What to Know About the 2017 Mercedes-AMG CLS63 Before Buying

For car enthusiasts searching for a high-performance luxury sedan with coupe-like styling, the 2017 Mercedes-AMG CLS63 stands out as a compelling option in the used market. Combining aggressive AMG tuning with the elegant four-door coupe design, this model delivers exhilarating power from its twin-turbo V8 engine while maintaining daily drivability. Whether you're exploring listings on Carfax, CarGurus, or Edmunds, understanding the real-world performance, reliability trends, and ownership costs is essential before making a decision ✅.

Overview of the 2017 Mercedes-AMG CLS63

The 2017 Mercedes-AMG CLS63 represents the pinnacle of the second-generation CLS-Class (C218 chassis), blending striking aesthetics with serious performance credentials. As part of the merger between AMG and Mercedes-Benz that fully integrated AMG into the brand’s lineup, the CLS63 was no longer just a modified version—it was engineered from the ground up as a true AMG model ⚙️. This generation offered two variants: the standard CLS63 and the more powerful CLS63 S, both powered by a hand-built 5.5-liter twin-turbocharged V8 engine.

Unlike earlier models that used naturally aspirated engines, the C218 CLS63 embraced forced induction to meet evolving emissions standards and deliver instant torque. With 577 horsepower in the CLS63 S and 0–60 mph times under 4 seconds, it competes directly with rivals like the BMW M6 Gran Coupe and Audi RS7. However, what sets the 2017 CLS63 apart is its balance of grand touring comfort and track-ready responsiveness—a duality that appeals to drivers who want both elegance and excitement ✨.

Engine and Performance Specifications

At the heart of the 2017 Mercedes-AMG CLS63 lies the M157 5.5L twin-turbo V8 engine, a masterpiece of German engineering known for its smoothness and brute force. In the standard CLS63, this engine produces 550 horsepower and 590 lb-ft of torque. The 'S' variant increases output to 577 horsepower and 590 lb-ft, achieved through revised turbochargers, intercoolers, and engine calibration ⚡.

Power is sent to the rear wheels via a 7-speed AMG Speedshift MCT (Multi-Clutch Transmission), which features a wet clutch system instead of a traditional torque converter. This setup allows for lightning-fast shifts and launch control functionality, enabling a 0–60 mph time of approximately 3.8 seconds in the CLS63 S. Top speed is electronically limited to 155 mph, though an optional AMG Driver’s Package can raise it to 186 mph 🏁.

Despite its muscle-car levels of acceleration, the engine remains refined at cruising speeds. Cylinder deactivation technology helps improve fuel economy during light-load driving by shutting down four cylinders, although real-world MPG still averages around 15 city / 23 highway—typical for a high-performance luxury sedan of this era.

Design and Styling: The Four-Door Coupe Legacy

The CLS-Class pioneered the modern four-door coupe segment, and the 2017 AMG version enhances that legacy with muscular flared fenders, a prominent Panamericana grille, and standard 19-inch alloy wheels. Optional 20-inch wheels further emphasize its athletic stance. LED headlights and taillights are standard, giving the car a sharp, contemporary appearance even by today’s standards 🔍.

Inside, the cabin blends premium materials like Nappa leather, carbon fiber trim, and brushed aluminum with advanced tech features. Dual 12.3-inch displays (one for instrumentation, one for infotainment) were available as part of the optional COMAND system, offering crisp graphics and intuitive controls. Heated and ventilated multi-contour front seats provide excellent support during spirited driving, while rear passengers benefit from generous legroom despite the sloping roofline.

One notable feature is the availability of the CLS63 Shooting Brake (estate/wagon) version in certain international markets, though it wasn’t officially sold in the U.S. This rare variant combines practicality with performance, appealing to collectors and enthusiasts seeking a unique alternative to the standard coupe body style 🌐.

Driving Dynamics and Handling

The 2017 CLS63 AMG isn’t just about straight-line speed; it also delivers composed handling thanks to several performance-oriented systems. Standard features include AMG-tuned air suspension, adaptive damping, and rear-biased 4MATIC all-wheel drive (available starting in later years of the C218 generation). While early C218 models were rear-wheel drive only, post-facelift versions introduced AWD as an option, improving traction in adverse weather conditions 👥.

Drivers can select from multiple drive modes—Comfort, Sport, Sport+, and Individual—that adjust throttle response, transmission behavior, steering weight, and suspension firmness. In Sport+ mode, the exhaust valves open fully, unleashing a deep, guttural roar from the quad-tipped AMG exhaust system. Many owners praise the sound quality, often citing it as one of the best among AMG V8s 🎧.

Although heavier than some competitors due to its size and equipment, the CLS63 feels agile through corners. The electric power steering provides decent feedback, though purists may prefer the hydraulic systems found in older AMGs. Braking is handled by large cross-drilled discs with 6-piston front calipers, ensuring strong stopping power even after repeated hard use.

Technology and Infotainment Features

The 2017 model year falls within the transition period for Mercedes-Benz’s user interface evolution. Most CLS63 models come equipped with the COMAND Online system, centered around a 7-inch rotating dial controller on the center console. While functional, this system predates the current MBUX interface and may feel dated compared to modern touch-centric platforms.

Key tech features include:

• Bluetooth connectivity and smartphone integration
• Navigation with real-time traffic updates
• Harman Kardon Logic 7 surround sound system (optional)
• Blind-spot monitoring, lane departure warning, and adaptive cruise control (as part of driver assistance packages)
• Wireless charging pad (available in higher trims)

While Apple CarPlay and Android Auto weren’t standard in 2017, many dealers offered retrofit solutions. Buyers should verify whether a specific vehicle has been updated with modern connectivity options, especially if seamless phone integration is important for daily use 📱.

Reliability and Common Issues

When considering a used 2017 Mercedes-AMG CLS63, potential buyers should be aware of several known mechanical and electronic concerns. While AMG models are generally well-engineered, their complexity and high-performance components can lead to costly repairs if maintenance has been neglected 🔧.

Common issues reported by owners and mechanics include:

1. Transmission shuddering – Some early MCT-equipped models experienced shudder during low-speed takeoffs, often linked to wear in the wet clutch pack. Regular fluid changes per AMG specifications can help prevent this.
2. Oil consumption – The M157 V8 is known to consume oil over time, particularly beyond 60,000 miles. Excessive oil burn could indicate worn piston rings or valve seals.
3. Air suspension failures – Air springs and compressors may fail after 70,000–100,000 miles, leading to uneven ride height or error messages. Replacement parts are expensive, so consider budgeting $1,500–$3,000 for repairs.
4. Electronic glitches – Glitches in the instrument cluster, infotainment screen freezes, or sensor malfunctions (e.g., parking sensors) are occasionally reported, often resolved with software updates.
5. Turbocharger leaks – Vacuum line deterioration can cause boost leaks, reducing performance. Inspecting hoses during pre-purchase inspection is recommended.

Regular servicing using genuine Mercedes-Benz fluids and parts is critical. Look for vehicles with complete service records, especially those maintained at authorized dealerships or reputable independent shops familiar with AMG systems.

Pricing and Market Trends for Used Models

As of 2024, the average asking price for a used 2017 Mercedes-AMG CLS63 ranges from $45,000 to $65,000, depending on mileage, condition, trim level, and geographic location. The CLS63 S typically commands a premium of $5,000–$8,000 over the base CLS63 due to increased power and additional features 📊.

Condition	Mileage Range	Average Price
Excellent (Low Mileage, Full Service History)	20,000–40,000 mi	$60,000–$65,000
Good (Average Wear, Verified Maintenance)	40,000–70,000 mi	$50,000–$58,000
Fair (High Mileage, Minor Repairs Needed)	70,000–90,000 mi	$42,000–$49,000

Sources such as Carfax, CarGurus, and Edmunds show strong inventory availability, but prices vary significantly based on region. States with lower sales taxes and milder climates (e.g., Florida, Texas) tend to have more competitive pricing and better-preserved examples. Always request a Vehicle History Report to check for accidents, title branding, or odometer discrepancies 📍.

How to Evaluate a Used 2017 CLS63 AMG

Buying a used high-performance luxury car requires diligence. Here’s a step-by-step checklist to minimize risk:

1. Review Maintenance Records: Confirm regular oil changes, transmission service, brake inspections, and software updates. Missing documentation raises red flags ❗.
2. Inspect for Rust and Body Damage: Check wheel arches, undercarriage, and door sills for corrosion, especially in northern states with road salt usage.
3. Test Drive Thoroughly: Pay attention to transmission shifts, unusual noises, steering vibration, and brake pedal feel. Engage Sport+ mode to assess engine responsiveness.
4. Scan for Error Codes: Use a professional OBD2 scanner capable of reading all modules (engine, transmission, suspension, etc.). Hidden codes may reveal pending issues.
5. Verify Warranty Status: The original 4-year/50,000-mile warranty has expired, but extended coverage may still apply if previously purchased.
6. Obtain a Pre-Purchase Inspection (PPI): Have an independent specialist—preferably one experienced with AMG vehicles—perform a comprehensive inspection. Budget $300–$500 for this service ⏱️.

Ownership Costs and Long-Term Considerations

Beyond the purchase price, owning a 2017 CLS63 AMG involves ongoing expenses. Annual maintenance can range from $800 to $1,500 for routine services, but major repairs (e.g., air suspension replacement, transmission work) can exceed $3,000. Tire costs are also significant—rear tires wear faster due to power delivery, and OEM-spec performance tires cost $300–$500 each.

Insurance premiums are higher than average due to the car’s value and performance capabilities. Younger drivers may face steep rates, so obtaining quotes before buying is advisable. Fuel costs add up quickly given the EPA rating of 17 mpg combined—expect to spend $200+ per fill-up with a 21-gallon tank 🚚.

If you plan to keep the car long-term, factor in depreciation. The CLS63 holds value reasonably well compared to mainstream sedans, but rapid advancements in EV technology and stricter emissions regulations may affect future resale demand.

Alternatives to the 2017 CLS63 AMG

Depending on your priorities, other performance sedans may offer better value or different strengths:

• BMW M5 (F10, 2012–2016): More engaging rear-wheel-drive dynamics and a naturally aspirated V10 in the M5 Competition variant.
• Audi RS7 (4K, 2014–2019): Quattro all-wheel drive, hatchback practicality, and sleek design. Later models feature mild-hybrid systems.
• Porsche Panamera GTS (970, 2014–2016): Superior handling and build quality, though less rear headroom.
• Jaguar XFR-S (2014–2015): Supercharged V8, aggressive styling, and lower purchase price, but fewer tech features.

Each alternative offers a different blend of performance, comfort, and usability. Test-driving multiple options will help clarify which aligns best with your driving style and lifestyle needs.

Frequently Asked Questions

How fast is the 2017 Mercedes-AMG CLS63?

The CLS63 S accelerates from 0 to 60 mph in about 3.8 seconds, with a top speed of 186 mph when equipped with the AMG Driver’s Package ⚡.

Is the 2017 CLS63 AMG reliable?

It's generally reliable if properly maintained, but watch for transmission shuddering, air suspension failure, and oil consumption—common issues after 60,000 miles 🔧.

Does the 2017 CLS63 have all-wheel drive?

Rear-wheel drive is standard; 4MATIC all-wheel drive became available in later model years, particularly post-facelift versions 🌍.

What is the difference between CLS63 and CLS63 S?

The 'S' model has more power (577 hp vs. 550 hp), upgraded brakes, sport suspension, and enhanced aerodynamics for improved performance ✅.

Can I use regular gas in a 2017 CLS63 AMG?

No—Mercedes recommends premium unleaded fuel (91 octane minimum) to maintain performance and prevent engine knocking ❗.