MERCEDES 31759946002 Left Right Rear Seat Bolster Benz W205

( Manufacturer Part Number: 31759946002 ), ( Part Type: Seat ), ( Country Of Origin: Germany ), ( Placement On Vehicle: Left, Rear, Right )

Review MERCEDES benz Left Right Rear Seat Bolster Oem fits C300 X2 2015–2021

The **Mercedes-Benz W205 C300 (2015 2021) Left & Right Rear Seat Bolster (Part Number: 31759946002)** is a high-quality, precision-engineered component designed exclusively for the iconic third-generation C-Class sedan, ensuring a perfect fit and seamless integration into the vehicle s luxurious interior. These rear seat bolsters are crafted from durable, high-density foam and reinforced materials, engineered to provide optimal support, comfort, and structural integrity for both the driver and passengers during dynamic driving conditions. The bolsters are meticulously contoured to match the ergonomic contours of the W205 s rear seating surfaces, enhancing both the aesthetic appeal and functional performance of the cabin. Whether installed in the standard or extended rear seats, these bolsters contribute to a refined, premium feel, reinforcing the Mercedes-Benz brand s reputation for uncompromising attention to detail. Built to withstand the rigors of daily use, these components are designed to maintain their shape and resilience over time, ensuring long-term reliability and a consistently luxurious seating experience. Ideal for owners seeking to restore or upgrade their vehicle s interior, these bolsters are a must-have for maintaining the C300 s signature blend of sophistication and performance.

### **Pros and Cons of Buying a Mercedes-Benz W205 C300 (2015 2021) with Left/Right Rear Seat Bolsters (X2)**

#### **Pros**

1. **Reliability and Build Quality**

The W205 C300 is known for its robust engineering, particularly in its chassis and suspension components. Mercedes-Benz s reputation for durability in mid-size sedans means this model holds up well over time, especially if maintained properly. The M272 engine (2.0L turbocharged inline-4) is a proven unit with good longevity when serviced regularly.

2. **Comfort and Ride Quality**

The W205 offers a smooth, well-damped ride, making it ideal for daily driving. The rear seat bolsters (X2 option) enhance comfort for rear passengers by providing additional support, which is particularly useful for taller individuals or those who prefer a firmer seating position.

3. **Performance and Driving Dynamics**

The C300 delivers a balanced blend of power (245 hp) and efficiency (fuel economy around 20 25 MPG combined, depending on driving style). The turbocharged engine provides adequate acceleration without being overly aggressive. The 7G-Tronic transmission (automatic) is smooth and responsive, though some drivers prefer the manual option if available.

4. **Safety Features**

- **ESP (Electronic Stability Program)**

- **Multiple airbags (front, side, and curtain)**

- **Anti-lock brakes (ABS) with brake assist**

- **Traction control**

- **Adaptive cruise control (in later models, depending on trim)**

These features make it a safer choice compared to older Mercedes models.

5. **Resale Value**

While not as high as luxury brands like BMW or Audi, the W205 retains a decent resale value due to its reliability and popularity. The C300 is a mid-range model, so it strikes a balance between affordability and prestige.

6. **Interior Space and Practicality**

The W205 offers a spacious cabin with good rear legroom, especially with the X2 bolsters, which can make the ride more comfortable for taller passengers. The trunk is large enough for daily groceries or weekend trips, though it lacks the cargo flexibility of hatchbacks.

7. **Tech and Infotainment (in later models)**

- **MBUX infotainment system (in later years)**

- **Apple CarPlay and Android Auto (standard in newer trims)**

- **Bluetooth connectivity**

- **Ambient lighting**

While the earlier models (2015 2016) have a more basic interface, the tech improves significantly by 2018 2021.

8. **Low-Maintenance Costs (Compared to Competitors)**

The W205 is generally cheaper to maintain than high-end luxury brands like BMW or Audi. Basic services (oil changes, brake pads, etc.) are affordable, though major repairs (e.g., transmission or suspension) can be costly if not handled by a Mercedes specialist.

9. **Brand Prestige**

Owning a Mercedes-Benz, even a mid-range model like the C300, carries prestige and resale appeal. The brand s reputation for luxury and craftsmanship adds value beyond just the car s mechanical performance.

10. **Availability of Parts and Service Support**

As a discontinued model (the W205 was replaced by the W206 in 2021), parts are still widely available, and dealerships are accustomed to servicing these cars. This reduces the risk of finding rare or hard-to-source components.

---

#### **Cons**

1. **Fuel Economy Limitations**

While the C300 is efficient for a turbocharged sedan, it is not as fuel-efficient as smaller or hybrid vehicles. Expect around **20 25 MPG combined**, which may be higher than expected for a luxury car but still less efficient than competitors like the BMW 330i or Toyota Camry.

2. **Transmission Issues (7G-Tronic)**

- **Harsh shifts under load** (common in early models)

- **Occasional delayed engagement** (especially in cold weather)

- **Software glitches** (more common in pre-2018 models)

While not catastrophic, these can be annoying. Later models (2018 ) have improved transmission tuning.

3. **Maintenance Costs Can Add Up**

While generally reliable, Mercedes-Benz parts and labor are not cheap. Routine services (e.g., timing belt replacement, spark plugs, and fluid changes) should be done on schedule to avoid costly repairs. Ignoring maintenance can lead to engine or transmission problems.

4. **Depreciation**

Like most luxury cars, the W205 depreciates quickly. A 2015 2021 model will have lost a significant portion of its original value, so buying used means accepting a lower residual worth.

5. **Comfort vs. Sportiness Trade-Off**

The W205 prioritizes comfort over sportiness. While it handles well, it is not as agile or responsive as competitors like the BMW 3 Series or Audi A4. The suspension is soft, which some drivers may find too plush for spirited driving.

6. **Infotainment Lag (Early Models)**

The MBUX system in later models is excellent, but earlier versions (2015 2016) have a clunky, outdated interface. Navigation is slow, and the touchscreen can be unresponsive. Bluetooth and Apple CarPlay/Android Auto are not available on base models until 2017 .

7. **Rust and Body Issues (Higher Mileage Examples)**

Some W205s, particularly those in snowy or salted regions, develop rust on the wheel arches, lower sills, or undercarriage. A thorough inspection of the underbody is essential before purchase.

8. **Limited Power for Luxury Expectations**

At 245 hp, the C300 is not as powerful as higher-end Mercedes models (e.g., C350 with 306 hp). If you re used to more luxury performance, the C300 may feel underpowered, especially when towing or merging on highways.

9. **Noise and Wind Noise**

Some owners report increased wind noise at highway speeds, particularly in the rear seats. The cabin is generally quiet, but higher-mileage examples may have worn weatherstripping or loose panels.

10. **Discontinued Model Limited Future Support**

Since the W205 is no longer in production, long-term support (e.g., warranty extensions, official parts availability) may become harder to secure. However, this is less of an issue for used buyers since the car is already owned.

---

### **Conclusion**

The **Mercedes-Benz W205 C300 (2015 2021) with rear seat bolsters (X2)** is a **solid mid-size luxury sedan** that offers a **comfortable ride, decent reliability, and a good balance of power and efficiency**. It is best suited for **daily drivers who prioritize comfort, brand prestige, and practicality** over sportiness or cutting-edge technology.

- Buyers who want a **reliable, well-built luxury car** without the complexity of higher-end Mercedes models.

- Those who value **comfort and smooth handling** over aggressive performance.

- People who appreciate **Mercedes brand reputation** and are willing to pay for it.

- Drivers in **urban or suburban settings** where a comfortable, low-maintenance sedan is preferred.

- **Higher maintenance costs** compared to non-luxury brands.

- **Outdated tech in older models** (pre-2017).

- **Depreciation** means the car will lose value quickly.

- **Transmission quirks** in some examples (though less common in later years).

---

### **Recommendation**

You prioritize **comfort, reliability, and brand prestige** over raw performance.

You plan to **drive it gently** and keep up with **regular maintenance** (oil changes, timing belt, etc.).

You prefer a **spacious, well-built sedan** for daily use rather than a sporty or high-performance car.

You can **afford potential maintenance costs** (expect **$1,500 $3,000/year** for basic upkeep).

You want a **used luxury car with good resale value** (though not as high as BMW or Audi).

You **need a highly efficient car** (MPG is decent but not exceptional).

You **prioritize cutting-edge tech** (early models are outdated; later ones are better but still not as smooth as modern infotainment).

You **drive aggressively** (the suspension is soft, and the transmission may feel sluggish under heavy acceleration).

You **cannot afford unexpected repairs** (Mercedes parts are expensive).

You **prefer sportier handling** (the W

Details:

190,688 MILES. 7-SPEED AUTOMATIC TRANSMISSION. PARTS CAME OFF A 2015 MERCEDES BENZ C300 4MATIC. 2.0L TURBO I4 M274 ENGINE.

part #: 31759946002 prices

• $125.00-$693.89

specifications seainterio:

• for models: C300, X2
• for makes: Mercedes
• for years: 2015-2021
• mpn: 31759946002
• part type: Seat
• country of origin: Germany
• placement on vehicle: Left, Rear, Right

offer seainterio:

• options: Ship-to-home
• quantity: 1
• started: April 19, 2026
• sold: 0
• availability: In Stock

shipping seainterio:

• type: Fixed
• cost: $0.00
• transit: 3-6 Days
• class: Standard
• service: Standard

payments seainterio:

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

returns seainterio:

• policy: Returns Accepted
• paid by: Buyer
• time: 30 Days

general seainterio:

• condition: Used
• Interior Parts Accessories > Seats, Parts Accessories > Seats

seller seainterio:

• city: Anderson, South Carolina
• rating: 99.8%
• # reviews: 15508

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