Cadillac’s Omega Platform Comes Into Focus: RWD XTS Successor On the Way, Long-Rumored Flagship and More Derivatives Still Being Discussed

Cadillac’s Omega Platform Comes Into Focus: RWD XTS Successor On the Way, Long-Rumored Flagship and More Derivatives Still Being Discussed:

Cadillac has done well with GM’s Sigma platform. The rear-drive architecture has served under two generations of CTS, the passable if somewhat mundane STS, and Caddy’s first crossover, the original SRX. That said, the bones were altered—some feel compromised—to accommodate the now-defunct hulk known as the Northstar V-8, and ended up being far from cost-effective. Also, unlike the majority of GM’s platforms, Sigma has a relatively limited size bandwidth, as demonstrated by the dimensional similarities between the CTS and STS, and even the STS’s long-wheelbase sibling, the Chinese-built SLS. With the STS dead, the SRX now shifted to front-wheel-drive underpinnings, and the next-generation CTS migrating to the General’s new, highly versatile, and lighter Alpha platform, Sigma’s days are numbered. Read full story »

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