It’s even more fun to open up the 2021 C 300 Cabriolet on Rancho Cucamonga roads. Along with its highly rigid body and delightfully nimble chassis, a new, more powerful engine unleashes 255 hp, thanks to a twin-scroll turbo and CAMTRONIC valve adjustment. The 4-wheel multilink suspension is sport-tuned for agility and precise response, and subtly lowered for stance that feels as good as it looks. Selective damping instantly firms up in corners, yet relaxes to tame Chino roads. Test drive the 2021 C-Class 300 Cabriolet at Mercedes-Benz of Ontario near Fontana.