Mercedes GLC 2015 GLC 350d
Mercedes GLC 2015 3.0 diesel description
Mercedes GLC 2015 GLC 350d has been produced from 2016 to 2018. It has six-cylinder diesel engine with displacement of 3.0 litres, which produces power of 258 horsepower on 3400 rpm and torque 620 Nm (Newton metres) on 1600 revolutions per minute.
This 6-cylinder 24-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 360 000 and 600 000 kilometres. Note that engine life can be longer or shorter depending on maintenance.
More engine specs
The Mercedes-Benz OM642 is a 3.0-liter V6 diesel widely used in many models under the 3.0 CDI or 350 CDI designation. It is known for strong performance and good durability when maintained properly, and well-kept engines are capable of exceeding 500,000 ...
This Mercedes GLC 3.0 engine oil type is 5W-30, MB 228.51/229.51 and oil capacity is 8.8 litres.
Mercedes GLC 2015 GLC 350d has all four wheel drive (AWD, 4x4) and automatic gearbox with 9 gears.
Mercedes GLC 2015 GLC 350d accelerates to speed 100 kilometres per hour in 6.2 seconds. The maximum speed of this car is 238 km/h.
Mercedes GLC safety
During safety testing Mercedes GLC has obtained 5 stars from five, which means very high safety level.
Adults (driver and passenger) safety of Mercedes GLC is evaluated with outstanding rate 95 from 100, children safety: very good mark - 89 from 100, for pedestrian protection Mercedes GLC got 82 points from 100.
Mercedes GLC safety equipment has been rated as good - 71 percents from 100.
Mercedes GLC 2015 GLC 350d technical data
| Model: | Mercedes GLC GLC 350d | ||
|---|---|---|---|
| Body style: | Crossover / SUV | ||
| Production period: | 2016. January ... 2018. December | ||
| Engine: | 2987 cm3 Diesel, 6 cylinders | CO2 emissions: | no data |
| Power: | 258 HP ON 3400 RPM | Torque: | 620 NM ON 1600 RPM |
| Gearbox: | Automatic gearbox (9 gears) | Drive type: | All wheel drive (AWD, 4x4) |
| Top speed: | 238 km/h | Acceleration 0-100 km/h: | 6.2 seconds |
| Fuel consumption (l/100km): | no data | ||
| Fuel tank capacity: | 66 litres (17.4 gallons) | ||
| Car dimensions: | 4.66m (length) 1.89m (width) 1.64m (height) | ||
| Turning diameter: | 11.8 meters | ||
| Ground clearance: | 123 mm (approximate, with standard suspension, unladen vehicle) | ||
| Seats: | 5 seats | ||
| Trunk capacity: | 550 litres | ||
| Trunk max capacity: | 1600 litres (with rear seats folded down) | ||
| Gross weight: | 2500 kg | ||
Mercedes GLC 2015 GLC 350d engine OM642 350 CDI
Engine reliability and common problems:
The Mercedes-Benz OM642 is a 3.0-liter V6 diesel widely used in many models under the 3.0 CDI or 350 CDI designation. It is known for strong performance and good durability when maintained properly, and well-kept engines are capable of exceeding 500,000 km. At the same time, the unit has several characteristic weak points that tend to appear with age.One of the most well-known problems affects early engines produced before around 2010. The oil cooler sits deep in the valley of the V-engine, and the sealing gaskets eventually harden and begin to leak. When this happens, oil accumulates in the center of the engine block, and fixing the issue requires significant disassembly, making the repair relatively expensive.
The intake system can also cause trouble. The swirl flaps are operated by plastic linkages that may break over time, which leads to uneven engine operation, warning lights, and reduced power. The Bosch fuel system itself is generally efficient, but the piezo injectors are sensitive to fuel quality and are expensive to replace, often with little possibility of repair.
Turbocharger problems sometimes appear as mileage grows. Carbon deposits may cause the variable geometry mechanism to stick, and in some cases particles from a deteriorating exhaust manifold can damage the turbocharger. The engine is also quite sensitive to oil pressure. Issues with the oil pump, contaminated oil, or overheating can lead to bearing damage if lubrication becomes insufficient.
Additional concerns include the crankcase ventilation system, where the membrane inside the PCV valve may fail, as well as typical diesel emissions components such as the EGR valve and diesel particulate filter, which can become clogged over time.
Despite these weaknesses, the OM642 remains a respected engine when serviced correctly. It delivers strong performance, uses a durable double-row timing chain, and the cylinder heads are equipped with hydraulic lifters that reduce maintenance needs. With regular oil changes—preferably every 10,000 km or sooner—and good-quality fuel, it can be a long-lasting and capable diesel engine.
Overall, this engine can last around 360,000 to 600,000 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 | 2987 cm3 |
|---|---|
| Number of cylinders | 6 |
| Bore (cylinder diameter) | 83 mm |
| Stroke length (piston move) | 92 mm |
| Compression ratio | 18 : 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 | 400,000 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 GLC 2015 GLC 350d oil type | 5W-30, MB 228.51/229.51 |
| Oil capacity | 8.8 litres (9.3 quarts) More service info |
| Coolant capacity | 10 litres (10.6 quarts) |
| Power | 231 - 265 HP ON 3400 RPM |
| Torque | 540 - 620 NM ON 1600 RPM |
| Start of production (year) | 2005 |
| Duration of production | 21 years |
| Engine also used on | Mercedes C klase Mercedes E klase Mercedes ML Mercedes S klase and 5 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 GLC crossover [2015 - 2019] modifications
| Modification | Engine | Power | Consumption |
|---|---|---|---|
|
Mercedes GLC 2.0 250 2015 4MATIC 4x4
Jan 2015 — Jan 2019 Most fuel efficient petrol version |
2.0 Petrol | 211 HP | 7.1 l/100km |
|
Mercedes GLC 2.0 300 2015 4MATIC 4x4
Jan 2015 — Jan 2019 Most fuel efficient petrol version by real consumption |
2.0 Petrol | 245 HP | - |
| Mercedes GLC 2016 2.0 GLC 350e 4x4 Jan 2016 — Dec 2018 | 2.0 Hybrid | 211 HP | - |
|
Mercedes GLC 2.1 220 2015 d 4MATIC 4x4
Jan 2015 — Jan 2019 Most fuel efficient diesel version by real consumption |
2.1 Diesel | 170 HP | 5.5 l/100km |
| Mercedes GLC 2.1 250 2015 d 4MATIC 4x4 Jan 2015 — Jan 2019 | 2.1 Diesel | 204 HP | 5.5 l/100km |
| Mercedes GLC 2016 3.0 AMG GLC 43 4x4 Jan 2016 — Dec 2019 | 3.0 Petrol | 367 HP | - |
|
Mercedes GLC 2016 3.0 GLC 350d 4x4
Jan 2016 — Dec 2018 Most powerfull diesel version (258 HP) |
3.0 Diesel | 258 HP | - |
| Mercedes GLC 2017 4.0 AMG GLC 63 4x4 Jan 2017 — Dec 2019 | 4.0 Petrol | 476 HP | - |
|
Mercedes GLC 2017 4.0 AMG GLC 63 S 4x4
Jan 2017 — Dec 2019 Most dynamic version - 100 km/h in 3.8 seconds |
4.0 Petrol | 510 HP | 10.7 l/100km |