The Manchester City target wasn't told about his father-in-law and the Al Wasl manager's car crash until after the game.
Aguero was unaware of Maradona accident before Copa America game
The Argentine legend escaped with very minor injuries and which occurred just before the team's crucial Copa America group win over Costa Rica. Aguero is leading the goal-scoring charts and is a target at the transfer window for the Abu Dhabi-owned Manchester City.
"I only found out after the game. People were interviewing me and I know nothing about it. Pocho (Ezequiel) Lavezzi knew and he said 'I didn't want to tell you'" before the game.
"Just as well he didn't," Aguero told Wednesday's sports daily Ole.
"I talked to him (Maradona) afterwards - he chomped a bus," smiled Aguero, referring to the collision with a bus near his home in the Buenos Aires suburb of Ezeiza.
Neither the former star nor his partner Veronica Ojeda was hurt in the incident.
"Luckily nothing happened to him or his partner," said Aguero, who is married to Maradona's youngest daughter Giannina Maradona with whom he has a two-year-old son.