Mercedes C 250 2011 CDI BlueEFFICIENCY

Mercedes C class 2011 2.1 diesel description

Sedan Mercedes C 250 2011 CDI BlueEFFICIENCY has been produced from January, 2011 to January, 2013. It has four-cylinder diesel engine with displacement of 2.1 litres, which produces power of 204 horsepower on 4200 rpm and torque 500 Nm (Newton metres) on 1600 revolutions per minute.

This 4-cylinder 16-valve engine camshaft is driven by chain (What is an engine chain and belt? ). Engine has Common Rail fuel system, this is an atmospheric engine (without turbine). Engine versions compliant with Euro 5 and Euro 6 emission standards available. Engine lifespan (mileage before major repairs or overhaul) can last from 220 up to 370 thousand kilometres. Remember that engine life depends on regular maintenance and the quality of the materials used (oils, fuels, etc.).
More engine specs 
This Mercedes C class 2.1 engine oil type is 5W-30, 5W-40 and oil capacity is 7.2 litres.

Mercedes C 250 2011 CDI BlueEFFICIENCY has classical rear wheel drive (RWD) and manual gearbox with 6 gears.
Mercedes C 250 2011 CDI BlueEFFICIENCY accelerates to speed 100 kilometres per hour in 7 seconds. The maximum speed of this car is 240 km/h.

Mercedes C 250 2011 CDI BlueEFFICIENCY fuel consumption is 4.8 litres per 100km in combined city/highway mode (20.8 km/l) - this is one of most fuel efficient Mercedes C klase 2011 - 2013 versions, fuel consumption in city - 6.1 l/100km, highway fuel economy - 4 l/100km. Fuel tank capacity is 66 litres or 17.44 gallons, which gives a mileage up to 1360 kilometers without refueling in urban cycle and even up to 1640 kilometers on highway.
According to user reviews, this Mercedes real everyday fuel consumption is 6.2 litres per 100 km, which is 29% more than the manufacturer's stated. More - Real Mercedes C class fuel consumption.

Mercedes C class safety

During safety testing Mercedes C class has obtained 5 stars from five, which means very high safety level.
Adults (driver and passenger) safety of Mercedes C class is evaluated with very good rate 90 from 100, children safety: good mark - 79 from 100, for pedestrian protection Mercedes C class got 57 points from 100.
Mercedes C class safety equipment has been rated as very good - 86 percents from 100.

With the same engine there are also two other Mercedes C class versions - with automatic gearbox (Mercedes C 250 2011 CDI BlueEFFICIENCY AT), and with four wheel (4x4) drive and automatic gearbox (Mercedes C 250 2011 CDI 4Matic BlueEFFICIENCY AT 4x4) available:
  • Mercedes C 250 2011 CDI BlueEFFICIENCY AT manufacturer's fuel consumption is similar - 4.8 litres per 100 km, whereas users reported real fuel consumption is lower by 0.4 litres per 100 km or 6 % - 5.8 litres per 100 km
  • Mercedes C 250 2011 CDI 4Matic BlueEFFICIENCY AT 4x4 manufacturer's fuel consumption is higher by 1.6 litres per 100 km or 33 % - 6.4 litres per 100 km, whereas users reported real fuel consumption is higher by 1.8 litres per 100 km or 29 % - 8.0 litres per 100 km
Mercedes C class 2.1 service information and maintenance intervals Oil change intervals, capacities and specifications, service information for filters, spark plugs, belts etc.
Mercedes C class 2011

Mercedes C 250 2011 CDI BlueEFFICIENCY technical data

Model: Mercedes C 250 2011 CDI BlueEFFICIENCY
Body style: Sedan
Production period: 2011. January ... 2013. January 
Engine: 2143 cm3 Diesel, 4 cylinders CO2 emissions: 125 g/km
Power: 204 HP ON 4200 RPM Torque: 500 NM ON 1600 RPM
Gearbox: Manual gearbox (6 gears) Drive type: Rear wheel drive (RWD)
Top speed: 240 km/h Acceleration 0-100 km/h: 7.0 seconds
Fuel consumption (l/100km): 4.8 (combined) 6.1 (urban) 4.0 (highway)
Real fuel consumption: 6.2 l/100km (37.9 MPG) by user reviews from various sources
Fuel tank capacity: 66 litres (17.4 gallons)
Car dimensions: 4.59m (length) 1.77m (width) 1.45m (height)
Turning diameter: 10.8 meters
Trunk capacity: 475 litres
Gross weight: 2130 kg

Mercedes C 250 2011 CDI BlueEFFICIENCY engine OM651 220/250 CDI

Engine reliability:

Overall, this engine can last around 220,000 to 370,000 km if properly maintained, using the correct quality oil and fuel, and carrying out regular checks and maintenance.
The engine has hydraulic valve tappets (lifters), which provide quieter operation and do not require periodic adjustment, but are more complex in design and can cause serious engine damage in the event of failure.
Engine displacement 2143 cm3
Number of cylinders 4
Bore (cylinder diameter) 83 mm
Stroke length (piston move) 99 mm
Compression ratio 16.2 : 1
Camshaft drive Timing chain

Chain motors are considered more reliable, chain replacement usually is required less often than a timing belt, but they are often louder and vibrate more.

More service info
Timing chain change interval 250,000 km (recommended)

Sometimes manufacturers do not specify timing chain replacement intervals and design chains for engine life. However, once the recommended change interval has been reached, it is recommended to periodically check the condition of the chain and to change the chain if excessive stretching is detected or if unusual noises from the engine or other symptoms occur.

Fuel system Common Rail

Common rail fuel injection provides more engine power, is quieter, more environmentally friendly and offers better fuel economy, but is more expensive to maintain and repair.

Mercedes C 250 2011 CDI BlueEFFICIENCY oil type 5W-30, 5W-40
Oil capacity 7.2 litres (7.6 quarts) More service info
Power 163 - 204 HP ON 4200 RPM
Torque 350 - 500 NM ON 1600 RPM
Start of production (year) 2010
Duration of production 14 years
Engine also used on Mercedes E klase Mercedes ML Mercedes A klase and 11 other models

Generally, the use of an engine in several models and its long production run is an indication of the quality of the engine and the success of its design.

All Mercedes C class sedan [2011 - 2013] modifications

Modification Engine Power Consumption Gearbox Drive type
Mercedes C 180 2011 BlueEFFICIENCY

Most fuel efficient petrol version by real consumption

1.8 Petrol 156 HP 6.7 l/100km Manual (6) Rear wheel
Mercedes C 180 2011 BlueEFFICIENCY

Most fuel efficient petrol version

1.8 Petrol 156 HP 6.4 l/100km Automatic (7) Rear wheel
Mercedes C 200 2011 BlueEFFICIENCY 1.8 Petrol 184 HP 6.6 l/100km Manual (6) Rear wheel
Mercedes C 200 2011 BlueEFFICIENCY 1.8 Petrol 184 HP 6.5 l/100km Automatic (7) Rear wheel
Mercedes C 250 2011 BlueEFFICIENCY

Most fuel efficient petrol version

1.8 Petrol 204 HP 6.4 l/100km Automatic (7) Rear wheel
Mercedes C 180 2011 CDI BlueEFFICIENCY 2.1 Diesel 120 HP 4.8 l/100km Manual (6) Rear wheel
Mercedes C 180 2011 CDI BlueEFFICIENCY 2.1 Diesel 120 HP 4.9 l/100km Automatic (7) Rear wheel
Mercedes C 200 2011 CDI BlueEFFICIENCY 2.1 Diesel 136 HP 4.8 l/100km Manual (6) Rear wheel
Mercedes C 200 2011 CDI BlueEFFICIENCY 2.1 Diesel 136 HP 4.9 l/100km Automatic (7) Rear wheel
Mercedes C 220 2011 CDI BlueEFFICIENCY

Most fuel efficient diesel version

2.1 Diesel 170 HP 4.4 l/100km Manual (6) Rear wheel
Mercedes C 220 2011 CDI BlueEFFICIENCY 2.1 Diesel 170 HP 4.8 l/100km Automatic (7) Rear wheel
Mercedes C 250 2011 CDI BlueEFFICIENCY 2.1 Diesel 204 HP 4.8 l/100km Manual (6) Rear wheel
Mercedes C 250 2011 CDI BlueEFFICIENCY

Most fuel efficient diesel version by real consumption

2.1 Diesel 204 HP 4.8 l/100km Automatic (7) Rear wheel
Mercedes C 250 2011 CDI 4Matic BlueEFFICIENCY 4x4 2.1 Diesel 204 HP 6.4 l/100km Automatic (7) All wheel
Mercedes C 300 2011 CDI 4Matic BlueEFFICIENCY 4x4 3.0 Diesel 231 HP - Automatic (7) All wheel
Mercedes C 350 2011 CDI BlueEFFICIENCY

Most powerfull diesel version (265 HP)

3.0 Diesel 265 HP 5.9 l/100km Automatic (7) Rear wheel
Mercedes C 350 2011 BlueEFFICIENCY 3.5 Petrol 306 HP 6.8 l/100km Automatic (7) Rear wheel
Mercedes C 63 2011 AMG

Most dynamic version - 100 km/h in 4.4 seconds

6.2 Petrol 457 HP 12.0 l/100km Automatic (7) Rear wheel
Mercedes C class 2011 reviews
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