MERCEDES 2700300106 Engine Crankshaft Crank Shaft X156 2.0L 270.920

( Manufacturer Part Number: 2700300106 ), ( Part Type: Engine Crankshaft Crank Shaft ), ( Miles: 81, 145 ), ( Tag: V55973 )

Review MERCEDES 2.0l Engine Crankshaft Crank Shaft fits GLA250 2015

The **Mercedes-Benz 2700300106 engine crankshaft (X156 2.0L 270.920)** is a precision-engineered component designed for the high-performance **M256 DE 20 LA** inline-four cylinder engine, which powers the **GLA-Class (W176) and GLB-Class (W177)** models from the 2015 model year onward. This crankshaft is a critical element of the engine s drivetrain, responsible for converting the linear motion of the pistons into rotational force that drives the vehicle s transmission and wheels. Crafted from high-grade **forged steel** and meticulously machined to Mercedes-Benz s exacting standards, this crankshaft features a **five-main-bearing journal design**, ensuring optimal load distribution and durability under the demanding conditions of modern automotive applications. The **270.920** designation refers to the engine s displacement and performance tuning, indicating a **2.0-liter turbocharged inline-four** with direct fuel injection, capable of producing **around 221 horsepower and 258 lb-ft of torque** in its standard configuration. The crankshaft s **counterweights** are dynamically balanced to minimize vibration, while its **fillet radii and journal surfaces** are precision-ground to reduce stress concentrations, enhancing longevity and reliability. Whether installed in a **GLA 250 (X156)** or a similarly equipped model, this crankshaft is engineered to withstand the rigors of daily driving, high-speed performance, and the thermal and mechanical stresses induced by turbocharging. Its compatibility with the **M256 engine family** which also underpins the **C204 C-Class and B204 B-Class** makes it a versatile and high-quality replacement part for enthusiasts and professionals seeking to restore or upgrade their Mercedes-Benz powertrains. Proper installation requires adherence to Mercedes-Benz service specifications, including the use of **OEM-grade bearings, seals, and lubricants**, to ensure optimal performance and prevent premature wear.

### **Pros and Cons of Buying a 2015 Mercedes-Benz GLA 250 (W156) with a 2.0L M270.920 Engine (Crankshaft Issue)**

#### **Overview**

The 2015 Mercedes-Benz GLA 250 (W156) is a compact luxury SUV powered by a 2.0L inline-4 engine (M270.920) paired with a 9G-Tronic 8-speed automatic transmission. While this model is generally reliable, it has faced some well-documented crankshaft issues, particularly with the M270.920 engine variant. Below is a detailed breakdown of the pros and cons, followed by a conclusion and recommendation.

---

### **Pros**

1. **Luxury and Comfort**

- The GLA 250 offers a refined, premium interior with high-quality materials, ergonomic seating, and advanced driver aids (adaptive cruise control, lane-keeping assist, blind-spot monitoring).

- Sound insulation and ride comfort are well above average for its class, making it suitable for daily driving and long trips.

2. **Performance and Driving Dynamics**

- The 2.0L M270.920 engine produces **184 hp (137 kW) and 258 lb-ft (350 Nm) of torque**, which is adequate for city and highway driving, though not as powerful as V6 or V8 alternatives.

- The 9G-Tronic transmission is smooth and responsive, with no major complaints about shifting (unless the crankshaft issue is severe).

- The SUV s handling is precise for its size, with good steering feel and stability.

3. **Safety Features**

- Standard equipment includes multiple airbags, electronic stability control (ESP), traction control, and advanced driver-assistance systems (depending on trim).

- The GLA has performed well in crash tests (Euro NCAP and IIHS), earning high safety ratings.

4. **Resale Value**

- Mercedes-Benz SUVs, especially the GLA, retain their value reasonably well compared to competitors like BMW X1 or Audi Q3.

- The 2015 model year is not the oldest, so parts and service support are still widely available.

5. **Tech and Infotainment**

- The MBUX infotainment system (in later models) or the MBUX-compatible system in 2015 offers a large touchscreen, Apple CarPlay, and Android Auto integration.

- Available features like **ParkPilot (automatic parking), 360-degree camera, and premium audio** enhance convenience.

6. **Reliability of Non-Crankshaft Components**

- Outside of the engine issue, the GLA 250 has few major reliability concerns. The transmission, suspension, and electrical systems are generally robust.

- The 9G-Tronic transmission is known for longevity if maintained properly.

7. **Fuel Efficiency**

- The 2.0L engine achieves ** 22-25 MPG combined** (city/highway), which is decent for a luxury SUV of its time.

- Better than V6 or diesel alternatives in terms of fuel economy.

---

### **Cons**

1. **Crankshaft Issue (M270.920 Engine)**

- **The most critical flaw** in this model is the **crankshaft defect**, where the **main bearing journal can develop a rough surface**, leading to:

- **Engine knocking or ticking noises** (especially under load or cold starts).

- **Reduced engine life** if not addressed some owners report **premature engine failure** (as early as 60,000 100,000 miles).

- **Mercedes issued a recall (2015 2017 models)** to replace the crankshaft with a revised version, but **many affected vehicles were never serviced**.

- Knocking or rattling from the engine bay.

- Increased oil consumption.

- Check Engine Light (CEL) with codes related to misfires or oil pressure.

- **Cost of repair:** Replacing the crankshaft is **expensive ( $2,500 $4,000 )** and may require labor-intensive disassembly. Some owners opt for **engine replacement ( $5,000 $7,000)**.

2. **Maintenance Costs**

- Mercedes-Benz is known for **high service and repair costs**, especially for non-warranty vehicles.

- **Oil changes, timing belt replacement (if required), and other routine maintenance** add up over time.

3. **Build Quality and Durability Concerns**

- Some owners report **plastic interior components wearing out faster** than expected (e.g., cup holders, door panels).

- **Suspension components (struts, bushings)** may wear out earlier than in competitors like BMW or Audi.

4. **Infotainment Lag and Software Issues**

- The MBUX system (or earlier MBUX-compatible systems) can be **slow to respond**, especially with multiple apps open.

- **Bluetooth connectivity issues** and occasional **software glitches** have been reported.

5. **Interior Space Limitations**

- While spacious for a compact SUV, the **trunk space is smaller than rivals** like the BMW X1 or Audi Q3.

- **Rear legroom is tight** for taller passengers.

6. **Depreciation**

- Like most Mercedes-Benz models, the GLA 250 has **depreciated significantly** since 2015. Buying used means accepting a lower residual value.

7. **Parts Availability and Scarcity**

- While still available, **some original OEM parts may become harder to find** as the model ages.

- **Aftermarket parts** are an option but may not always match the quality of genuine Mercedes components.

---

### **Conclusion**

The **2015 Mercedes-Benz GLA 250 (W156) with a 2.0L M270.920 engine** is a **capable, comfortable, and safe luxury SUV** with strong pros in terms of ride quality, interior luxury, and safety features. However, **the crankshaft issue is a major red flag** that could lead to **costly engine repairs or replacement** if not addressed early.

- **A verified crankshaft replacement** (preferably under warranty or with proof of service).

- **No history of knocking noises or oil consumption issues.**

- **A clean service record (oil changes, timing belt if applicable).**

- **A reasonable price (below $15,000 $18,000 for a 2015 model).**

then it **could be a viable purchase**, provided you budget for **potential future engine work**.

- Has **no crankshaft replacement record.**

- Shows **signs of knocking, oil leaks, or excessive wear.**

- Has **high mileage (over 100,000 miles) without proof of maintenance.**

then **it is not a recommended purchase**, as the **engine risk outweighs the benefits**.

---

### **Recommendation**

- **Get a pre-purchase inspection (PPI) from a Mercedes specialist** to check the **crankshaft condition, oil consumption, and overall engine health**.

- **Request service records** confirming a **crankshaft replacement** (if applicable) or **no history of engine issues**.

- **Avoid models with high mileage (>100K miles) without proof of maintenance.**

- **Budget for potential engine work** even if the crankshaft is fine now, **future wear is a risk**.

- **Consider a 2016 GLA 250 (W156) with the updated crankshaft** these were fixed under recall.

- **Look for a different engine variant** (e.g., **OM654 diesel** or **M256 V6**, though the V6 has its own issues).

- **Compare with competitors** like the **BMW X1 (B28 engine) or Audi Q3 (1.8T)**, which have fewer major reliability concerns.

- **Negotiate aggressively** the crankshaft risk should **lower the asking price significantly**.

- **Plan for the worst-case scenario** set aside **$3,000 $5,000** for potential engine repairs.

- **Consider a short-term lease or rental** if you re unsure about long-term ownership.

The **2015 GLA 250 with the M270.920 engine is a high-risk purchase due to the crankshaft defect**, unless you can **guarantee the engine has been properly serviced**. If you prioritize **luxury, comfort, and safety** over long-term reliability, **a well-documented example with a fixed crankshaft may be worth it**. Otherwise, **look for a newer model year or a different engine variant** to avoid costly surprises.

Details:

Left-Hand Drive Vehicles.: Item has been fully inspected and tested found to be in good working order. The pictures are the ACTUAL PICTURES OF THE ITEM FOR SALE. Made for USA Vehicles: All vehicles and parts are manufactured to be sold the market.

On return this item. There may be normal signs of wear and tear present such as scratches, scuffs, dirt, etc. SHIPPING DEALS: Review our shipping details before you purchase. After items are removed and cleaned they inspected one final time before posting.

The more actions option. We subscribe to fitment software and include all relevant useful information in our listings whenever possible. Initial testing consists of starting the vehicle, running code scans, road if safe to do so, and completing an extensive inspection checklist. And cultural preferences income levels, family sizes, typical modes of transportation, etc.

Emissions standards, side of road vehicles drive on, etc. Weather patterns cold vs.

part #: 2700300106 prices

• $108.75-$499.99

specifications cranshafengin:

• for models: Gla250
• for makes: Mercedes
• for years: 2015
• mpn: 2700300106
• part type: Engine Crankshaft Crank Shaft
• miles: 81, 145
• tag: V55973

returns cranshafengin:

• time: 60 Days
• paid by: Seller
• policy: Returns Accepted

offer cranshafengin:

• started: May 25, 2026
• quantity: 1
• options: Ship-to-home
• sold: 0
• availability: In Stock

shipping cranshafengin:

• type: Fixed
• transit: 4-8 Days
• service: Standard
• cost: $0.00
• class: Standard

general cranshafengin:

• condition: Used
• Car Truck Parts Accessories > Engines Engine Parts > Crankshafts

payments cranshafengin:

• credit card: Discover
• wallet: Google-pay
• other

seller cranshafengin:

• rating: 99.9%
• city: Oroville, California
• # reviews: 31470

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