Mercedes CLS 2005-2010: Used Buyer’s Guide & Key Tips

The Mercedes-Benz CLS from 2005 to 2010 marked a bold step in automotive design, introducing the world’s first four-door coupe. This model combined the sleek silhouette of a grand tourer with the practicality of a saloon, appealing to buyers who craved distinctive style without sacrificing usability. Built on a modified E-Class platform, it offered premium materials, potent engines, and advanced technology that set it apart in the luxury segment.

Design and Exterior Highlights

The CLS’s exterior was its standout feature, with a low-slung roofline, frameless windows, and aggressive front fascia that turned heads. Available in lengths around 4.9 meters, it projected an air of sophistication and sportiness. The bodywork featured smooth curves and subtle creases, enhancing its aerodynamic profile while maintaining Mercedes’ signature chrome accents on grilles and trim.

• Sweeping roofline: Mimics traditional coupes for a dynamic profile.
• LED taillights: Early adoption of modern lighting tech for better visibility.
• Wheel options: From 17-inch alloys to larger AMG styles up to 19 inches.

Paint choices ranged from classic silvers and blacks to vibrant reds, with many surviving examples showing good preservation due to galvanised steel construction.

Interior Comfort and Features

Inside, the CLS pampered occupants with high-quality leather, wood veneers, and aluminium trims. Front seats were power-adjustable with memory functions, heating, and ventilation options. The cabin felt expansive upfront, but the sloping roof reduced rear headroom, making it best for two adults.

Standard kit included dual-zone climate control, a premium sound system, and navigation. Higher trims added adaptive cruise control, night vision, and a panoramic sunroof. Boot space measured about 16 cubic feet, sufficient for luggage with a 60/40 split-folding rear bench.

Engine Lineup and Performance

Mercedes offered a diverse range of powertrains, from efficient diesels to thunderous V8s. The lineup catered to various preferences, balancing power, economy, and emissions.

• CLS350: 3.5L V6 petrol, 272 hp, 0-60 mph in 6.8 seconds, top speed 155 mph, 31 mpg combined.
• CLS320 CDI: 3.0L V6 diesel, 224 bhp, 376 lb-ft torque, 0-60 in 7 seconds, 37 mpg, low CO2 at 217 g/km.
• CLS500: 5.5L V8, 387 hp in later models, 0-60 in 5.4 seconds, 16 mpg combined.
• CLS63 AMG: 6.2L V8, 507 hp, 0-60 in 4.3 seconds, explosive acceleration.

The seven-speed automatic transmission was smooth, with paddle shifters for manual control. Rear-wheel drive dominated, though 4MATIC all-wheel drive appeared in some markets for better traction.

Driving Experience and Handling

Behind the wheel, the CLS delivered a composed ride thanks to its adaptive air suspension (AIRMATIC), which adjusted for comfort or sportiness. In Comfort mode, it absorbed bumps gracefully; Sport modes sharpened responses without harshness. Steering was precise, and the chassis—shared with the E-Class—provided stability at high speeds.

Owners praised its balance: potent thrust from V8s paired with refined cruising. The CLS550’s 382 hp V8 offered brisk overtaking, hitting 60 mph in 5.4 seconds. Diesel variants excelled in real-world torque for effortless motorway runs.

“Blending performance and luxury into a sexy and modern package…” – Edmunds review.

Reliability and Common Issues

Overall reliability is solid for a luxury car of this era, with few major flaws reported. The E-Class underpinnings contributed to durability, but watch for:

• AIRMATIC suspension: Air struts may leak after 100,000 miles; replacement costs £1,000+ per corner.
• ABC hydraulic suspension (AMG): Prone to pump failures; convert to coils for longevity.
• Electronics: Comand infotainment glitches, rust on subframes in wet climates.
• Engine specifics: Diesel chain tensioners in early CDI models; V8 timing chains in petrols.

Regular servicing is key. Many examples exceed 150,000 miles with proper maintenance. YouTube buying guides note minimal issues beyond age-related wear.

Ownership Costs and Fuel Economy

Running costs vary by engine. Diesels shine with 35-40 mpg, suiting high-mileage drivers. V8s guzzle more at 15-20 mpg, but tax bands were reasonable for the time.

Insurance groups range 45-50. Parts are pricey but available. Used prices start at £5,000 for high-mileage diesels, up to £20,000 for pristine AMGs.

Market Value and Buying Advice

Today, the CLS offers strong value. Seek full service history, especially for suspension and transmissions. Rust checks underbody; test electronics thoroughly. Low-mileage V8s hold value well due to enthusiast appeal.

• Budget buy: CLS320 CDI under £8,000.
• Sweet spot: CLS350/500, £10,000-£15,000.
• Premium: AMG models, £18,000+.

Depreciation has stabilised, making it cheaper than newer rivals. RAC reviews highlight its excitement factor in the used market.

Safety and Technology

Mercedes equipped the CLS with PRE-SAFE anticipatory braking, multiple airbags, and stability control. Euro NCAP awarded five stars. Tech included adaptive headlights, blind-spot monitoring, and voice-activated Comand.

Owner Satisfaction

Owners rate it highly: 4.7/5 on Edmunds, praising styling and comfort. Kelley Blue Book notes solid build despite rear access quirks. It’s a “head-turner” with a plush interior.

Frequently Asked Questions (FAQs)

Is the 2005-2010 Mercedes CLS reliable?

Yes, with regular maintenance. Common fixes involve suspension, but engines are durable.

What’s the best engine for the CLS?

CLS320 CDI for economy; CLS500 for power balance.

How much boot space does it have?

About 15.9 cubic feet, expandable with folding seats.

Is 4MATIC available?

Limited to later petrol models in select markets.

What’s the top speed?

Electronically limited to 155 mph across most variants.

Why Choose the CLS Today?

The 2005-2010 CLS remains a compelling used buy for its unique design, engaging drive, and luxury credentials. It outshines bland saloons, offering coupe flair with four doors. Perfect for those wanting Mercedes prestige on a budget.