I admit: It took me five years rather than the conventional four to get my undergraduate degree. I took some time off for reasons that seem quaint in hindsight: I wanted to teach myself how to overhaul a VW engine and wade through James Joyce’s Ulysses. I still don’t know mechanics.
Actually, five years is downright speedy compared to the current crop of presidential candidates in Mexico.
Andres Manuel Lopez Obrador, the standard-bearer of the leftist Democratic Revolutonary Party, enrolled as a political science student at the National Autonomous University of Mexico in 1973. He got his degree in 1987, 14 years later.
Josefina Vazquez Mota of the center-right National Action Party took even longer. She enrolled in economics at the Ibero-American University in 1978 and stayed through 1983. However, her senior thesis was not accepted until 1998. So it took her two decades to graduate. See here and here.