The 2018 Mercedes-Benz CLS-Class 550, part of the second generation CLS lineup (2011-2018), is a four-door coupe known for its striking, sleek design. This model year represents the final iteration before a significant redesign. It stood out with its blend of coupe aesthetics and sedan practicality, offering a luxurious and performance-oriented experience. Its popularity stemmed from its distinctive styling, powerful engine options, and the prestige associated with the Mercedes-Benz brand. Pricing for a new 2018 CLS 550 would have been in the high $70,000s to $80,000s range.
The Good
The 2018 CLS 550 excels in its breathtaking design, potent V8 performance, and opulent, comfortable cabin. It offers a compelling mix of exhilarating driving dynamics and refined luxury, appealing to both the desire for style and the need for a well-appointed daily driver.
The Bad
Owners should be aware of the CLS 550's firm ride, especially with optional sport suspensions, and the somewhat cramped rear seating due to its coupe-like roofline. The infotainment system, while advanced for its time, can feel dated compared to modern offerings.
2018 Mercedes-Benz CLS-Class 550: Quick Overview
- Engine Options: The sole engine for the 2018 CLS 550 is a 4.7-liter twin-turbocharged V8.
- Horsepower: This V8 engine produces 402 horsepower.
- Torque: It generates 443 lb-ft of torque.
- Transmission: Paired with a 9-speed automatic transmission.
- Drivetrain: Available in Rear-Wheel Drive (RWD) or 4MATIC All-Wheel Drive (AWD).
- Fuel Economy (EPA Estimated): RWD: 17 MPG city / 25 MPG highway. AWD: 16 MPG city / 24 MPG highway.
- 0-60 MPH: Approximately 4.4 seconds for RWD and 4.3 seconds for AWD.
- Towing Capacity: Not applicable; this vehicle is not designed for towing.
- Key Trim-Level Features (CLS 550):
- 18-inch alloy wheels (optional 19-inch)
- Adaptive air suspension (AIRMATIC)
- LED headlights and taillights
- Sunroof
- Keyless ignition and entry
- Power-adjustable front seats with memory and heating/ventilation
- Leather upholstery
- Dual-zone automatic climate control
- Navigation system with 8-inch display
- Bluetooth connectivity
- HD Radio
- Dual-zone automatic climate control
- Power tilt-and-telescoping steering wheel
- Ambient interior lighting
- Driver-assistance features (see prompt 7)
- Optional packages often included premium sound systems, augmented comfort features, and advanced driver aids.
2018 Mercedes-Benz CLS-Class 550 Specifications
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Vehicle History Report
What Problems Does the 2018 Mercedes-Benz CLS-Class 550 Have?
The 2018 Mercedes-Benz CLS 550, being a luxury vehicle from this era, generally exhibits good reliability, but like any car, it has some reported issues. One common area of concern for Mercedes-Benz vehicles of this generation, including the CLS, can be related to the electronic systems. Owners have occasionally reported issues with the infotainment system freezing or becoming unresponsive, requiring software updates or resets. Air suspension systems, like the standard AIRMATIC on the CLS 550, can be a source of potential problems over time, with components like air springs or compressors eventually needing replacement. This is a costly repair, so checking for any warning lights related to the suspension is crucial when buying used. The twin-turbo V8 engine is robust, but like any turbocharged engine, it can be susceptible to issues with turbocharger wear or oil leaks if maintenance has been neglected. Some owners have also noted problems with the transmission's mechatronic unit, though this is less frequent. Electrical gremlins, such as issues with sensors, power windows, or seat adjustments, can also crop up in higher mileage vehicles. It's worth noting that while specific recalls for the 2018 CLS 550 might be limited, it's always advisable to check the NHTSA website for any outstanding recalls for the specific VIN. Long-term reliability is heavily dependent on consistent and thorough maintenance. Adhering to Mercedes-Benz's recommended service intervals, using the correct fluids, and addressing minor issues promptly can significantly extend the vehicle's lifespan and minimize costly repairs down the line. The complexity of the technology also means that repairs, when needed, can be more expensive than for less sophisticated vehicles.
How long will the 2018 Mercedes-Benz CLS-Class 550 last?
With proper and diligent maintenance, a 2018 Mercedes-Benz CLS 550 can reasonably be expected to last between 150,000 to 200,000 miles, or even more. Many owners treat these vehicles as long-term companions. Durability is strong for the core powertrain and chassis components. However, the primary weaknesses over time tend to be in the complex electronic systems and the air suspension. While the V8 engine is generally stout, its longevity depends heavily on regular oil changes and avoiding prolonged overheating. The complex electrical architecture, while offering great features, can become a point of failure as components age. Owners who consistently follow the manufacturer's service schedule, use premium fluids, and address any minor electronic glitches promptly will see the greatest long-term reliability.
What Technology & Safety Features are Included?
The 2018 Mercedes-Benz CLS 550 is equipped with a sophisticated suite of technology and safety features. Standard technology includes an 8-inch infotainment display, COMAND navigation, Bluetooth connectivity for audio and hands-free calling, HD radio, and dual-zone automatic climate control. The COMAND system is controlled via a rotary dial and touchpad on the center console.
Driver-assistance and safety features were a strong suit for Mercedes-Benz. Standard equipment typically included:
Optional features significantly enhanced the CLS 550's capabilities, often bundled into packages. These could include:
Crash-test ratings for the 2018 CLS-Class are generally very good, reflecting Mercedes-Benz's commitment to safety. While specific ratings for the 550 trim might vary slightly depending on the exact configuration and testing body, the CLS-Class as a whole from this generation typically received high marks from organizations like the NHTSA and IIHS, often earning Top Safety Pick designations when equipped with specific optional driver-assistance features.
Driver-assistance and safety features were a strong suit for Mercedes-Benz. Standard equipment typically included:
- Active Brake Assist (forward collision warning with automatic emergency braking)
- Driver Attention Assist (detects driver fatigue)
- LED headlights with adaptive high beams
- A rearview camera
- Multiple airbags (front, side, knee)
- Electronic Stability Control (ESC) and Traction Control
Optional features significantly enhanced the CLS 550's capabilities, often bundled into packages. These could include:
- Distronic Plus (adaptive cruise control with steering assist)
- Active Blind Spot Assist
- Active Lane Keeping Assist
- Parking Pilot (automated parking)
- 360-degree camera system
- Burmester surround sound audio system
- Heated and ventilated front seats
- Massage function for front seats
- Panoramic sunroof
- Keyless-Go (keyless entry and ignition)
- Ambient interior lighting with multiple color choices
Crash-test ratings for the 2018 CLS-Class are generally very good, reflecting Mercedes-Benz's commitment to safety. While specific ratings for the 550 trim might vary slightly depending on the exact configuration and testing body, the CLS-Class as a whole from this generation typically received high marks from organizations like the NHTSA and IIHS, often earning Top Safety Pick designations when equipped with specific optional driver-assistance features.
What Colors Options are Available?
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2018 Mercedes-Benz CLS-Class 550 Prices and Market Value
When new, the 2018 Mercedes-Benz CLS 550 carried a Manufacturer's Suggested Retail Price (MSRP) generally starting in the high $70,000s to low $80,000s, with prices easily climbing higher with optional packages. As a luxury vehicle, it experienced significant depreciation in its initial years. Currently, used 2018 CLS 550 models typically range from the mid-$30,000s to the upper $40,000s, depending heavily on mileage, condition, and options. Factors affecting resale value include the vehicle's maintenance history, the presence of desirable optional features, overall market demand for luxury sedans, and its condition. Well-maintained examples with lower mileage and sought-after packages will command higher prices. The CLS is known for its style, which helps maintain some desirability, but the depreciation is still substantial, as expected for a luxury car of this age.
2018 Mercedes-Benz CLS-Class 550 Cost of Ownership
Owning a 2018 Mercedes-Benz CLS 550 is generally a costly endeavor. Insurance premiums will be higher than for mainstream vehicles due to its luxury status and performance. Fuel costs are substantial, with its V8 engine consuming premium unleaded fuel. Maintenance, including scheduled services at a Mercedes-Benz dealership or a qualified independent mechanic, will be significantly more expensive than average, especially for specialized services like air suspension repairs. Repair costs for complex components, electronics, and the V8 powertrain are also high. Overall, the CLS 550 is not an economical vehicle to own; it is a luxury purchase with associated premium ownership costs.
2018 Mercedes-Benz CLS-Class 550 Fuel Efficiency
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2018 Mercedes-Benz CLS-Class 550 Insurance
Insurance for a 2018 Mercedes-Benz CLS-Class 550 is moderately priced, reflecting its status as a Vehicle with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 2018 Mercedes-Benz CLS-Class 550 Compare to Other Vehicle?
The 2018 Mercedes-Benz CLS 550 competed in the premium four-door coupe segment against rivals like the Audi A7 and BMW 6 Series Gran Coupe (though the 6 Series was phasing out in 2018).
Performance: The CLS 550's 4.7L twin-turbo V8 offered robust acceleration, often outperforming rivals in straight-line speed. The Audi A7, with its supercharged V6, provided a strong, refined performance, while the BMW 6 Series Gran Coupe offered a more driver-focused experience, especially in M Sport trims.
Features: All three vehicles excelled in luxury appointments. Mercedes-Benz generally offered a more opulent interior design and extensive comfort features. Audi's MMI system was often praised for its user-friendliness, and BMW's iDrive was also a strong contender. The CLS 550 was particularly strong in advanced optional driver-assistance technologies.
Reliability: Historically, Mercedes-Benz, Audi, and BMW from this era are considered premium but can be more expensive to maintain than non-luxury brands. Long-term reliability can vary, but issues with electronics and complex systems are common across all three. The CLS 550's V8 is robust, but maintenance is key. The Audi A7, particularly with its V6, is often cited as having good reliability for its class. The BMW 6 Series, depending on the engine, can also be reliable but might have more specialized maintenance needs.
Price: The CLS 550 launched with a price point comparable to or slightly above the Audi A7 and BMW 6 Series Gran Coupe. Used prices for a 2018 CLS 550 are now in a similar bracket to comparable A7s and remaining 6 Series models.
Alternatives:
The CLS 550 stands out for its unique styling and V8 power, but rivals offer compelling packages that might be worth considering based on individual priorities.
Performance: The CLS 550's 4.7L twin-turbo V8 offered robust acceleration, often outperforming rivals in straight-line speed. The Audi A7, with its supercharged V6, provided a strong, refined performance, while the BMW 6 Series Gran Coupe offered a more driver-focused experience, especially in M Sport trims.
Features: All three vehicles excelled in luxury appointments. Mercedes-Benz generally offered a more opulent interior design and extensive comfort features. Audi's MMI system was often praised for its user-friendliness, and BMW's iDrive was also a strong contender. The CLS 550 was particularly strong in advanced optional driver-assistance technologies.
Reliability: Historically, Mercedes-Benz, Audi, and BMW from this era are considered premium but can be more expensive to maintain than non-luxury brands. Long-term reliability can vary, but issues with electronics and complex systems are common across all three. The CLS 550's V8 is robust, but maintenance is key. The Audi A7, particularly with its V6, is often cited as having good reliability for its class. The BMW 6 Series, depending on the engine, can also be reliable but might have more specialized maintenance needs.
Price: The CLS 550 launched with a price point comparable to or slightly above the Audi A7 and BMW 6 Series Gran Coupe. Used prices for a 2018 CLS 550 are now in a similar bracket to comparable A7s and remaining 6 Series models.
Alternatives:
- Audi A7 (2018): A very strong alternative, offering a sleeker design, excellent technology, and comparable performance. It's often considered a slightly more practical and potentially more reliable long-term option.
- BMW 6 Series Gran Coupe (2017/2018): If a more engaging driving dynamic is paramount, the 6 Series Gran Coupe is a great choice, though its production was winding down.
- Porsche Panamera (used): For those prioritizing ultimate driving dynamics and prestige, a used Panamera from this era could be an option, though typically at a higher price point for comparable condition and mileage.
The CLS 550 stands out for its unique styling and V8 power, but rivals offer compelling packages that might be worth considering based on individual priorities.
Final Verdict: Is the 2018 Mercedes-Benz CLS-Class 550 a Good Vehicle?
The 2018 Mercedes-Benz CLS 550 is ideal for buyers seeking a stylish, luxurious, and powerful sedan with a distinctive coupe silhouette. It appeals to those who prioritize aesthetics and a refined driving experience over absolute practicality. It is absolutely worth buying, but primarily as a used vehicle, given its significant depreciation. For buyers, a well-maintained, lower-mileage CLS 550 equipped with desirable optional packages (especially driver-assistance features) offers excellent value for a luxury V8 sedan. It is not advisable to purchase new due to the high cost and rapid depreciation. Focus on vehicles with a complete service history, and be prepared for higher-than-average maintenance and repair costs associated with luxury German engineering.
Eugene S
Eugene is an automotive enthusiast with over 15 years of experience in the used car market. As a writer at VINCheck.info, he brings deep industry insight and a passion for cars, helping readers make smart, informed decisions. Eugene has written hundreds of used car reviews and is known for breaking down complex automotive topics into clear, actionable advice. Over the years, he has driven and worked on a wide range of vehicles—starting with tuning street cars in his early days and eventually focusing on performance upgrades and reliability improvements. Today, he specializes in evaluating used vehicles through the lens of real-world ownership and enthusiast needs. A longtime fan of Porsche, Eugene especially appreciates vehicles that blend durability with driving enjoyment.