M274 Engine Mercedes : The Best Engine

Mercedes M274 Engine : Overview

The Mercedes M274 engine represents a significant evolution in automotive engineering, bringing together advanced technology and high performance. Introduced as part of Mercedes-Benz’s strategy to enhance efficiency and power, the M274 engine has become a cornerstone of the brand’s lineup. This article delves into the intricate details of the M274, highlighting its importance, history, and development within the context of modern automotive engineering.

Which Mercedes has a M274 engine?

The Mercedes-Benz M274 engine is found in several models across the brand’s lineup, typically in vehicles produced from around 2012 onwards. Here are some of the key models equipped with the M274 engine:

C-Class (W205 and W204 Facelift)

C180 (1.6L variant of the M274)
C200 (2.0L variant of the M274)
C250 (2.0L variant of the M274)

E-Class (W212 Facelift and W213)

E200 (2.0L variant of the M274)
E250 (2.0L variant of the M274)

GLC-Class (X253)

GLC 200 (2.0L variant of the M274)
GLC 250 (2.0L variant of the M274)

SLC-Class (R172)

SLC 200 (2.0L variant of the M274)
SLC 300 (2.0L variant of the M274)

SLK-Class (R172)

SLK 200 (2.0L variant of the M274)
SLK 250 (2.0L variant of the M274)

E-Class Coupe (C207 and C238)

E200 (2.0L variant of the M274)
E250 (2.0L variant of the M274)

GLK-Class (X204 Facelift)

GLK 250 (2.0L variant of the M274)

These models feature different versions of the M274 engine, with varying displacements and power outputs depending on the specific model and market. The engine is known for its balance of performance and efficiency, making it a popular choice in many of Mercedes’ compact and mid-size vehicles.

Specifications and Technical Details

The M274 engine is renowned for its impressive specifications and technical prowess. This 2.0-liter turbocharged inline-4 engine boasts a power output ranging from 154 to 208 horsepower, depending on the variant. Key features include direct fuel injection, an aluminum block and cylinder head, and a twin-scroll turbocharger, all of which contribute to its remarkable performance and efficiency. When compared to other Mercedes engines, the M274 stands out due to its blend of power, efficiency, and cutting-edge technology.

Performance and Efficiency

Performance-wise, the M274 engine delivers an exhilarating driving experience. It offers robust acceleration and high horsepower, making it suitable for a variety of driving conditions. The engine’s turbocharging technology ensures quick response and sustained power delivery. Furthermore, the M274 excels in fuel efficiency, achieving impressive mileage while maintaining low emissions. The combination of performance and efficiency makes the M274 a favorite among enthusiasts and eco-conscious drivers alike.

Is the M274 a good engine?

The Mercedes-Benz M274 engine is generally regarded as a good engine, especially for its balance of performance and efficiency. Here are some key points to consider:

Strengths:

Performance: The M274 engine is turbocharged, which provides strong performance, particularly in models like the C-Class, E-Class, and GLC. It offers a good balance of power and fuel efficiency.
Fuel Efficiency: The direct injection and turbocharging technology in the M274 contribute to improved fuel efficiency compared to older naturally aspirated engines.
Reliability: The M274 is considered more reliable than its predecessor, the M271, especially when maintained properly. Mercedes has addressed some of the timing chain and oil consumption issues that were prevalent in older engines.
Modern Technology: The engine incorporates advanced technology, such as an aluminum block, integrated exhaust manifold, and piezo injectors, making it a modern and efficient powerplant.

Common Issues and Solutions

Like any advanced engine, the M274 has its share of common issues. One of the most reported problems is related to the timing chain, which can wear prematurely and cause engine malfunctions. Oil leaks and excessive oil consumption are also common complaints among M274 owners. Turbocharger failures, though less frequent, can significantly impact performance. To address these issues, regular maintenance, timely oil changes, and vigilant monitoring of engine components are essential.

To learn about the common issues and solutions, consulte the following links;

Overall Verdict:

The M274 engine is a well-regarded, modern powerplant that offers a good mix of performance, efficiency, and reliability. However, like any engine, it requires regular maintenance and care to avoid common issues. If well-maintained, the M274 can be a durable and reliable engine choice for many Mercedes-Benz models.

What is the difference between M270 and M274?

The Mercedes-Benz M270 and M274 engines are both part of the same engine family, sharing many similarities, but they differ mainly in their applications and configurations.

Key Differences:

Application:
- M270: This engine is designed for transverse (front-wheel-drive) applications and is primarily found in models like the A-Class W176, B-Class, CLA 117, and GLA X156. It powers compact vehicles where space efficiency is crucial.
- M274: This engine is used in longitudinal (rear-wheel-drive) configurations, typically found in models like the C-Class, E-Class, GLC, and SLC. It’s designed for vehicles with rear-wheel or all-wheel drive, offering a different layout and driving dynamics.
Mounting Orientation:
- M270: Transversely mounted, meaning the engine is installed sideways in the engine bay.
- M274: Longitudinally mounted, with the engine positioned front-to-back.
Performance and Tuning:
- While both engines are available in similar displacements and turbocharged configurations, the M274 generally offers slightly higher performance outputs in certain models due to its application in more performance-oriented vehicles.

Conclusion:

The M270 and M274 engines are technically similar but are adapted for different vehicle architectures, with the M270 for transverse FWD setups and the M274 for longitudinal RWD setups.

Maintenance and Care Tips

Proper maintenance is crucial to ensuring the longevity and optimal performance of the M274 engine. Adhering to a regular maintenance schedule, which includes timely oil changes, filter replacements, and inspections, is vital. Using the recommended oil types and intervals helps maintain the engine’s health. Additionally, keeping the cooling system in top condition is important to prevent overheating. Simple tips such as regular checks of the coolant level and condition can go a long way in extending the engine’s life.

More information about the maintenance and services of M274 Engine in the following link;

Service B on Mercedes C300 : Steps DIY

How much oil does a Mercedes M274 engine take?

The Mercedes M274 engine typically requires about 6.0 to 6.5 liters (approximately 6.3 to 6.9 quarts) of engine oil for a complete oil change, including the oil filter. The exact amount can vary slightly depending on the specific model and whether the oil filter is replaced during the service.

It’s important to use the correct oil specification recommended by Mercedes-Benz, typically a full synthetic oil that meets the Mercedes-Benz MB 229.5 or MB 229.3 specification. Always refer to the vehicle’s owner manual or consult with a Mercedes-Benz service center for the exact oil capacity and specifications for your specific model and year.

Comparison with Other Engines

When compared to its predecessor, the M271, the M274 engine offers significant advancements in both performance and efficiency. The M274’s use of direct fuel injection and turbocharging technology sets it apart. Additionally, it competes favorably against engines from other manufacturers, offering a balanced mix of power and fuel economy. Looking ahead, the M274 is likely to influence the development of future Mercedes engines, continuing the brand’s legacy of innovation.

Conclusion

In summary, the Mercedes M274 engine is a remarkable feat of engineering, combining high performance with efficiency and reliability. While it does have its common issues, regular maintenance and care can mitigate these problems. Whether you are an enthusiast looking to upgrade your vehicle or a prospective buyer seeking a reliable engine, the M274 offers a compelling package. Share your experiences and insights with this engine to help others make informed decisions.