2020 Mercedes-Benz C300 Service and Repair Manual

This factory service and repair manual for the 2020 Mercedes-Benz C300 covers a turbocharged 2.0L gasoline inline-four with dual overhead cams, the only engine listed. Around it come four bodies, the four-door wagon and sedan and the two-door coupe and convertible, and four trims: Base, 4Matic, Coupe and Sport. Specifications, torque values and wiring diagrams are given for engine work and body electrical repairs.

Engines covered

• 2.0L inline-four — DOHC, turbocharged, gasoline

Body styles covered

• 4-door wagon
• 2-door convertible
• 4-door sedan
• 2-door coupe

Trims covered

• Base
• 4Matic
• Coupe
• Sport

Known issues on the 2020 C300. Nine recalls name the 2020 C300. Among them are two emergency-call faults: on certain vehicles a SIM card software error could drop the mobile connection eCall needs, and on certain others the module's software could send responders the wrong location after a crash. Certain cars had LED headlights set wrong during service, and certain vehicles with a panoramic sunroof may have a poorly bonded front roof panel left by an earlier repair. Owners logged 29 complaints, led by the engine (7), structure (4) and the electrical system (3); 5 of them reported a crash and 4 an injury. Telematics wiring diagrams, lighting procedures and engine specifications are included.