MERCEDES A2129201830 Rear Seat Right Upper Bolster Cushion Benz LOT210

( Manufacturer Part Number: A2129201830 ), ( Part Type: Seat Cushion ), ( Color: Imitation Leather Black Anthracite ), ( Material: Leather ), ( Placement On Vehicle: Passenger Side, Rear, Right, Second Row )

Review MERCEDES benz Sedan Rear Seat Right Upper Bolster Cushion Lot210 Oem fits E350 W212 2010–2016

The **Mercedes-Benz A2129201830 (10-16 E350 W212 Rear Seat Right Upper Bolster Cushion, Lot 210)** is a high-quality, factory-original upholstery component designed specifically for the luxury W212 generation of the Mercedes-Benz E-Class (2010 2016 models), including the E350 variant. This meticulously crafted **rear seat right upper bolster cushion** is engineered to provide superior comfort, durability, and ergonomic support, ensuring a refined and premium driving experience. Crafted from premium materials, this bolster cushion features a structured, contoured design that enhances seating posture while maintaining the vehicle s original aesthetic integrity. The bolster s firm yet plush padding is designed to cradle the passenger s upper body, reducing fatigue during long drives and offering a tailored fit that aligns with Mercedes-Benz s signature attention to detail. Ideal for both daily commuters and discerning enthusiasts, this part is a direct replacement for the original equipment, ensuring a seamless integration with the vehicle s interior. Whether restoring a classic E-Class or maintaining one in pristine condition, this bolster cushion exemplifies Mercedes-Benz s commitment to luxury, precision engineering, and long-term reliability. Its inclusion in **Lot 210** suggests it has been carefully selected and tested for compatibility, making it a trusted choice for those seeking authenticity and performance in their vehicle s upholstery.

### **Analysis of buying a Mercedes-Benz W212 E350 (2018, VIN: A2129201830) Rear Seat Right Upper Bolster Cushion (Lot 210)**

#### **Pros**

1. **Reliability and Build Quality**

- The W212 E350 (2018 model) is part of Mercedes-Benz s E-Class, a series known for its solid construction, premium materials, and long-term durability. The 3.0L V6 biturbo engine (M276) in this model is a well-regarded powerplant with good reliability if maintained properly.

- The chassis and suspension are robust, offering a comfortable ride even on highways, though some may find it slightly firm compared to luxury competitors.

2. **Performance and Driving Dynamics**

- The E350 provides a balanced blend of power (306 hp, 300 lb-ft torque) and efficiency ( 18-20 MPG combined, depending on driving conditions). The 9G-Tronic automatic transmission is smooth and responsive, with good shift quality.

- The rear-wheel-drive layout (or optional 4MATIC all-wheel drive in some trims) enhances handling and engagement, making it more dynamic than front-wheel-drive alternatives.

- The engine bay is spacious, which can simplify maintenance and modifications if desired.

3. **Comfort and Interior Features**

- The cabin is well-insulated, reducing road noise, and the materials (leather, aluminum trim, ambient lighting) are high-quality, though some cheaper trims may use more plastic.

- Standard features include a large touchscreen infotainment system (MBUX in newer models, but this 2018 likely has the older COMAND system), Bluetooth, and available premium audio (Burmester or Bang & Olufsen).

- The rear seat is spacious, with good legroom and headroom, though the bolster cushion mentioned in the lot description may indicate some wear or a replacement part needed.

4. **Resale Value**

- Mercedes-Benz retains strong resale value, especially for well-maintained E-Class models. The E350 is less expensive than the E400 or E53 AMG variants, making it a practical choice for those seeking luxury without excessive cost.

5. **Safety**

- Pre-Safe system (airbag pre-tensioners, seat belt tensioners).

- Adaptive cruise control (DISTRONIC PLUS).

- Lane-keeping assist and blind-spot monitoring (in higher trims).

- Stability control and multiple airbags.

- Crash test ratings are excellent (IIHS Top Safety Pick in some configurations).

6. **Luxury and Brand Prestige**

- Owning a Mercedes-Benz conveys prestige and comes with the brand s reputation for craftsmanship. The E350 strikes a balance between luxury and practicality, appealing to professionals and families alike.

---

#### **Cons**

1. **Maintenance and Repair Costs**

- Mercedes-Benz vehicles are known for high maintenance and repair costs, especially compared to Japanese or Korean luxury brands. Common issues include:

- **Engine:** The M276 V6 can develop oil consumption problems over time, requiring frequent oil changes and potential valve cover gasket replacements. Some owners report carbon buildup in the intake valves, which may require a costly "valve cleaning" procedure.

- **Transmission:** While the 9G-Tronic is reliable, fluid changes are critical to prevent premature wear. Neglecting this can lead to rough shifting or failure.

- **Electronics:** The COMAND system (or MBUX in newer models) can be glitchy, and software updates may require dealer visits.

- **Parts:** Aftermarket parts are often expensive, and labor costs at dealerships are high. Independent mechanics may not have the expertise for Mercedes-specific issues.

2. **Potential Wear and Tear**

- The mention of a **"rear seat right upper bolster cushion"** in the lot description suggests that this part may be worn or damaged. Bolster cushions can degrade over time, especially in high-mileage vehicles, leading to discomfort or sagging. This could indicate other interior components (seats, headrests) may also need attention.

- Cracks in the dashboard or center console.

- Worn or peeling upholstery.

- Rust in the wheel wells or undercarriage (common in European cars due to road salt).

3. **Fuel Efficiency**

- While the E350 is more efficient than larger V8 models, it still consumes more fuel than smaller luxury cars (e.g., BMW 3 Series, Audi A4). Expect around **18-20 MPG combined**, which may be higher in city driving but lower on highways.

- Diesel alternatives (E300d) offer better fuel economy ( 25-30 MPG) but come with their own maintenance considerations (DPF, AdBlue).

4. **Depreciation**

- Luxury cars depreciate quickly. Even with strong resale value, the E350 may lose 40-50% of its value over 5-7 years. If you plan to keep it long-term, this is less of an issue, but financing may be more expensive due to lower trade-in values.

5. **Common Issues to Research**

- **Engine oil leaks** (valve cover gaskets, oil filter housing gasket).

- **Transmission fluid leaks** (common at the torque converter or transmission mounts).

- **Electrical gremlins** (e.g., malfunctioning sensors, infotainment freezes).

- **Suspension wear** (check for worn shocks, bushings, or struts).

- Run a **Carfax/AutoCheck report** to confirm accident history and service records.

6. **Competitive Alternatives**

- **BMW 530i** (more engaging to drive, but similar maintenance costs).

- **Audi A6 3.0T** (quicker, better tech, but Quattro AWD adds complexity).

- **Lexus GS 350** (more reliable, lower maintenance, but less sporty).

- If reliability is a priority, these alternatives may be worth considering.

---

#### **Conclusion**

Buying the **2018 Mercedes-Benz E350 W212 (VIN: A2129201830)** can be a rewarding experience if you prioritize luxury, driving dynamics, and long-term ownership. However, it requires careful consideration of its drawbacks, particularly the **higher maintenance costs, potential wear (e.g., bolster cushion), and common engine/transmission issues**. The vehicle s condition especially the bolster cushion suggests that a thorough inspection is critical to avoid unexpected repairs.

If the car has been **well-maintained with full service records**, particularly for oil changes and transmission fluid refreshes, it could be a solid purchase. However, if the bolster cushion is damaged or other signs of neglect are present (e.g., oil leaks, rough shifting), the cost of repairs may outweigh the benefits.

---

#### **Recommendation**

- Hire a **Mercedes-Benz specialist** or an independent mechanic to inspect the engine, transmission, suspension, and interior. Pay close attention to:

- Oil consumption (check for blue smoke on startup).

- Transmission fluid condition (should be pinkish, not burnt or dark).

- Suspension components (shocks, struts, bushings).

- Electrical systems (test all buttons, screens, and sensors).

- Ensure the car has had **regular oil changes (every 10,000 miles or as recommended)** and **transmission fluid changes (every 60,000 miles)**. A lack of service records is a red flag.

- If the PPI reveals issues (e.g., worn bolster cushion, oil leaks), use them to negotiate a lower price or request repairs before purchase.

- Buying from a **Mercedes-Benz certified pre-owned (CPO) dealer** or a reputable used luxury car lot can provide added peace of mind, though prices may be higher.

- If maintenance costs are a concern, consider a **Lexus GS 350 or BMW 530i** for better long-term reliability, or a **used E350 with a clean history** to minimize risks.

- Allocate **$1,000 $3,000 annually** for maintenance (oil changes, tires, fluids, minor repairs). Major issues (e.g., engine rebuild, transmission failure) can cost **$5,000 $10,000 **.

---

The **2018 E350 W212 is a capable and luxurious vehicle**, but it demands vigilance regarding maintenance and potential wear. If the bolster cushion issue is isolated and the rest of the car checks out, it can be a **great buy for those who value

Details:

Good condition.

part #: a2129201830 prices

• $29.75-$69.99

specifications seainterio:

• for models: E350, W212
• for makes: Mercedes
• for years: 2010-2016
• mpn: A2129201830
• part type: Seat Cushion
• color: Imitation Leather Black Anthracite
• material: Leather
• placement on vehicle: Passenger Side, Rear, Right, Second Row

payments seainterio:

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

offer seainterio:

• availability: In Stock
• best offers: True
• started: March 15, 2026
• quantity: 1
• sold: 0
• options: Ship-to-home

general seainterio:

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

shipping seainterio:

• carrier: FedEx
• service: FedEx Ground Economy
• cost: $24.99
• transit: 4-7 Days
• type: Fixed
• class: Economy

seller seainterio:

• # reviews: 172
• rating: 99.4%
• city: Cleveland, Ohio

returns seainterio:

• paid by: Buyer
• policy: Returns Accepted
• time: 14 Days

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