V8 Supercars. It's all in the name. Purpose-built racing cars, based on production models, powered by V8 engines.
It's a simple formula, and one that's been incredibly successful in Australia since it was introduced in 1997. But times are changing in both the automotive and sporting worlds, and even a series with long-lasting success such as V8 Supercars isn't immune.
Put simply, that's why a radical new set of rules purposely removed from the all-V8 model are set to be introduced in 2017. In no way is a major technical reshuffle a new thing to motor racing, but in the case of V8 Supercars it's a bigger shift than it would be with almost any other series. The word V8 is literally part of the series' identity, which results in a much bigger risk on the marketing and promotion side than it would for, say, the DTM, or even Formula 1.