2005 · 🇺🇸 USA · 255 hp
The first-generation Cadillac STS (2005–2011) was a rear-wheel-drive luxury sport sedan built on GM's Sigma platform, sharing architecture with the CTS and XLR. It offered a base 3.6L V6 with 255 hp or an optional Northstar 4.6L V8 with 320 hp, positioned as Cadillac's performance flagship.