No, not all S-Class models are equipped with a V12 engine; some use V6 or V8 engines as well.
The Mercedes-Benz S600 has a 6.0 L V12 engine.
The Mercedes S Class features a range of powerful engines, luxurious interiors with high-quality materials, advanced technology including the MBUX infotainment system, and numerous safety features such as active brake assist and lane-keeping assist.
The S-Class features a range of powerful engines, advanced technology including the MBUX infotainment system, luxurious interior materials, and cutting-edge safety features, with specifications varying by model year and trim.