The study investigated the relationship between timely graduation and academic and institutional factors for a cohort of Engineering students at a South African university. The sample was restricted to 1595 incoming students beginning during 2009-2011 who were tracked to 2016, allowing for an eight-year graduation period for the initial cohort. Both descriptive statistics and regression models were employed in the analysis. The results demonstrate that the characteristic profile of a student graduating on time in the Engineering programme is likely to be non-African, have high admission point scores (above 40), pass more than 75% of their credits in the first year, have financial aid and make regular use of Supplemental Instruction. In other words, students who have financial and prior academic advantages are the most likely graduates. These results suggest that universities should give serious consideration to academic support and financial aid provision.