2020 Mercedes-Benz Metris: Coolant Capacity & Type
AI-generated reference. Always verify torque values, fluid capacities, intervals, and procedures against the manufacturer's service manual or OEM repair information before performing work. Repairius is not liable for damage from acting on this content without verification.
Working on this 2020 Mercedes-Benz Metris? Run just this one job through Repairius.
No big switch. Write the estimate, text it for approval, and get paid on your phone. Keep everything else the way it is.
14-day free trial · credit card required · cancel anytime
The 2020 Mercedes-Benz Metris with the 2.0L M274 engine holds approximately 9.5 to 10.5 quarts (9.0 to 10.0 liters) of coolant.
Quick Answer
- Total Capacity: 9.5 - 10.5 quarts (9.0 - 10.0 liters)
- OEM Coolant Spec: Blue, Silicate Hybrid Organic Acid Technology (Si-OAT), Mercedes-Benz Spec 325.6 or 326.6
- Mix Ratio: 50/50 mix of coolant and distilled water (pre-mixed is recommended)
Capacity by Engine Option
All 2020 Mercedes-Benz Metris vans sold in North America are equipped with the same engine, so there is only one cooling system capacity.
| Engine | Capacity (Quarts) | Capacity (Liters) |
|---|---|---|
| 2.0L M274 Turbo I-4 | 9.5 - 10.5 | 9.0 - 10.0 |
Flush Interval
It is crucial to follow the manufacturer's recommended service intervals to maintain the integrity of the cooling system and prevent corrosion.
- Normal Service: Mercedes-Benz recommends replacing the coolant every 15 years or 150,000 miles, whichever comes first.
- Severe Duty: If the vehicle is used for heavy towing, frequent short trips, or in extreme temperatures, it is advisable to inspect the coolant more frequently and consider a shorter change interval.
How to Refill & Bleed
The M274 engine in the Metris has a self-bleeding cooling system, but using a vacuum-fill tool is the recommended and most efficient method to prevent air pockets.
- Ensure the engine is cool. Never open the cooling system when it is hot.
- Drain the system by opening the radiator petcock and any engine block drains.
- Close the drains.
- Use a vacuum-fill tool attached to the coolant expansion tank. This will pull the system into a deep vacuum, which removes all air.
- Refill the system with the 50/50 pre-mixed coolant through the vacuum tool. The vacuum will draw the coolant into the system without creating air pockets.
- Start the engine with the heater on high and let it run until it reaches operating temperature to ensure any remaining air is expelled.
- Top off the expansion tank to the correct level once the vehicle has cooled down.
Common Cooling System Issues
The Mercedes-Benz Metris (W447) is generally reliable, but some common issues can affect the cooling system.
- Water Pump Leaks: The water pump is a known failure point on many modern engines. Look for signs of coolant leaks (blue residue) around the pump pulley and housing.
- Thermostat Failure: A failing thermostat can stick open (causing the engine to run too cool and have poor heater performance) or stick closed (leading to rapid overheating).
- Coolant Hoses: With time and heat cycles, rubber hoses can become brittle and crack, leading to leaks. It's good practice to inspect hoses during any service.
- Expansion Tank Cracks: The plastic expansion tank can develop hairline cracks over time, leading to slow coolant loss and a drop in pressure.
Find a trusted shop on Repairius.
More specs for the 2020 Mercedes-Benz Metris
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Fuse Box Diagram & Amperage
Fuse box locations, layout, amps, and what each fuse controls.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2020 Mercedes-Benz Metris Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
Browse by make
Running an auto or diesel repair shop?
Compare Repairius to the shop software you're paying for
$99.99/month (first location included), unlimited users, 14-day free trial.