2023 Mercedes-Benz C-Class Maintenance & Specs

Everything you need to maintain your 2023 Mercedes-Benz C-Class — oil specs, maintenance schedule, recalls, and more.

The 2023 Mercedes-Benz C-Class takes 0W-40 Full Synthetic with a total capacity of 4.5 quarts (filter included). You’ll need a 13mm socket for the drain plug, torqued to 25 Nm. The OEM oil filter is the Mercedes A2701800109, with 3 compatible alternatives listed below. Below you’ll find complete maintenance specs, fluid capacities, parts, and links to buy what you need.

Data last verified: April 30, 2026

OEM spec: MB 229.5

Quick DIY Tips for the 2023 Mercedes-Benz C-Class

  • Torque your drain plug to 25 Nm (18 ft-lbs) to avoid leaks or stripped threads.
  • Using the OEM filter (Mercedes A2701800109) is recommended for warranty compliance.
  • Always use 0W-40 Full Synthetic as specified by Mercedes-Benz — using the wrong viscosity can void your powertrain warranty.
  • Check the maintenance schedule below for your next service interval.

Oil

Viscosity
0W-40
Oil type
Full Synthetic
Capacity (with filter)
4.5 qt
Capacity (without filter)
4.2 qt
OEM notes: MB 229.5

Drain bolt & hardware

Socket size
13 mm
Thread size
M14x1.5
Torque spec
25 Nm
Gasket type
Crush washer
Notes: W206 (2.0L M254 mild hybrid turbo I4)

Fluid specifications

Transmission Fluid

Buy →
Type
MB 236.15
Capacity
3.5 qt
Change interval
40,000 mi

Brake Fluid

Buy →
DOT type
DOT 4
Change interval
30,000 mi

Coolant

Buy →
Type
MB 325.6
Color
Blue
Capacity
7 qt
Change interval
120,000 mi

Parts & specifications

Maintenance schedule

Select a mileage interval above to see scheduled maintenance items.

Estimated Current Value

Original MSRP

$48,000

Private Party Value

$24,168 – $26,712

Dealer Retail Value

$27,984 – $31,800

Trade-In Value

$21,624 – $24,168

Depreciation

47%

Estimated values assume average condition and mileage for vehicle age.

Source: estimated

Torque specifications

lug nut
96 ft-lbs / 130.2 Nm

Lug bolts, not nuts

spark plug
13 ft-lbs / 17.6 Nm

12mm thread, aluminum head

Save by doing it yourself

A shop typically charges $90–$210 for this service. Buy the parts yourself and save.

Shop Oil & Filters →

Shop Parts for the Mercedes-Benz C-Class

Find oil, filters, and maintenance parts for the 2023 Mercedes-Benz C-Class on Amazon.

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Tools & supplies

Step-by-step guide

Detailed walkthrough with tips for first-timers.

Read guide →

How often to change oil

Intervals, severe service, and what your car needs.

Read guide →

Synthetic vs. conventional

Which oil type is right for your engine and budget.

Read guide →

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