MERCEDES BENZ SLK (R172) 250 CDI BlueEFICIENCY Automatic

Mercedes SLK 2011 2.1 diesel description

Cabrio MERCEDES BENZ SLK (R172) 250 CDI BlueEFICIENCY Automatic has been produced from January, 2011 to December, 2015. 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, it has no turbine. Engine versions compliant with Euro 5 and Euro 6 emission standards available. Approximate engine life expectancy (mileage until serious repairs are required) for this engine is between 220 000 and 370 000 kilometres. Remember that engine life depends on regular maintenance and the quality of the materials used (oils, fuels, etc.).
More engine specs 
This Mercedes SLK 2.1 engine oil type is 5W-30, 5W-40 and oil capacity is 7.2 litres.

MERCEDES BENZ SLK (R172) 250 CDI BlueEFICIENCY Automatic has classical rear wheel drive (RWD) and automatic gearbox with 7 gears.
MERCEDES BENZ SLK (R172) 250 CDI BlueEFICIENCY Automatic accelerates to speed 100 kilometres per hour in 6.7 seconds. The maximum speed of this car is 243 km/h.

In combined cycle (city and motorway), the MERCEDES BENZ SLK (R172) 250 CDI BlueEFICIENCY Automatic fuel consumption is 5 litres per 100km (20 km/l) - this is the most fuel efficient Mercedes SLK 2011 - 2015 version, fuel consumption in city - 6.2 l/100km, highway fuel economy - 4.3 l/100km. Fuel tank capacity is 60 litres or 15.85 gallons, which gives a mileage up to 1200 kilometers without refueling in urban cycle and even up to 1380 kilometers on highway.
According to user reviews, this Mercedes real everyday fuel consumption is 6.3 litres per 100 km, which is 26% more than the manufacturer's stated. More - Real Mercedes SLK fuel consumption.

With the same engine there is also Mercedes SLK version with manual gearbox (MERCEDES BENZ SLK (R172) 250 CDI BlueEFICIENCY MT) available, which manufacturer's fuel consumption is similar - 5.0 litres per 100 km, whereas users reported real fuel consumption is lower by 0.3 litres per 100 km or 5 % - 6.0 litres per 100 km.
Mercedes SLK 2.1 service information and maintenance intervals Oil change intervals, capacities and specifications, service information for filters, spark plugs, belts etc.
Mercedes SLK 2011

MERCEDES BENZ SLK (R172) 250 CDI BlueEFICIENCY Automatic technical data

Model: MERCEDES BENZ SLK (R172) 250 CDI BlueEFICIENCY Automatic
Body style: Cabrio
Production period: 2011. January ... 2015. December 
Engine: 2143 cm3 Diesel, 4 cylinders CO2 emissions: 128 g/km
Power: 204 HP ON 4200 RPM Torque: 500 NM ON 1600 RPM
Gearbox: Automatic gearbox (7 gears) Drive type: Rear wheel drive (RWD)
Top speed: 243 km/h Acceleration 0-100 km/h: 6.7 seconds
Fuel consumption (l/100km): 5.0 (combined) 6.2 (urban) 4.3 (highway)
Real fuel consumption: 6.3 l/100km (37.3 MPG) by user reviews from various sources
Fuel tank capacity: 60 litres (15.9 gallons)
Car dimensions: 4.14m (length) 1.81m (width) 1.30m (height)
Turning diameter: 10.5 meters
Seats: 2 seats
Trunk capacity: 224 litres
Trunk max capacity: 335 litres (with rear seats folded down)
Gross weight: 1905 kg

MERCEDES BENZ SLK (R172) 250 CDI BlueEFICIENCY Automatic 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 BENZ SLK (R172) 250 CDI BlueEFICIENCY Automatic oil type 5W-30, 5W-40
Oil capacity 7.2 litres (7.6 quarts) More service info
Coolant capacity 9.6 litres (10.1 quarts)
Power 163 - 204 HP ON 4200 RPM
Torque 350 - 500 NM ON 1600 RPM
Start of production (year) 2010
Duration of production 14 years

Often in the first years of production, engines tend to have various constructive problems, so it is recommended to choose a car with this engine from 2013 onwards.

Engine also used on Mercedes C klase Mercedes E klase Mercedes ML Mercedes A klase and 10 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 SLK cabrio [2011 - 2015] modifications

Modification Engine Power Consumption Gearbox
Mercedes SLK 1.8 200 2011 BlueEFFICIENCY

Most fuel efficient petrol version by real consumption

1.8 Petrol 184 HP 6.4 l/100km Manual (6)
Mercedes SLK 1.8 200 2011 BlueEFFICIENCY Automatic

Most fuel efficient petrol version

1.8 Petrol 184 HP 6.1 l/100km Automatic (7)
MERCEDES BENZ SLK (R172) 250 BlueEFFICIENCY 1.8 Petrol 204 HP 6.2 l/100km Automatic (7)
MERCEDES BENZ SLK (R172) 250 CDI BlueEFICIENCY

Most fuel efficient diesel version by real consumption

2.1 Diesel 204 HP 5.0 l/100km Manual (6)
MERCEDES BENZ SLK (R172) 250 CDI BlueEFICIENCY Automatic 2.1 Diesel 204 HP 5.0 l/100km Automatic (7)
MERCEDES BENZ SLK (R172) 350 BlueEFFICIENCY 3.5 Petrol 306 HP 7.1 l/100km Automatic (7)
Mercedes SLK 2012 5.5 AMG SLK 55 Jan 2012 — Dec 2015

Most dynamic version - 100 km/h in 4.6 seconds

5.5 Petrol 422 HP 8.4 l/100km Automatic (7)
Mercedes SLK 2011 reviews
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