Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Mercedes-Benz C300 Fluid Capacities
OEM fluid capacity chart from the factory service manual for the 2020-2022 (2020-2022).
Quick Answer
Air Cond Compressor Oil
2.80 OZS. (0.08 L) β PAG Oil Note: Only use products recommended by Mercedes Benz. Approximate capacity.
Automatic Transmission Fluid
10.57 QTS. (10 L) β MB Automatic Transmission Fluid Note: Only use products recommended by Mercedes Benz. Approximate capacity.
Brake Fluid
β MB Brake Fluid Note: Only use products recommended by Mercedes Benz. Approximate capacity.
Engine Coolant
9.50 QTS. (8.99 L) β MB Anticorrosion/Antifreeze Note: Only use products recommended by Mercedes Benz. Approximate capacity.
Engine Oil (4Matic)
6.30 QTS. (5.96 L) β MB Approved Synthetic Engine Oil - SAE 0W-40 or 5W-40 Note: Use Mercedes-Benz approved engine oil only. See bulletin No. S-0473-08B (Mercedes-Benz Factory Approved Service Products).
Engine Oil (Base)
7.00 QTS. (6.62 L) β MB Approved Synthetic Engine Oil - SAE 0W-40 or 5W-40 Note: Use Mercedes-Benz approved engine oil only. See bulletin No. S-0473-08B (Mercedes-Benz Factory Approved Service Products).
Notes
- βOnly use products recommended by Mercedes Benz. Approximate capacity.
- βFor further details see "Air conditioner specification label". Approximate capacity.
- βUse Mercedes-Benz approved engine oil only. See bulletin No. S-0473-08B (Mercedes-Benz Factory Approved Service Products).
This vehicle's factory manual
2021 Mercedes-Benz C300: confirm the engine, trim, or drivetrain to open the available repair and diagnosis sections.
Related for Your 2021 Mercedes-Benz C300
Frequently Asked Questions
- What are the fluid capacities for a 2021 Mercedes-Benz C300?
- The 2021 Mercedes-Benz C300 fluid capacities are: Air Cond Compressor Oil: 2.80 OZS. (0.08 L) β PAG Oil Note: Only use products recommended by Mercedes Benz. Approximate capacity., Automatic Transmission Fluid: 10.57 QTS. (10 L) β MB Automatic Transmission Fluid Note: Only use products recommended by Mercedes Benz. Approximate capacity., Brake Fluid: β MB Brake Fluid Note: Only use products recommended by Mercedes Benz. Approximate capacity., Engine Coolant: 9.50 QTS. (8.99 L) β MB Anticorrosion/Antifreeze Note: Only use products recommended by Mercedes Benz. Approximate capacity., Engine Oil (4Matic): 6.30 QTS. (5.96 L) β MB Approved Synthetic Engine Oil - SAE 0W-40 or 5W-40 Note: Use Mercedes-Benz approved engine oil only. See bulletin No. S-0473-08B (Mercedes-Benz Factory Approved Service Products)., Engine Oil (Base): 7.00 QTS. (6.62 L) β MB Approved Synthetic Engine Oil - SAE 0W-40 or 5W-40 Note: Use Mercedes-Benz approved engine oil only. See bulletin No. S-0473-08B (Mercedes-Benz Factory Approved Service Products)..
- How much engine oil does a 2021 Mercedes-Benz C300 take?
- Engine oil capacity depends on the engine and whether the filter is changed. Check the applicable manual for your exact vehicle and service procedure before filling.
