Kind of. They're both based on the first generation Delta architecture, but the Cobalt had the advantage of time to make some major adjustments to the North American car. Having driven both a standard Astra and a standard Cobalt, the differences between the two aren't huge, but the Astra seems a bit more floppity. Both suffer from the dreaded electric steering box, but even having driven one of the first Cobalts to hit the streets before the re-tune, in retrospect it felt far more connected than the Saturn... Uh, Opel. However, having driven neither a VXR/OPC or an SS, all we can do is compare figures.