fits model: Ml63, Amg, Awd. make: Mercedes. year: 2014–2016.

( Manufacturer Part Number: 1662708201 ), ( Type: Automatic Transmission ), ( Interchange: 400-62800 ), ( Ipn: W166-x166 ), ( Id: 6f1baac0-b2c3-4ac1-9857-f78b3b7cd2a6 ), ( Country Of Origin: Germany )
The **Mercedes-Benz 1662708201 Transmission Unit (2014-2016 ML 63/GL 63 AMG AWD Automatic)** is a high-performance, precision-engineered transmission designed exclusively for the legendary **ML 63/GL 63 AMG** models, embodying the pinnacle of Mercedes-Benz engineering and AMG s relentless pursuit of power and refinement. This **7-speed automatic transmission**, identified by its unique part number, is a critical component of the **AMG s 6.2L V8 biturbo engine**, delivering seamless power delivery, exceptional shift dynamics, and unmatched durability for both on-road luxury and track-focused performance. Built with Mercedes-Benz s signature **7G-Tronic Plus** technology, this transmission features advanced hydraulic and electronic controls, including a **torque converter with lock-up clutch** for optimal efficiency, as well as a **multi-plate wet clutch system** that ensures smooth, precise gear changes even under extreme loads. The robust **aluminum housing** and **high-strength steel components** are engineered to withstand the immense torque output of the **63 AMG s 621 horsepower and 630 lb-ft of torque**, making it a cornerstone of the vehicle s aggressive yet refined driving experience.
What sets this transmission apart is its **adaptive shift programming**, which continuously learns driver behavior to optimize gear selection for either spirited acceleration or fuel-efficient cruising. The **AMG-tuned calibration** ensures that power is transferred with minimal lag, allowing the **ML 63/GL 63** to surge from 0-60 mph in under **4.5 seconds** while maintaining the buttery-smooth ride quality expected from a Mercedes-Benz luxury SUV. Additionally, the transmission incorporates **advanced shift-by-wire technology**, enabling the **AMG Performance Shift** mode, where the driver can manually select gears via paddle shifters for a more engaged driving experience. Built to last, this transmission is designed for **high-mileage reliability**, with **high-capacity fluid reservoirs** and **durable synchronizers** that minimize wear even under aggressive driving conditions. Whether navigating city streets, winding mountain roads, or pushing the limits on the track, this transmission ensures that the **ML 63/GL 63 AMG** remains a benchmark for **German engineering excellence**, blending raw power with effortless sophistication.
### **Pros and Cons of Buying a 2014-2016 Mercedes-Benz ML63/GL63 AMG (W166, Chassis 2014-2016, 6.2L V8, AWD, Automatic)**
#### **Pros**
1. **Powerful Performance**
The ML63/GL63 AMG is equipped with a **6.2L naturally aspirated V8 engine** producing **469-503 hp** (depending on the model year) and **469 lb-ft of torque**. This provides strong acceleration and a thrilling driving experience, especially in its class. The **7-speed automatic transmission (7G-Tronic)** offers smooth shifts, though it can be slightly sluggish in aggressive driving scenarios.
2. **Luxury and Comfort**
Mercedes-Benz is renowned for its **premium interior**, featuring high-quality materials, ergonomic seating, and advanced sound insulation. The **ML63/GL63** retains this luxury, with options like **leather upholstery, wood/aluminum trim, and ambient lighting**. The ride is **comfortable and well-damped**, making it suitable for both highway cruising and off-road adventures (though not extreme off-roading).
3. **Strong Brand Prestige**
Owning a Mercedes-Benz AMG model carries **significant prestige**, appealing to those who value luxury and performance. The **distinctive AMG styling** (including the front grille, side skirts, and rear diffuser) makes it stand out on the road.
4. **All-Wheel Drive (AWD) Capability**
The **4MATIC AWD system** enhances traction in various conditions, improving stability in wet or snowy environments. This is particularly useful for **light off-roading or winter driving**.
5. **Tech and Safety Features**
The **2014-2016 models** come with **modern safety features** such as:- **ESP (Electronic Stability Program)**
- **Adaptive Cruise Control (DISTRONIC)**
- **Blind Spot Assist (optional)**
- **Lane Keeping Assist (optional)**
- **Parking Sensors (rear and optional front)**
- **Available navigation system with touchscreen**
- **Bluetooth connectivity and USB ports**
6. **Resale Value (Compared to Peers)**
While not as high as newer models, the **ML63/GL63 retains decent resale value** relative to competitors like the BMW X5 M or Audi S6. The **AMG badge** still commands a premium in the used market.
7. **Modification Potential**
The **6.2L V8 is a popular platform for tuning**, with aftermarket support for **intake, exhaust, and ECU tuning** to increase power further. Some owners also opt for **suspension upgrades** for a sportier feel.
8. **Spacious and Practical**
The **ML63/GL63** offers **seven seats** (with a comfortable third-row bench) and a **large cargo area**, making it practical for families or those needing extra space.
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#### **Cons**
1. **High Maintenance Costs**
Mercedes-Benz vehicles, especially AMG models, are **known for expensive repairs**. Common issues include:- **Engine oil consumption** (some owners report burning oil, requiring frequent top-ups or valve cover gasket replacements).
- **Transmission issues** (some 7G-Tronic units may develop **rough shifting or delayed engagement**, requiring costly rebuilds).
- **Electrical gremlins** (infotainment glitches, sensor failures, or wiring issues).
- **Suspension wear** (struts, bushings, and control arms may need frequent replacement).
- **Brake system failures** (some owners experience **warped rotors or failing calipers**, especially with aggressive driving).
2. **Fuel Efficiency is Poor**
The **6.2L V8 is thirsty**, with **real-world MPG ranging from 12-16 MPG combined**. This translates to **high fuel costs**, especially for long-distance driving.
3. **Reliability Concerns**
While the **ML63/GL63 is robust**, it is **not as reliable as some competitors** (e.g., BMW X5 M or Audi S6). Common complaints include:- **Oil leaks** (valve cover gaskets, oil filter housing gasket).
- **Transmission failures** (some owners report **premature wear** in the 7G-Tronic).
- **Exhaust manifold cracks** (especially on early 2014 models).
- **Suspension failures** (ball joints, sway bar links, and control arm bushings wear out quickly).
4. **Depreciation**
Luxury vehicles **lose value quickly**, and the **ML63/GL63 is no exception**. By the time it reaches **5-7 years old**, it may have already lost **40-50% of its original value**, making it a **less cost-effective long-term purchase** compared to more reliable alternatives.
5. **Noise and Vibration**
- The **V8 can be loud at highway speeds**, especially with the top down.
- Some owners report **wind noise** through the roof and **road noise** in the cabin.
- The **suspension is soft**, leading to **excessive body roll** in aggressive cornering.
6. **Complexity and Specialized Repairs**
Due to **Mercedes proprietary systems**, repairs can be **expensive and time-consuming**. Finding **qualified AMG specialists** may require **long wait times or out-of-pocket costs** for premium labor.
7. **Off-Road Limitations**
While the **4MATIC system helps**, the **ML63/GL63 is not built for extreme off-roading**. The **low range is weak**, and the **suspension is not designed for rough terrain**, making it better suited for **light trails or snow driving** rather than deep mud or rocky paths.
8. **Infotainment System Limitations**
The **early MBUX (2016) or COMAND systems** can be **glitchy and slow**, with **limited app integration** compared to modern touchscreen interfaces. Some features may **freeze or require multiple restarts**.
9. **High Purchase Price (Used Market)**
Even as a **used model**, the **ML63/GL63 remains expensive** compared to non-AMG Mercedes or competitors. A **well-maintained example** in good condition can still cost **$50,000-$70,000 **, depending on mileage and modifications.
10. **Environmental Concerns**
The **6.2L V8 is not fuel-efficient or eco-friendly**, contributing to **higher emissions and fuel costs**. If sustainability is a concern, this may not be the best choice.
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### **Conclusion**
The **2014-2016 Mercedes-Benz ML63/GL63 AMG** is a **powerful, luxurious, and capable SUV** that delivers **exceptional performance and prestige**. However, it comes with **significant drawbacks**, particularly in **reliability, maintenance costs, and fuel efficiency**.
#### **Best For:**- **Enthusiasts who prioritize power and luxury** over practicality.
- **Those who can afford high maintenance costs** and prefer a **premium brand**.
- **Owners who enjoy driving a high-performance vehicle** and are willing to **monitor and address potential issues proactively**.
- **People who value AWD capability** for light off-roading or winter driving.
#### **Not Ideal For:**- **Budget-conscious buyers** (high fuel and repair costs).
- **Those seeking long-term reliability** (better alternatives exist).
- **Families who prioritize fuel efficiency and low maintenance**.
- **Owners who plan to keep the vehicle for 10 years** (depreciation and wear will become costly).
- **Those who frequently drive on rough roads** (suspension and drivetrain may suffer).
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### **Recommendation**
If you are **financially prepared for the potential costs** and **willing to invest in maintenance**, the **ML63/GL63 AMG is an excellent choice for a thrilling, high-performance luxury SUV**. However, **buyers should:**
1. **Get a thorough pre-purchase inspection** (focus on **engine oil consumption, transmission health, suspension, and electrical systems**).
2. **Check maintenance records** (ensure **oil changes, timing belt (if applicable), and major services** were done on time).
3. **Budget for future repairs** (set aside **$1,000-$3,000/year** for potential issues).
4. **Consider alternatives** if reliability is a priority:- **BMW X5 M (F15)** More refined, better resale, but similar power.
- **Audi S6 (4F)** More reliable V8 option with better tech.
- **Porsche Cayenne Turbo S** More off-road capable, but pricier.
- **Used Lexus LX 570** More reliable luxury AWD SUV.
**Final Verdict:**The **ML63/GL63 AMG is a fantastic vehicle for the right buyer** one who **values performance over practicality and can handle the associated costs**.
Residential delivery and lift gate service at an extra charge. 2014 2016 Mercedes ML63 GL63 AMG AWD Automatic Transmission W/Tran Case OEM 70K.