2023 Mercedes-Benz C-Class
Vehicle Specs & Maintenance Data
The 2023 Mercedes-Benz C-Class maintenance specs on this page cover the key fluids, torque values, and wear items you need for routine service. Use these numbers as a quick reference when performing oil changes, tire rotations, brake jobs, and other scheduled maintenance on your Mercedes-Benz C-Class.
For oil changes, the 2023 Mercedes-Benz C-Class takes 0W-40 Full Synthetic motor oil with a capacity of 5.5 quarts. Brake fluid type is DOT 4, the recommended coolant is MB 325.0 (Blue, silicate-free), and transmission fluid is MB 236.14. Always use the manufacturer-recommended fluids to maintain warranty coverage and engine longevity.
When mounting wheels on the Mercedes-Benz C-Class, torque the lug nuts to 96 ft-lbs using a calibrated torque wrench. Over- or under-torquing can lead to warped brake rotors or loose wheels. Re-torque after 50 to 100 miles on newly installed wheels.
Owners of the 2023 Mercedes-Benz C-Class have reported 5 common issues including "M254 Engine Turbocharger Oil Leak", "Second-Generation MBUX Software Bugs and Screen Glitches" and "Rear Axle Carrier Mounting Bolt Recall". Scroll down to the Diagnostics tab for detailed descriptions, solutions, and estimated repair costs.
Specifications on this page are compiled from multiple publicly available sources including manufacturer documentation, NHTSA data, and automotive databases. Always cross-reference with your owner's manual or official factory documentation before purchasing parts or performing any service.
The 2023 Mercedes-Benz C-Class uses 0W-40 Full Synthetic motor oil (5.5 qt capacity), requires lug nuts torqued to 96 ft-lbs, takes DOT 4 brake fluid.
Manufacturer-recommended maintenance schedule for the 2023 Mercedes-Benz C-Class. Always verify intervals against your owner's manual.
Enter a diagnostic trouble code to see causes, symptoms, and fixes for the 2023 Mercedes-Benz C-Class.
Common problems reported by 2023 Mercedes-Benz C-Class owners, with recommended fixes and estimated repair costs.
M254 Engine Turbocharger Oil Leak
The all-new 2022 W206 C-Class features the M254 2.0L four-cylinder engine with an integrated starter-generator and electric auxiliary compressor. Early production models have exhibited turbocharger oil leaks from the turbo oil return line and gasket. Symptoms include blue smoke on cold starts, an oil burning smell, and gradually declining oil levels.
Dealer replaces the turbocharger oil feed and return line gaskets. In more severe cases, the turbocharger assembly may need replacement. Mercedes-Benz released updated gasket part numbers to address the issue. Covered under powertrain warranty.
Est. Cost: $0 (warranty) - $3,200 (out of warranty turbo replacement)Second-Generation MBUX Software Bugs and Screen Glitches
The 2022 C-Class debuted the second-generation MBUX infotainment with a large portrait-oriented 11.9-inch center touchscreen. Owners report frequent software glitches including unresponsive touch inputs, navigation freezes, voice assistant misfires ('Hey Mercedes' triggers randomly), and the backup camera failing to activate when in reverse. Over-the-air updates have introduced new bugs while fixing others.
Dealer installs the latest MBUX software update. Mercedes-Benz has pushed multiple OTA updates since launch. Reference Service Campaign 2022040005 for MBUX display issues. Hard reset of the system by holding the home button for 10 seconds can provide a temporary fix.
Est. Cost: $0 (software update) - $2,500 (head unit replacement)Rear Axle Carrier Mounting Bolt Recall
Certain 2022 C 300 and C 300 4MATIC models were assembled with improperly tightened rear axle carrier mounting bolts. The bolts may loosen over time, causing the rear axle to shift, resulting in abnormal handling, rear suspension noise, and potentially loss of vehicle control. This affects the structural attachment of the rear suspension to the body.
NHTSA Recall 22V-701. Dealers inspect and retorque the rear axle carrier mounting bolts to specification, or replace the bolts if damaged. The repair is performed free of charge.
Est. Cost: $0 (recall repair)Steering Column Creaking and Clicking Noise
Owners of the 2022 C-Class report a creaking or clicking noise coming from the steering column area when turning the steering wheel, particularly at low speeds during parking maneuvers. The noise is caused by insufficient lubrication on the steering column universal joint and intermediate shaft bearing. The noise is more pronounced in cold weather.
Dealer lubricates the steering column universal joint and intermediate shaft. In persistent cases, the steering column intermediate shaft is replaced with an updated part. Reference Mercedes-Benz TSB LI46.10-P-071487 for steering column noise diagnosis.
Est. Cost: $200 - $900Fuel Pump Delivery Module Failure
The in-tank fuel pump delivery module on 2022 C-Class models can fail, causing the engine to stall while driving, experience hesitation during acceleration, or fail to start. The fuel pump impeller may deform due to a manufacturing defect, reducing fuel flow below the engine's minimum requirement. NHTSA has received multiple complaints documenting stalling in traffic.
NHTSA Recall 22V-866. Dealers replace the fuel pump delivery module with an updated unit. Owners who experienced failures before the recall was announced may be eligible for reimbursement of repair costs.
Est. Cost: $0 (recall repair)