The 2026 Mercedes-Benz CLE 450 Coupe with 4MATIC all-wheel drive combines a 3.0-liter inline-six turbocharged engine with Mercedes' EQ Boost mild-hybrid technology. This configuration replaces the outgoing E-Class and C-Class Coupes as Mercedes' mid-size two-door offering, delivering refined performance through its integrated starter-generator system that provides additional torque and improved efficiency. The turbo inline-six with 48-volt hybrid assistance requires specific maintenance protocols for both conventional powertrain components and the electrical boost system, making accurate torque specifications and fluid capacities essential for proper service intervals.