Percy Tau opened the scoring before Themba Zwane added two outstanding goals, as South Africa had the game wrapped up in the first 40 minutes. Thapelo Maseko added a fourth in the second half to round out a fine display from the 1996 continental champions.
The result sees South Africa rise to second place on the Group E standing on three points, one behind leaders Mali, with Namibia on three points dropping back to third place, and Tunisia on one point.
The South Africans may have not enjoyed a lot of possession in the game, but their plan to catch Namibia on counterattacks worked perfectly.
Following a disappointing defeat to Mali, Bafana Bafana relied on domestic league leaders Mamelodi Sundowns to provide the bulk of a starting line-up which blew past a Namibia team fresh from their first-ever Cup of Nations win.
Former Brighton winger Tau missed a penalty in South Africa’s opener and was offered the chance for redemption in the first quarter of an hour after VAR spotted a clumsy but harsh handball by Riaan Hanamub. Tau converted his spot-kick on this occasion, hard and low into the bottom corner.
Group E finishes up on Wednesday 24 January evening as group leaders Mali take on Namibia while South Africa will play Tunisia, who sit bottom on a single point after Saturday’s 1-1 draw with Mali.