Q

Is the 2018 CLS a good used car to buy?

The 2018 CLS makes for a compelling used luxury coupe that still holds up well today. It carries forward Mercedes' signature elegant design – the frameless doors and fastback silhouette remain head-turners. Under the hood, the 3.0T V6 turbo packs plenty of punch, paired beautifully with the buttery-smooth 9-speed gearbox while delivering reasonable fuel economy for its class. The cabin feels slightly tighter than traditional sedans, but typical Mercedes craftsmanship shines through with premium materials. The COMMAND infotainment isn't the latest generation but covers all the essentials. Word to the wise: early production models may require pricey air suspension maintenance – always check service records and scrutinize the suspension. Also test all touchscreen functions thoroughly. Its resale value sits mid-pack among rivals, with maintenance costs higher than Japanese competitors but lower than AMG models. For buyers wanting a business-savvy yet sporty four-door coupe with star power, a well-maintained CLS at the right price still delivers. Just be smart – prioritize certified pre-owned units through authorized dealers for that extended warranty safety net.
Special Disclaimer: This content is published by users and does not represent the views or position of PCauto.

Related Q&A

Q
What are some alternatives to the 2018 CLS?
If you're looking for an alternative to the 2018 CLS, consider the BMW 6 Series Gran Coupe, Audi A7, or Lexus GS—all offering that luxury four-door coupe vibe with a blend of sportiness and comfort. The 6 Series Gran Coupe nails precise handling and upscale interiors, perfect for driving enthusiasts. The A7 stands out with its tech-forward vibe, thanks to the Virtual Cockpit and that sleek fastback design. Meanwhile, the GS delivers plush ride quality and rock-solid reliability. For better value, the Infiniti Q60 or Jaguar XF are solid picks, packing bold styling and plenty of features. And if you’re eyeing EVs, the Tesla Model S brings next-level performance and tech, though its vibe leans more futuristic. Each of these has its own flavor, so test drives are key. At the end of the day, how it drives and fits your daily grind matters most.
Q
Is the 2018 CLS a reliable car?
The 2018 CLS has proven to be generally reliable in real-world use. Its 3.0L V6 turbocharged engine is a well-sorted powerplant, delivering smooth acceleration with reasonable fuel efficiency for daily driving. Maintenance costs are relatively manageable for this segment. The cabin showcases Mercedes' signature craftsmanship, and the electronics have held up well over time. That said, like most luxury vehicles, watch out for aging components – the air suspension in particular deserves regular inspections to avoid costly repairs down the road. One standout feature is Merc's then-new MBUX infotainment system. While packed with tech, early software versions could occasionally lag (a dealership update usually sorts this). In terms of resale value, the CLS sits mid-pack among its peers – thorough service history is key if you're buying used. Those coupe-like looks still turn heads today, though the sloping roofline does pinch rear headroom. It's better suited for small families or as a stylish commuter. Pro tip: When checking used examples, pay extra attention to transmission behavior and any suspension noises – these are common wear points on aging German performance cars.
Q
What are the common problems with a 2018 CLS550?
**2018 CLS550 Common Issues (High-Performance Luxury Coupe)** Owners of the 2018 CLS550 have reported a few recurring problems, mostly related to electronics and mechanical components. The air suspension system can develop leaks or lose damping effectiveness over time, particularly if the car is frequently driven on rough roads. Regular suspension checks are recommended to keep it functioning properly. Another known hiccup is the COMAND infotainment system—it occasionally freezes or goes blank. A simple system reboot or software update usually does the trick. Under the hood, the 4.0L V8 biturbo packs serious power, but in hot, humid climates, the turbo cooling system may demand more frequent attention. Staying on top of spark plug and ignition coil replacements is key to avoiding performance dips. Fair warning: Maintenance costs for this luxury coupe are on the higher side. If you’re buying used, insist on a thorough inspection and verified service history. And given the car’s advanced tech, always opt for certified specialists for repairs—it’s the best way to keep it running like new.
Q
What is the resale value of a 2018 CLS 550?
"The resale value of a used 2018 CLS 550 depends on factors like condition, mileage, service history, and optional specs—currently ranging around RM250k to RM350k, but a proper assessment is needed for an exact figure. Packing a 4.7L V8 biturbo engine, it delivers strong performance plus a premium interior, so demand remains decent in the used market, especially for well-maintained examples. The CLS’s coupe-like styling and Mercedes’ brand cachet also help prop up its value. For a precise quote, hit up local used-car platforms or dealers for a professional inspection. It’s smart to cross-shop rivals like the Audi A7 or BMW 6 Series from the same year. Pro tip: Consistent maintenance and full service records are critical for preserving value—high-end buyers always check those details."
Q
What is the horsepower of the 2018 CLS?
The 2018 Mercedes-Benz CLS offers varying power outputs across its lineup. The CLS 350 features a 3.0L V6 turbocharged engine delivering 367 horsepower, while the performance-oriented CLS 53 pairs a 3.0L inline-six turbo with an electric assist system for a combined 435 hp. Both variants come mated to a 9-speed automatic transmission, balancing spirited performance with fuel efficiency. As a four-door coupe, the CLS is tuned for linear power delivery and sporty handling while retaining Mercedes’ signature luxury comfort—ideal for drivers seeking both excitement and everyday usability. Those craving more extreme performance should explore AMG models with their more aggressive setups. If you’re considering one, test drives are a must. The acceleration and chassis tuning differ noticeably between powertrains, so pick what suits your needs. And remember: regular maintenance is key to keeping these engines in top shape.
Q
Is the 2018 CLS 550 reliable?
The 2018 CLS 550, as Mercedes-Benz's luxury four-door coupe, delivers above-average reliability overall. Its 4.7L V8 biturbo is a proven powerplant with stable output, though be aware of common long-term wear items like seal leaks or aging ignition coils—regular inspections are key. The 9G-Tronic transmission offers buttery shifts, though some early-build models may exhibit slight lag (fixable via a software update). Watch out for pricey electronic gremlins, particularly in the air suspension and COMAND system. Always scan for stored fault codes before buying. While the CLS 550 holds value better than most rivals, expect 20-30% higher maintenance costs compared to Japanese luxury brands in the used market. If shopping pre-owned in humid climates, pay extra attention to: - Engine health (listen for timing chain noise) - Suspension bushings/air struts - Sunroof drain tubes (common clog points) Stick to factory maintenance intervals with genuine parts, and you’ll enjoy this grand tourer—just budget for the occasional electronic hiccup.
  • Popular Cars

  • Model Year

  • Car Compare

  • Car Photo

Pros

Powerful engine with rapid response
Smooth gear shifting of the transmission
Chassis tuned for comfort and sportiness
Excellent braking system with strong stopping power
Unique and elegant exterior design
High-quality interior materials and craftsmanship
Spacious front row seating area
Advanced safety and driver assistance features
Quiet and comfortable driving environment

Cons

Rear space is limited, especially for headroom
Suspension may feel soft during aggressive driving
Some may dislike the current front face design
High fuel consumption compared to hybrids
Interior tech might seem less advanced than rivals

Latest Q&A

Q
Is high or low suspension better?
Choosing the right suspension height comes down to your specific driving needs. A taller suspension works better for drivers tackling rough roads or frequent off-camber terrain—it gives more ground clearance and better obstacle-hugging capability, perfect for country lanes or light off-roading. The trade-off? You’ll lose some high-speed stability and sharp handling. On the flip side, a lower suspension is ideal for city driving or sporty rides. It drops the center of gravity, boosting cornering stability and high-speed grip, though it sacrifices ground clearance and can scrape the undercarriage easily. If you mostly stick to smooth city streets or highways, the lower setup feels more composed and secure. Beyond height, suspension stiffness plays a big role too. Softer tuning soaks up bumps nicely, making it great for family cars, while stiffer setups deliver tighter feedback and sharper responses—total must for sports models. Bottom line: Pick what matches your daily roads and how you like to drive.
Q
What is rear suspension?
The rear suspension is a crucial component in a car's chassis system that connects the body to the rear wheels. Its main job is to support the vehicle's weight, absorb road vibrations, and keep the tires in contact with the ground, ultimately enhancing driving stability and ride comfort. Common types of rear suspension include torsion beam, multi-link, and double wishbone setups. Torsion beam suspensions, with their simple structure and lower cost, are often found in economy cars. On the other hand, multi-link suspensions use multiple control arms to independently manage wheel movement, delivering more precise handling and better shock absorption—features you'll typically see in mid-to-high-end models. Additionally, some high-performance or luxury vehicles employ air suspension or adaptive suspension technology, which can dynamically adjust damping stiffness based on road conditions to further refine the driving experience. Among popular local models, Japanese cars tend to favor durable torsion beam designs, while European models lean toward multi-link setups to emphasize driving feel. Suspension tuning also directly shapes a vehicle's character: a softer setup is ideal for long-distance comfort, while a stiffer tune better suits cornering dynamics. Consumers should choose based on their own needs.
Q
Why is it called a suspension?
The suspension system is called "suspension" because its core function is to "suspend" the vehicle body above the wheels. It cushions road impacts through components like springs and shock absorbers, ensuring stability and comfort while driving. The term comes from the Latin "suspendere," meaning "to hang" or "to lift," which accurately describes the mechanical principle of dynamically isolating the body from the wheels. In engineering design, the suspension system not only absorbs vibrations but also maintains tire contact with the ground, which is crucial for handling and safety. Common suspension types include independent and non-independent systems. The former handles each wheel's vibrations individually, ideal for comfort-focused models, while the latter is simpler and more durable, often used in vehicles emphasizing load capacity. With technological advancements, many high-end models now feature adaptive suspension, which automatically adjusts stiffness based on road conditions to further enhance the driving experience. Understanding this helps focus more on suspension configuration when choosing a car, as it directly impacts daily driving quality and fatigue levels during long trips.
Q
How does front suspension affect handling?
The front suspension system directly impacts a vehicle's handling, primarily through three aspects: geometric design, damping tuning, and structural rigidity. MacPherson struts are common in regular cars due to their simple structure and low cost, offering decent steering feedback and comfort, but body roll is more noticeable during aggressive cornering. Double-wishbone or multi-link suspensions, on the other hand, improve tire contact with the road through more complex geometries, maintaining better grip especially in corners, making them ideal for performance models. Spring stiffness and shock absorber damping settings also alter handling characteristics; stiffer setups reduce body roll but compromise comfort, while electronically adjustable suspensions can balance both. Additionally, the caster angle design affects steering wheel self-centering force and high-speed stability—a larger caster angle enhances straight-line stability but increases steering effort. It's worth noting that suspension performance also needs to match tires, steering system, and vehicle center of gravity. For example, low-profile tires improve cornering precision but amplify road feel transmitted through the suspension. In daily driving, regularly checking the condition of suspension bushings and shock absorbers is important too; worn components can lead to vague handling and even affect driving safety.
Q
What is a front suspension fork?
The front suspension fork is the core component of a motorcycle's front wheel suspension system, primarily responsible for connecting the wheel to the frame while absorbing road vibrations and maintaining riding stability. It consists of upper and lower fork legs, which typically house springs and dampers (like hydraulic shock absorbers) that compress and rebound to cushion bumps. In the automotive world, similar structures are known as "MacPherson struts" or "double wishbone suspensions," but they share the same basic principle: using geometric design to control wheel movement paths. Unlike motorcycles' open fork leg design, car suspensions lean more toward complex setups like multi-link or torsion beams to handle heavier vehicle weights. In everyday riding, the condition of the front suspension directly affects steering precision and comfort—any oil leaks or unusual noises mean it needs prompt inspection and repair. These days, many high-end models even come with adaptive damping systems that automatically adjust stiffness based on road conditions, a technology that originally grew out of suspension tuning experience in motorcycle racing.
View More