1. Fuel Tanks & Filler Necks Deals
  2. sku: 23273257791361731
  3. MERCEDES S350

MERCEDES Fuel Door Filler 177.MB1Q12 Benz

fits model: S350. make: Mercedes. year: 2012.

177.mb1q12 Mercedes-benz S350 2012 Fuel Filler Door 6266944

( Part Type: Fuel Door Filler ), ( Conditions Options: 4dr, Slv ), ( Genuine Oem: Yes ), ( Ipn: 177.mb1q12 ), ( Make: Mercedes-benz ), ( Manufacturer Warranty: 6 Month )

Review MERCEDES benz Fuel Filler Door fits S350 2012

The **Mercedes-Benz 177.MB1Q12 S350 (2012) Fuel Filler Door** is a meticulously engineered component designed to seamlessly integrate with the iconic elegance and precision of the S-Class, one of the most prestigious and sophisticated luxury sedans ever produced. Crafted from high-grade, durable materials, this fuel filler door combines both form and function, embodying the brand s commitment to uncompromising quality and refined engineering. The door features a sleek, aerodynamic design with smooth, contoured lines that complement the vehicle s overall aesthetic, ensuring a seamless transition between the body panels and the functional element. Constructed with a sturdy, corrosion-resistant metal frame, it is engineered to withstand the rigors of daily use while maintaining structural integrity and longevity. The interior surface is finished with a high-quality, textured coating that resists scratches and wear, providing a polished look that aligns with the luxury interior of the S350. This component is equipped with a secure, easy-to-operate latch mechanism, ensuring a tight seal to prevent fuel vapors from escaping while also providing a satisfying tactile response when engaged or disengaged. The fuel filler door is designed to accommodate the vehicle s fuel cap with precision, allowing for a snug fit that minimizes the risk of leaks or debris entry. Additionally, it is engineered to align perfectly with the body s contours, ensuring a flush finish that enhances the car s streamlined silhouette. Whether viewed from the exterior or the interior, the fuel filler door exemplifies Mercedes-Benz s dedication to attention to detail, blending practicality with the brand s signature luxury and engineering excellence. This component is a testament to the meticulous craftsmanship that defines every aspect of the S-Class, ensuring that even the smallest elements contribute to the vehicle s legendary reputation for sophistication and reliability.

### **Pros and Cons of Buying a Mercedes-Benz S350 (W212) 2012 with a Damaged Fuel Filler Door**

#### **Pros**

1. **Strong Engine and Performance**

The S350 (W212) is powered by a 3.5-liter V6 biturbo engine producing around **306 horsepower and 369 lb-ft of torque**, delivering strong acceleration and a smooth driving experience. This engine is reliable for its class, especially when well-maintained.

2. **Luxury and Comfort**

Mercedes-Benz is renowned for its premium interior, offering high-quality materials, ergonomic seating, and advanced sound insulation. The S350 provides a comfortable ride with adaptive damping, making it suitable for both city driving and highway cruising.

3. **Technology and Features**

The 2012 model comes with modern amenities for its time, including:

- **COMAND system** (optional) for navigation, Bluetooth, and multimedia.

- **Adaptive cruise control** with stop-and-go functionality.

- **Parking sensors** (rear and optional front).

- **Leather upholstery** and climate control.

Some models may also feature **active noise cancellation** and **ambient lighting**.

4. **Resale Value**

Mercedes-Benz retains its resale value better than many competitors, though depreciation is still a factor. A well-documented S350 can still hold value reasonably well compared to other luxury sedans.

5. **Safety Features**

The W212 generation includes standard **stability control, multiple airbags, and advanced braking systems**. Some trims may have **pre-collision braking** and **lane-keeping assist**, enhancing safety.

6. **Potential for Modifications**

The S350 s engine is popular among tuners, allowing for upgrades like **turbocharger swaps, exhaust modifications, or performance tuning** to enhance power and handling.

7. **Brand Prestige**

Owning a Mercedes-Benz carries prestige, and the S350 is a well-regarded model in the luxury sedan segment. It commands respect and can be a status symbol.

---

#### **Cons**

1. **Fuel Filler Door Damage**

The most significant issue is the **damaged fuel filler door**, which can be a major concern for several reasons:

- **Security Risk**: A broken or improperly sealed fuel filler door can allow moisture, dirt, and debris into the fuel system, potentially causing **fuel contamination or corrosion**.

- **Fuel Leaks**: If the door is not properly sealed, fuel vapors may escape, leading to **fumes in the cabin** or even **leaks** if the fuel line is compromised.

- **Aesthetic and Practical Issues**: A damaged door may not close properly, making refueling inconvenient or impossible without manual adjustments.

- **Resale Impact**: Buyers may perceive this as a major flaw, significantly reducing the vehicle s appeal.

**Repair Cost**: Replacing a fuel filler door on a Mercedes-Benz can range from **$300 to $800**, depending on labor and parts. If the surrounding area is rusted or damaged, additional repairs may be needed.

2. **Maintenance and Repair Costs**

Mercedes-Benz vehicles, while luxurious, are **expensive to maintain**. Common issues include:

- **Transmission problems** (especially in automatic models, where **7G-Tronic** transmissions have had reliability concerns).

- **Electrical gremlins** (e.g., faulty sensors, infotainment glitches).

- **High replacement part costs** (e.g., spark plugs, filters, or even entire systems like the **adaptive damping**).

- **Dealer dependency** for warranty work, which can be costly if out of warranty.

3. **Depreciation**

Luxury cars depreciate rapidly. A 2012 S350 may have lost **50-60% of its original value** by now. If you plan to keep it long-term, depreciation is a factor to consider.

4. **Potential Reliability Issues**

While the **M276 V6 engine** is robust, some owners report:

- **Oil consumption** in high-mileage examples.

- **Turbocharger failures** if not maintained properly.

- **Exhaust manifold cracks** (common in V6 Mercedes).

- **Water pump failures** (especially in models with the **M276 E35 engine**).

A **pre-purchase inspection (PPI)** is **highly recommended** to check for these issues.

5. **Insurance Costs**

Luxury cars like the S350 tend to have **higher insurance premiums** due to their value and repair costs. This can be a significant ongoing expense.

6. **Fuel Efficiency Concerns**

The S350 is not known for exceptional fuel economy, typically averaging **18-22 MPG combined** (city/highway). With rising fuel costs, this can add up over time.

7. **Market Availability of Parts**

While not as critical as newer models, finding **genuine OEM parts** for a 2012 Mercedes can sometimes be challenging, though aftermarket options are widely available.

---

### **Conclusion**

The **2012 Mercedes-Benz S350 (W212) with a damaged fuel filler door** is a **luxury sedan with strong performance and comfort**, but the **fuel filler issue is a significant drawback** that must be addressed before purchasing. If repaired properly, the vehicle could be a **great choice for someone who values luxury, performance, and long-term reliability** provided they are prepared for **higher maintenance costs** and **potential hidden issues**.

However, if the **fuel filler door repair is not done correctly**, it could lead to **further mechanical problems**, reducing the car s value and usability. Additionally, the **age of the vehicle** means that **transmission, electrical, or engine issues** could arise, requiring **significant investment** in repairs.

### **Recommendation**

1. **Inspect the Fuel Filler Door Thoroughly**

- Ensure the **door mechanism is functional** and **seals properly**.

- Check for **rust or corrosion** around the filler neck, which could indicate deeper issues.

- Get a **professional estimate** for repairs before purchasing.

2. **Get a Pre-Purchase Inspection (PPI)**

- A **mechanic or Mercedes specialist** should check:

- **Engine condition** (oil leaks, turbo health, compression).

- **Transmission** (fluid condition, shifting smoothness).

- **Suspension and steering** (wear and tear on bushings, struts).

- **Electrical system** (infotainment, sensors, lights).

- **Underbody for rust** (especially in snowy or salted regions).

3. **Budget for Potential Repairs**

- If the fuel filler door is the only major issue, **repairing it is manageable**.

- If other **hidden problems** (e.g., transmission, exhaust) are found, **decide whether the cost is justified** compared to the car s value.

4. **Consider Alternative Options**

- If the **fuel filler door repair is too costly**, look for a **similar model in better condition** or a **newer (but still used) Mercedes** with fewer miles.

- Alternatively, if you **prioritize reliability over luxury**, consider a **well-maintained BMW 5 Series, Audi A6, or Lexus GS** these may have better long-term reliability records.

5. **Proceed Only If the Value Justifies the Cost**

- If the **repairs are within budget** and the **PPI reveals no major issues**, the S350 can be a **fantastic luxury sedan**.

- If the **total cost of repairs exceeds the car s worth**, it may not be a wise purchase.

### **Final Verdict**

**Buy if:**

- The **fuel filler door is repaired professionally** at a reasonable cost.

- The **PPI confirms no major mechanical issues**.

- You are **prepared for ongoing maintenance costs** and **luxury car ownership expenses**.

**Avoid if:**

- The **fuel filler door repair is too expensive** relative to the car s value.

- The **PPI reveals significant hidden problems** (transmission, engine, rust).

- You are **not comfortable with high maintenance costs** for a luxury vehicle.

For most buyers, the **S350 is a great choice if well-maintained**, but the **fuel filler door issue must be resolved first**. If you are a **luxury car enthusiast willing to invest in upkeep**, this could be an excellent purchase. Otherwise, consider alternatives with better reliability records.

Details:

Chuck and Eddies. S350 2012 Fuel Filler Door 6266944 Warranty All parts are covered by our 6 Month Money Back Guarantee.

part #: s350 price

  • $84.99

specifications fueltanksysteme:

  • for models: S350
  • for makes: Mercedes
  • for years: 2012
  • part type: Fuel Door Filler
  • conditions options: 4dr, Slv
  • genuine oem: Yes
  • ipn: 177.mb1q12
  • make: Mercedes-benz
  • manufacturer warranty: 6 Month

seller fueltanksysteme:

  • rating: 98.4%
  • city: Plantsville, Connecticut
  • # reviews: 28787

offer fueltanksysteme:

  • availability: In Stock
  • best offers: True
  • sold: 0
  • quantity: 1
  • options: Ship-to-home
  • started: March 24, 2026

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

shipping fueltanksysteme:

  • class: Expedited
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  • transit: 3-8 Days
  • service: USPS Priority Mail
  • carrier: USPS
  • type: Fixed

general fueltanksysteme:

  • Car Truck Parts Accessories > Air Fuel Delivery > Fuel Tanks Filler Necks
  • condition: Used
for models: s350, for makes: mercedes, for years: 2012, part type: fuel door filler, conditions options: 4dr, slv, genuine oem: yes, manufacturer warranty: 6 month,
manufacturer: mercedes-benz, category: auto parts > car truck parts accessories > air fuel delivery > fuel tanks filler necks, sku: 23273257791361731,
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  • Used. Offer #1 priced at $84.99 + $0.00 shipping estimate = $84.99* total. Notes: BLK,PAINT CODE - 040.FREE SHIPPING

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