High strength to weight ratio of the 7xxx aluminum alloys offer an exciting alternative to advanced high strength steels in automotive structural applications. Recently, Novelis has developed Advanz^TM 7000 series alloys that not only has higher strength to weight ratio but also improved localized corrosion resistance compared to conventional 7075. In this work, we have studied the effect of copper content on the stress corrosion cracking resistance of the Advanz^TM 7000 in peak-age (T6) conditions. ASTM G110 test showed pitting corrosion morphology in both low and high copper alloys compared to intergranular corrosion in 7075. Electrochemical polarization showed that increase in copper content increased the cathodic activity and pushed the free corrosion potential in noble direction. Slow strain rate tests were carried out according to ASTM G129 in ASTM D1384 solution containing hydrogen peroxide and in silicone oil. The fractured samples were subjected to scanning electron microscopy (SEM) and metallography cross section. These results indicated that the SCC cracks were initiated from the pitting corrosion sites in Advanz^TM 7000, while the intergranular corrosion site acted as crack nucleation site for 7075. The failure mechanism is discussed in terms of shift in corrosion morphology and the role of Al₇Cu₂Fe particles that had increased with the copper content of the alloys.