Mercedes C280 owner's manual: Engine

Published by Mercedes-Benz · pages 431–449 of 474 · Original PDF

33 discussions about the Mercedes C280

All 23 parts of the owner's manual

Technical data

Engine

Model C 230 (203.052)¹C 230 Sport (203.052)¹ C 280 (203.054)¹C 280 4MATIC (203.092)¹
Engine 272 272
Mode of operation 4-stroke engine, gasoline injection 4-stroke engine, gasoline injection
No. of cylinders 6 6
Bore 3.46 in (88.00 mm) 3.46 in (88.00 mm)
Stroke 2.69 in (68.40 mm) 3.23 in (82.10 mm)
Total piston displacement 152.3 cu in (2 496 cm³) 182.8 cu in (2 996 cm³)
Compression ratio 11.2:1 11.1:1
Output acc. to SAE J 1349 201 hp/6 200 rpm²(150 kW/6 200 rpm) 228 hp/6 000 rpm²(170 kW/6 000 rpm)
Maximum torque acc. to SAE J 1349 181 lb-ft/2700 – 5000 rpm(245 Nm/2700 – 5000 rpm) 221 lb-ft/2700 – 5000 rpm(300 Nm/2700 – 5000 rpm)
Maximum engine speed 6 500 rpm 6 500 rpm
Firing order 1-4-3-6-2-5 1-4-3-6-2-5
Poly-V-belt 2 □□□ mm 2 □□□ mm

¹ The quoted data apply only to the standard vehicle. See an authorized Mercedes-Benz Center for the corresponding data of all special bodies and special equipment.

² Premium fuel required. Performance may vary with fuel octane rating.

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Technical data

Engine

Model C 350 (203.056)¹C 350 Sport (203.056)¹C 350 4MATIC (203.087)¹
Engine 272
Mode of operation 4-stroke engine, gasoline injection
No. of cylinders 6
Bore 3.65 in (92.90 mm)
Stroke 3.38 in (86.00 mm)
Total piston displacement 213.5 cu in (3498 cm³)
Compression ratio 10.5:1
Output acc. to SAE J 1349 268 hp/6000 rpm²(200 kW/6000 rpm)
Maximum torque acc. to SAE J 1349 258 lb-ft/3000 rpm(350 Nm/3000 rpm)
Maximum engine speed 6700 rpm
Firing order 1-4-3-6-2-5
Poly-V-belt 2404 mm

¹ The quoted data apply only to the standard vehicle. See an authorized Mercedes-Benz Center for the corresponding data of all special bodies and special equipment.

² Premium fuel required. Performance may vary with fuel octane rating.

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Technical data

Rims and Tires

! Only use tires which have been tested and approved for your vehicle by Mercedes-Benz. Tires approved by Mercedes-Benz are developed to provide best possible performance in conjunction with the driving safety systems on your vehicle such as ABS or ESP®. Tires specially developed for your vehicle and tested and approved by Mercedes-Benz can be identified by finding the following on the tire's sidewall:

  • MO = Mercedes-Benz Original equipment tires
  • MOE = Mercedes-Benz Original Extended (tires with limited run-flat characteristics) original equipment tires

Using tires other than those approved by Mercedes-Benz may result in damage that is not covered by the Mercedes-Benz Limited Warranty.

i For information on driving with MOExtended tires, see "MOExtended system*" (▷ page 411).

! Using tires other than those approved by Mercedes-Benz can have detrimental effects, such as

  • poor handling characteristics
  • increased noise
  • increased fuel consumption

Moreover, tires and rims not approved by Mercedes-Benz may, under load, exhibit dimensional variations and different tire deformation characteristics that could cause them to come into contact with the vehicle body or axle parts. Damage to the tires or the vehicle may be the result.

i Further information on tires and rims is available at any authorized Mercedes-Benz Center. A placard with the recommended tire inflation pressures is located on the driver's door B-pillar. Some vehicles may have supplemental tire inflation pressure information for driving at high speeds (▷ page 315) or for vehicle loads less than the maximum loaded vehicle condition (▷ page 315). If such information is provided, it can be found on the placard located on the inside of the fuel filler flap. The tire inflation pressure should be checked regularly and should only be adjusted on cold tires. Follow tire manufacturer's maintenance recommendation included with vehicle.

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Technical data

Rims and Tires

The following pages also list the approved wheel rim and tire sizes for equipping your vehicles with winter tires. Winter tires are not available as standard or optional factory equipment, but can be purchased from an authorized Mercedes-Benz Center.

Depending on vehicle model and the standard or optional factory-equipped wheel rim/tire configuration on your vehicle (Appearance Package, Sport Package etc.), equipping your vehicle with winter tires approved for your vehicle model may also require the purchase of two or four wheel rims of the recommended size for use with these winter tires. See an authorized Mercedes-Benz Center for more information.

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Technical data

Rims and Tires

Same size tires

Model C 230¹C 280C 280 4MATICC 350C 350 4MATIC C 230 SportC 350 Sport
Rims (light alloy) 7 J x 16 H2 7.5 J x 17 H2
Wheel offset 1.22 in (31 mm) 1.42 in (36 mm)
All-season tires² 205/55 R16 91H M+S -
Summer tires² - -
Winter tires²,³ 205/55 R16 91H M+S △ 225/45 R17 91H M+S △or225/45 R17 91H M+S △ MOExtended⁴

¹ Canada only
² Radial-ply tires
³ Not available as factory equipment.
⁴ Must be used in conjunction with Run Flat Indicator* only.

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Technical data

Rims and Tires

Mixed size tires

1 Radial-ply tires 2 Must be used in conjunction with Run Flat Indicator* only. 3 Must not be used with snow chains.

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Technical data

Rims and Tires

Minispare wheel

1 Canada only 2 Must not be used with snow chains.

! Please compare the recommended tire inflation pressure for your vehicle with the tire inflation pressure on the yellow label located on the spare wheel rim.

If the tire inflation pressure on the yellow label on the spare wheel rim differs from the values given in this Operator’s Manual, inflate the Minispare wheel to the recommended tire inflation pressure given on the yellow label on the spare wheel rim.

i Please note that the tire inflation pressure of the Minispare differs from the tire inflation pressure of the road tires.

Inflate the Minispare wheel to approximately 61 psi (4.2 bar).

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Technical data

Electrical system

▼ Electrical system

437

Technical data

Main dimensions

Model C 230 C 230 Sport C 280 C 350 C 280 4MATIC C 350 4MATIC C 350 Sport
Overall vehicle length 178.4 in (4532 mm) 178.4 in (4532 mm) 178.4 in (4532 mm) 178.4 in (4532 mm)
Overall vehicle width (exterior rear view mirrors folded out) 77.8 in (1977 mm) 77.8 in (1977 mm) 77.8 in (1977 mm) 77.8 in (1977 mm)
Overall vehicle height 55.6 in (1413 mm) 56.1 in (1426 mm) 56.3 in (1429 mm) 55.5 in (1410 mm)
Wheelbase 106.9 in (2715 mm) 106.9 in (2715 mm) 106.9 in (2715 mm) 106.9 in (2715 mm)
Track, front 59.3 in (1505 mm) 59.3 in (1505 mm) 59.3 in (1505 mm) 59.3 in (1505 mm)
Track, rear 58.1 in (1476 mm) 58.1 in (1476 mm) 58.1 in (1476 mm) 58.1 in (1476 mm)

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Technical data

Weights

▼ Weights

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Technical data

Fuels, coolants, lubricants, etc.

Capacities

Vehicle components and their respective lubricants must match. Therefore only use products tested and approved by Mercedes-Benz.

Please refer to the Factory Approved Service Products pamphlet, or inquire at your Mercedes-Benz Center.

Component Model Capacity Fuels, coolants, lubricants, etc.
Engine with oil filter 8.5 US qt (8.0 l) Approved engine oils
Automatic transmission C 230 (all models) 9.0 US qt (8.5 l) MB Automatic Transmission Fluid
C 280 9.0 US qt (8.5 l)
C 350 9.0 US qt (8.5 l)
C 350 4MATIC 8.3 US qt (7.8 l)
C 350 4MATIC 8.3 US qt (7.8 l)
Manual transmission C 230 (all models) 1.3 US qt (1.2 l) MB Manual Transmission Oil
C 350 1.6 US qt (1.5 l)
Rear axle C 230 (all models) 1.0 US qt (1.0 l) Hypoid gear oil SAE 85 W 90
C 280 (all models) 1.2 US qt (1.1 l)
C 350 1.2 US qt (1.1 l)
C 350 Sport 1.2 US qt (1.1 l)
C 350 4MATIC 1.0 US qt (1.0 l)
Front axle C 280 4MATIC 0.5 US qt (0.46 l) Hypoid gear oil SAE 85 W 90
C 350 4MATIC
Transfer case C 280 4MATIC approx. 0.62 US qt MB Transfer case fluid
C 350 4MATIC (0.59 l)

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Technical data

Fuels, coolants, lubricants, etc.

Model Capacity Fuels, coolants, lubricants, etc.
Power steering approx. 1.1 US qt (1.0 l) MB Power Steering Fluid (Pentosin CHF 11S)
Front wheel hubs approx. 2.1 oz (60 g) each High temperature roller bearing grease
Brake system 0.5 US qt (0.5 l) MB Brake Fluid (DOT 4+)
Cooling system approx. 7.5 US qt (7.1 l) MB 325.0 Anticorrosion/antifreeze agent
Fuel tank including a reserve of 16.4 US gal (62.0 l)2.1 US gal (8.0 l) Premium unleaded gasoline:Minimum Posted Octane 91(Avg. of 96 RON/86 MON)
Air conditioning system R-134a refrigerant and special PAG lubricant oil (never R-12)
Windshield washer 3.2 US qt (3.0 l) MB Windshield Washer Concentrate¹
Windshield washer and headlamp cleaning system* 6.4 US qt (6.0 l)

¹ Use MB Windshield Washer Concentrate “S” and water for temperatures above freezing point or MB Windshield Washer Concentrate “S” and commercially available premixed windshield washer solvent/antifreeze for temperatures below freezing point. Follow suggested mixing ratios (▷ page 448).

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Technical data

Fuels, coolants, lubricants, etc.

Engine oils

Engine oils are specifically tested for their suitability in our engines and durability for our service intervals. Therefore, only use approved engine oils and oil filters required for vehicles with Maintenance System (U.S. vehicles) or FSS (Canada vehicles). For a listing of approved engine oils and oil filters, refer to the Factory Approved Service Products pamphlet, or contact an authorized Mercedes-Benz Center.

! Using engine oils and oil filters of specification other than those expressly required for the Maintenance System (U.S. vehicles) or FSS (Canada vehicles), or changing of oil and oil filter at change intervals longer than those called for by the Maintenance System (U.S. vehicles) or FSS (Canada Vehicles) will result in engine damage not covered by the Mercedes-Benz Limited Warranty.

Please follow Maintenance System (U.S. vehicles) or FSS (Canada vehicles) recommendations for scheduled oil changes. Failure to do so will result in engine damage not covered by the Mercedes-Benz Limited Warranty.

Engine oil additives

Do not blend oil additives with engine oil. They may damage the engine.

Damage or malfunctions resulting from blending oil additives are not covered by the Mercedes-Benz Limited Warranty.

Air conditioning refrigerant

R-134a (HFC) refrigerant and special PAG lubricating oil are used in the air conditioning system.

Never use R-12 (CFC) or mineral-based lubricating oil. Otherwise damage to the system will occur.

Brake fluid

During vehicle operation, the boiling point of the brake fluid is continuously reduced through the absorption of moisture from the atmosphere.

Warning!

Under extremely strenuous operating conditions, this moisture content can lead to the formation of bubbles in the system, thus reducing the system's efficiency.

Therefore, the brake fluid must be replaced regularly. Refer to your vehicle's Maintenance Booklet for replacement interval.

Only brake fluid approved by Mercedes-Benz is recommended. An authorized Mercedes-Benz Center will provide you with additional information.

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Technical data

Fuels, coolants, lubricants, etc.

Premium unleaded gasoline

Warning!

Gasoline is highly flammable and poisonous. It burns violently and can cause serious injury. Whenever you are around gasoline, avoid inhaling fumes and skin contact, extinguish all smoking materials. Never allow sparks, flame or smoking materials near gasoline!

! To maintain the engine’s durability and performance, premium unleaded gasoline must be used. If premium unleaded is not available and low octane fuel is used, follow these precautions:

  • Have the fuel tank only partially filled with unleaded regular and fill up with premium unleaded as soon as possible.
  • Avoid full throttle driving and abrupt acceleration.
  • Do not exceed an engine speed of 3000 rpm if the vehicle is loaded with a light load such as two persons and no luggage.
  • Do not exceed 2/3 of maximum accelerator pedal position if the vehicle is fully loaded or operating in mountainous terrain.

Gasoline additives

A major concern among engine manufacturers is carbon build-up caused by gasoline. Mercedes-Benz recommends only the use of quality gasoline containing additives that prevent the build-up of carbon deposits.

After an extended period of using fuels without such additives, carbon deposits can build up especially on the intake valves and in the combustion area, leading to engine performance problems such as:

  • Warm-up hesitation
  • Unstable idle
  • Knocking/pinging
  • Misfire
  • Power loss

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Technical data

Fuels, coolants, lubricants, etc.

In areas where carbon deposits may be encountered due to lack of availability of gasolines which contain these additives, Mercedes-Benz recommends the use of additives approved by us for use on Mercedes-Benz vehicles. Refer to Factory Approved Service Products pamphlet for a listing of approved product(s). Follow directions on product label.

Do not blend other fuel additives with fuel. This only results in unnecessary cost and may be harmful to engine operation.

Damage or malfunction resulting from poor fuel quality or from blending additional fuel additives other than those tested and approved by us for use on Mercedes-Benz vehicles listed in the Factory Approved Service Products pamphlet are not covered by the Mercedes-Benz Limited Warranty.

Fuel requirements

Only use premium unleaded fuel:

  • The octane number (posted at the pump) must be 91 min. It is an average of both the Research (R) octane number and the Motor (M) octane number: (R+M)/2. This is also known as the ANTI-KNOCK INDEX.

Unleaded gasoline containing oxygenates such as ethanol, IPA, IBA and TBA can be used provided the ratio of any one of these oxygenates to gasoline does not exceed 10%; MTBE must not exceed 15%.

The ratio of methanol to gasoline must not exceed 3% plus additional cosolvents.

Using mixtures of ethanol and methanol is not allowed. Gasohol, which contains 10% ethanol and 90% unleaded gasoline, can be used.

These blends must also meet all other fuel requirements, such as resistance to spark knock, boiling range, vapor pressure, etc.

Coolants

The engine coolant is a mixture of water and anticorrosion/antifreeze, which provides:

  • Corrosion protection
  • Freeze protection
  • Boiling protection (by increasing the boiling point)

The cooling system was filled at the factory with a coolant providing freeze protection to approximately -22°F (-30°C) and corrosion protection.

If the antifreeze mixture is effective to -22°F (-30°C), the boiling point of the coolant in the pressurized cooling system is reached at approx. 266°F (130°C).

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Technical data

Fuels, coolants, lubricants, etc.

The coolant solution must be used year-round to provide the necessary corrosion protection and increase boil-over protection. Refer to Maintenance Booklet for replacement interval.

Coolant system design and coolant used determine the replacement interval. The replacement interval published in the Maintenance Booklet is only applicable if MB 325.0 anticorrosion/antifreeze solution or other Mercedes-Benz approved products of equal specification (see Factory Approved Service Products pamphlet) are used to renew the coolant concentration or bring it back up to the proper level.

To provide important corrosion protection, the solution must be at least 45% anticorrosion/antifreeze [equivalent to freeze protection to approx. -22°F (-30°C)].

If you use a solution that is more than 55% anticorrosion/antifreeze [freeze protection to approx. -49°F (-45°C)], the engine temperature will increase due to the lower heat transfer capability of the solution. Therefore, do not use more than this amount of anticorrosion/antifreeze.

If the coolant level is low, water and MB 325.0 anticorrosion/antifreeze should be used to bring it up to the proper level (have cooling system checked for signs of leakage). Please make sure the mixture is in accordance with label instructions.

The water in the cooling system must meet minimum requirements, which are usually satisfied by normal drinking water. If you are not sure about the water quality, consult an authorized Mercedes-Benz Center.

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Technical data

Fuels, coolants, lubricants, etc

Anticorrosion/antifreeze

Your vehicle contains a number of aluminum parts. The use of aluminum components in motor vehicle engines necessitates that anticorrosion/antifreeze coolant used in such engines be specifically formulated to protect the aluminum parts.

Failure to use such anticorrosion/antifreeze coolant will result in a significantly shortened service life.

Therefore, the following product is strongly recommended for use in your vehicle: Mercedes-Benz 325.0 Anticorrosion/Antifreeze Agent.

Before the start of the winter season (or once a year in hot southern regions), you should have the anticorrosion/antifreeze concentration checked. The coolant is also regularly checked each time you bring your vehicle to an authorized Mercedes-Benz Center for service.

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Technical data

Fuels, coolants, lubricants, etc.

Anticorrosion/antifreeze quantity

Model Approx. freeze protection
-35°F (-37°C) -49°F (-45°C)
all models 3.8 US qt (3.6 l) 4.1 US qt (3.9 l)

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Technical data

Fuels, coolants, lubricants, etc.

Windshield washer and headlamp cleaning system*

Both the windshield washer and headlamp cleaning system* are supplied from the windshield washer fluid reservoir.

The washer fluid reservoir has a capacity of approx.:

• 3.2 US qt (3.0 l) in vehicles without headlamp cleaning system*

• 6.4 US qt (6.0 l) in vehicles with headlamp cleaning system*

Refill the reservoir with MB Windshield Washer Concentrate "S" and water (or concentrate and commercially available premixed windshield washer solvent/antifreeze, depending on ambient temperatures).

Warning! Washer solvent/antifreeze is highly flammable. Do not spill washer solvent/antifreeze on hot engine parts, because it may ignite and burn. You could be seriously burned.

Windshield and headlamp washer fluid mixing ratio

For temperatures above freezing point, use MB Windshield Washer Concentrate "S" and water:

• 1 part "S" to 100 parts water (1.34 fl oz [40 ml] "S" to 1 gallon [4.0 l] water)

For temperatures below freezing point, use MB Windshield Washer Concentrate "S" and commercially available premixed windshield washer solvent/antifreeze:

• 1 part "S" to 100 parts solvent (1.34 fl oz [40 ml] "S" to 1 gallon [4.0 l] solvent)

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