, England and Australia to improve our performance and I don't agree with the tag," Ganguly said.
Ahead of what is going to be a gruelling tour of South Africa, Ganguly had a piece of advice for Mahendra Singh Dhoni and his men.
"He (Dhoni) has been to South Africa before and he knows how tough it is. It is not going to be just a one-day combination as Test matches are a different ball game. South Africa have got a great attack, they are a very good side at home. India have to play really really well.
As discussion turned to his long-time teammate Sachin Tendulkar, Ganguly said the decision of retirement from Test cricket should be left to the Mumbaikar himself.
Asked if Tendulkar should retire after the South Africa tour, Ganguly said, "It's his decision. He has done a lot for world cricket and let him decide the time as he deserves it.