Cls Class Buying: Your Ultimate Checklist

Looking to buy a Mercedes-Benz CLS? Our comprehensive checklist covers everything you need to know. From performance to interior features and common issues, we’ll guide you through a confident and informed purchase. Get ready to find your perfect CLS sedan.

Buying a car is exciting, but it can also feel overwhelming, especially when considering a luxury vehicle like the Mercedes-Benz CLS. With its blend of sportiness, elegance, and advanced technology, the CLS is a true statement car. However, navigating the different model years, engine options, and unique features requires a bit of insider knowledge. This guide is designed to simplify the process, ensuring you make a smart, satisfying choice. We’ll break down the key areas to inspect, questions to ask, and aspects to consider. Let’s get started on finding your ideal CLS.

Table of Contents

Understanding the CLS Lineup: Generations and Variations

Before diving into checklists, it’s vital to understand Mercedes-Benz CLS generations. Each generation brought new styling, technology, and performance. Knowing which era your target CLS belongs to will help you identify its specific strengths and potential quirks.

First Generation (C219: 2004-2010)

The original CLS, the C219, revolutionized the sedan segment with its coupe-like silhouette. It offered potent V6 and V8 engines, including the AMG variants. This generation is known for its distinctive styling and comfortable ride.

Second Generation (C218: 2010-2018)

The second generation introduced smoother lines and more advanced technology. It expanded the powertrain options with more fuel-efficient engines and the powerful AMG versions. The CLS Shooting Brake (wagon) was also introduced in certain markets during this period, offering practicality without sacrificing style.

Third Generation (C257: 2018-Present)

The current generation features a more aggressive, modern design. It’s packed with the latest Mercedes-Benz innovations, including advanced driver-assistance systems and a sophisticated infotainment system (MBUX). Engine options focus on more efficient, turbocharged units, including mild-hybrid technology.

Each generation has sub-models and trim levels. For example, you might see CLS 350, CLS 500, or CLS 63 AMG. These designations typically refer to the engine size and performance level. Higher numbers generally indicate more power.

Exterior Inspection Checklist: First Impressions Matter

The exterior of a CLS is often its most striking feature. A thorough visual inspection can reveal a vehicle’s history and its owner’s care.

Bodywork and Paint

Cleanliness: Start with a clean car. Dirt can hide imperfections.
Panel Gaps: Look for consistent gaps between body panels (doors, hood, trunk, fenders). Uneven gaps can indicate accident repair.
Paint Condition: Check for scratches, dents, rust, or paint abnormalities like fading or peeling. Use a magnet to check for body filler; it won’t stick to it.
Respray Signs: Look for overspray on trim, window seals, or lights, which can signify a repaint.
Glass: Inspect all windows and mirrors for chips, cracks, or pitting. Check the windshield for impact points.

Wheels and Tires

Wheel Condition: Examine wheels for curb rash, dents, or bends.
Tire Tread: Check tire tread depth. Ensure it’s even across the tire. Uneven wear might point to alignment or suspension issues. Look for cracking or dry rot on the sidewalls.
Tire Brand/Age: Note the tire brand and manufacturing date (found on the sidewall via a four-digit code, e.g., 1521 means the 15th week of 2021). Older tires may need replacement regardless of tread depth.

Lights and Trim

Headlights/Taillights: Check for cracks, condensation inside, or yellowing. Ensure all lights function correctly.
Chrome/Trim: Inspect any chrome or plastic trim for pitting, peeling, or damage.

Interior Inspection Checklist: Comfort and Technology

The CLS interior is designed to impress. Focus on condition, functionality, and the premium feel.

Seats and Upholstery

Material: Whether leather, MB-Tex, or cloth, inspect for tears, rips, stains, or excessive wear, especially on the driver’s seat bolsters.
Adjustments: Test all power seat adjustments (fore/aft, up/down, lumbar, recline, bolsters). Ensure memory functions work if equipped.
Heating/Ventilation: If the car has heated or ventilated seats, confirm they operate correctly.

Dashboard and Controls

Materials: Check for cracks, fading, or damage to the dashboard plastics and wood/aluminum trim.
Warning Lights: Upon starting the car, all dashboard warning lights should illuminate briefly and then turn off. Any lights remaining on indicate potential issues.
Infotainment System: Test the central display, navigation, radio, Bluetooth connectivity, and any other infotainment features.
Climate Control: Ensure all HVAC (Heating, Ventilation, and Air Conditioning) settings and zones function properly. Feel for consistent airflow and correct temperature.
Buttons and Switches: Press every button and toggle every switch to ensure they are responsive and undamaged.

Electronics and Features

Windows/Locks: Test all power windows, the sunroof (if applicable), and central locking.
Mirrors: Check power adjustment and auto-dimming features for mirrors.
Audio System: Play music through various sources (radio, CD, USB, Bluetooth) and check speaker quality.
Sensors: Test parking sensors and any camera systems.
Cruise Control/Adaptive Cruise Control: Ensure these systems engage and function as expected.

Headliner and Carpets

Headliner: Inspect for sagging, stains, or tears, particularly around the sunroof or dome lights.
Carpets: Check for excessive wear, stains, or dampness, which could indicate a leak.

Under the Hood and Mechanical Checks: The Heart of the CLS

This is where you assess the CLS’s performance and potential for future repairs. If you’re not mechanically inclined, bring a trusted mechanic for this part.

Engine Bay

Fluid Levels: Check engine oil, coolant, brake fluid, power steering fluid, and windshield washer fluid. Ensure they are at the correct levels and look clean. Milky or sludgy oil can indicate serious issues like head gasket problems.
Belts and Hoses: Inspect all visible belts for cracks, fraying, or excessive wear. Squeeze hoses; they should be firm, not brittle or mushy.
Battery: Check for corrosion on the terminals. Note the battery’s age if visible.
Leaks: Look for any signs of fluid leaks on the engine or underneath the car.
Engine Sound: When the engine is running, listen for any unusual noises like ticking, knocking, or whining.

Brakes

Brake Discs and Pads: Visually inspect brake discs for deep grooves or scoring. Check pad thickness if possible.
Brake Pedal: When test driving, the brake pedal should feel firm, not spongy.

Suspension

Struts/Shocks: Look for signs of leaks around the shock absorbers.
Test Drive: Listen for clunks or rattles when driving over bumps or uneven surfaces.

Test Drive Essential Checks: Putting it to the Wheel

A test drive is crucial to gauge the CLS’s overall condition and driving dynamics.

Starting and Idling

Cold Start: It’s best to test drive a cold engine. Listen for any unusual noises or rough idling.
Smoothness: The engine should idle smoothly without vibrations.

Driving Performance

Acceleration: Accelerate moderately and then firmly. The engine should respond smoothly without hesitation or strange noises.
Shifting: Automatic transmissions should shift smoothly without harshness or delay. Manual transmissions should engage gears easily and without grinding.
Steering: The steering should feel responsive and direct, with no pulling to one side. Listen for any clicking or popping sounds when turning sharply.
Braking: Test brakes at various speeds. They should be firm and stop the car in a straight line without pulsation or noise.
Suspension: Drive over different road surfaces, including bumps and uneven patches, to check for noises or impacts.

Gauges and Technology

Temp Gauge: Ensure the engine temperature stays within the normal range.
Information Display: Monitor the dashboard for any illuminated warning lights that appear during the drive.
All Features: Operate features like wipers, turn signals, and headlights while driving.

Common CLS Issues by Generation

Every car model can have specific issues. Researching common problems for the CLS generation you’re interested in can save you from unexpected expenses.

For detailed information on Mercedes-Benz common fault codes and diagnostics, resources like the National Highway Traffic Safety Administration (NHTSA) website can be invaluable for checking recalls and safety issues.

First Generation (C219)

Air Suspension (ABC): While offering a sublime ride, the Active Body Control (ABC) system can be complex and expensive to repair. Leaks, pump failures, and hose issues are common.
Transmission Issues: Some models may experience transmission glitches, particularly with higher mileage.
Rust: Check wheel arches, sills, and door bottoms for corrosion, especially in rust-prone climates.

Second Generation (C218)

Oil Leaks: Common areas include the valve cover gaskets and oil cooler seals.
Fuel Injectors: Certain engine variants might experience issues with fuel injectors over time.
Distronic/Adaptive Cruise Control: Sensors can sometimes be prone to malfunction or require recalibration.

Third Generation (C257)

MBUX Infotainment: While advanced, early software glitches could occur, often resolved with updates.
Emissions Systems: Modern turbocharged engines with complex emission controls can sometimes develop issues, particularly with sensors or catalysts.
Electrical Gremlins: As with many modern luxury cars, occasional minor electrical issues can arise, often related to sensors or control modules.

Documentation and Pre-Purchase Inspection: The Final Seal of Approval

Beyond visual and mechanical checks, important documents and a professional inspection are crucial.

Paperwork to Verify

Vehicle History Report: Obtain a report from services like Carfax or AutoCheck. This can reveal accident history, odometer discrepancies, ownership changes, and service records.
Service Records: Look for regular maintenance. A well-documented service history is a huge plus. Ensure it includes oil changes, fluid flushes, and major service points as per the Mercedes-Benz maintenance schedule.
Title: Ensure the title is clear, meaning there are no liens or branding (like salvage or flood damage).
Owner’s Manual: Confirm the owner’s manual is present.

Pre-Purchase Inspection (PPI)

This is non-negotiable. Take the car to an independent Mercedes-Benz specialist or a reputable mechanic you trust. They have the tools, knowledge, and experience to identify issues you might miss. A PPI typically costs around $150-$300, which is a small price to pay compared to potential repair costs.

A PPI should include:

A thorough mechanical inspection of the engine, transmission, suspension, brakes, exhaust, and electrical systems.
Inspection of the underbody for rust, damage, or leaks.
Diagnostic scan for fault codes using specialized Mercedes-Benz software.
A detailed report of the car’s condition, highlighting any needed repairs and their estimated costs.

Pricing and Negotiation Strategy: Getting the Best Value

Understanding the CLS market value is key to negotiating effectively.

Research Market Value

Use online resources like Kelley Blue Book (KBB), Edmunds, and NADA Guides to get an estimated value for the CLS model, year, mileage, and condition you are considering. Also, check classifieds and dealership websites for comparable listings in your area.

Factors Affecting Price

Mileage: Lower mileage generally commands a higher price.
Condition: Excellent cosmetic and mechanical condition will increase value.
Trim Level and Options: Higher trim levels (e.g., CLS 550 vs. CLS 350) and desirable options (e.g., AMG package, premium sound, active safety features) will impact cost.
Maintenance History: A complete service history can justify a higher price.
PPI Findings: Use any issues identified in the pre-purchase inspection as leverage for negotiation.

Negotiation Tips

Be Prepared to Walk Away: This is your strongest negotiating tool.
Know Your Budget: Set a maximum price you’re willing to pay.
Focus on the Out-the-Door Price: This includes taxes, fees, and all other charges.
Be Polite but Firm: A respectful approach can go a long way.

CLS Buying Comparison: Key Considerations

Here’s a quick look at various aspects to weigh as you narrow down your CLS choice:

Feature	Generations C219 (2004-2010)	Generations C218 (2010-2018)	Generations C257 (2018-Present)
Styling	Bold, distinctive coupe profile. Classic Mercedes luxury.	Smoother, more aerodynamic lines. Elegant evolution. Introduction of the Shooting Brake.	Aggressive, modern sport sedan. Sharper creases.
Engine Performance	Potent V6 and V8. Notable AMG variants (55, 63).	More efficient V6/V8. Powerful AMG 63 models.	Turbocharged V6/V8 with mild-hybrid tech. High-performance AMG 53 and 63 variants.
Technology	Older infotainment. Basic driver aids.	Improved infotainment (COMAND NTG). More advanced safety features available.	MBUX infotainment system. Extensive driver assistance suites. Digital cockpit.
Ride Quality	Comfort-oriented, especially with ABC suspension.	Balanced comfort and sportiness. Available AIRMATIC suspension.	Configurable ride with AIRMATIC. Sportier bias in some trims.
Potential Issues	ABC system, rust, some transmission concerns.	Oil leaks, fuel injectors, potential electronic module issues.	Infotainment glitches (early on), emissions systems, minor electrical quirks.
Cost of Ownership	Parts can be harder to find for older models. High potential for repairs on ABC system.	Relatively robust. More readily available parts.	Newest tech means potentially higher repair costs for advanced systems. Regular maintenance is key.

Frequently Asked Questions About Buying a CLS Class

Here are answers to some common questions prospective CLS buyers have.

Q1: Is the Mercedes-Benz CLS a reliable car?

Mercedes-Benz CLS models, particularly those with regular maintenance and a strong service history, can be reliable luxury vehicles. However,