Used Mercedes CLS: Performance, Reliability, And Buying Tips

The Mercedes-Benz CLS redefined luxury with its innovative four-door coupe design, blending sleek aesthetics with practical usability. Launched in 2004, this model pioneered a segment that combined sports car flair and sedan space, appealing to drivers who prioritize distinctive looks and dynamic driving. Today, used examples offer premium features at accessible prices, but informed buyers must navigate potential reliability concerns and maintenance costs.

Overview of CLS Generations and Design Evolution

Mercedes produced three CLS generations from 2004 to 2018, each enhancing the car’s signature ‘four-door coupe’ profile with sloping rooflines and aggressive stances. The first generation (C219, 2004-2010) introduced the concept, featuring a bold front grille and frameless doors. It set benchmarks for luxury grand tourers with engines ranging from efficient diesels to potent V8s.

The second generation (C218, 2010-2018) refined proportions, incorporating advanced LED lighting and a more muscular presence. This era brought hybrid options and improved chassis dynamics. The third (C257, 2018 onward) shifted to a sleeker fastback style but remains pricier on the used market. Opting for a C218 offers the best value, balancing modernity and affordability.

• Key design strengths: Timeless curves that turn heads, excellent build quality, and spacious front seating.
• Compromises: Limited rear headroom due to the coupe roofline, making it less family-friendly.

Engine Options: Powertrains for Every Need

CLS buyers enjoy diverse engines, from frugal diesels to high-performance petrol units. Diesel variants dominate used listings for their torque and economy, while petrols deliver thrilling acceleration.

Diesels like the post-2012 OM651 excel in fuel efficiency, achieving up to 45 mpg on long runs, paired with smooth 7-speed automatics. Petrol V8s provide explosive power but demand vigilant maintenance.

Performance and Driving Dynamics

Behind the wheel, the CLS impresses with refined handling and composure. Air suspension (optional on many) delivers a plush ride, absorbing bumps while maintaining grip through corners. The 7-speed automatic shifts seamlessly, with paddle shifters for sporty engagement.

Owners praise its motorway prowess: quiet cabins, adaptive cruise control, and stability at high speeds make it a ‘mile muncher’. Acceleration is brisk across the board—0-60 mph in under 8 seconds for diesels, sub-5 for V8s. However, the low roofline compromises visibility, and rear space suits adults only for short trips.

Interior Quality and Technology Features

Mercedes’ cabins shine with supple leather, intricate stitching, and ergonomic layouts. Dual-zone climate, navigation, Bluetooth, and parking sensors are standard on most used models. Higher trims add Burmester audio, night vision, and massaging seats.

Build quality endures well, with fit-and-finish holding up over time. Tech levels are vast, including COMAND infotainment that’s intuitive for its era. Rear seats fold for versatility, though headroom is tight.

Reliability Ratings and Common Faults

Mercedes ranks middling in reliability surveys, with the CLS scoring 4/5 stars for 2012-2018 diesels. Brand-wide, it places 24th out of 31, underscoring the need for service history.

Engine woes:

• Pre-2012 OM651 diesels: Faulty injectors; redesigned post-2012.
• V8s (M278/M157): Timing chain/tensioner failures, oil leaks, valve wear—exacerbated by poor servicing.
• All diesels: EGR/DPF clogs from short trips.

Transmission issues: 7-speed auto can suffer rough shifts, valve body failures, or sensor glitches in both petrol and diesel.

Electrical gremlins: Rare but include boot mechanisms, window regulators, and dashboard rattles. Recalls affected steering (2017, 23 units), airbags (2017-2018, 58 units total).

Post-2012 diesels and well-maintained petrols fare best.

Ownership Costs: Running a Used CLS

Expect premium expenses: Tyres (£200+ each), brakes (£500-1000), and services (£400+). Diesels save on fuel but DPF/EGR fixes cost £1000+. V8s guzzle more, with repairs like timing chains exceeding £3000. Insurance groups are high (40-50), reflecting performance.

Depreciation favors buyers—2012-2015 models dip below £15,000, offering luxury for less. Parts availability is strong for popular engines.

What to Check Before Buying

Inspect service records rigorously—high-mileage V8s risk chain issues. Test drive for transmission smoothness and suspension noise. Scan for leaks under the bonnet. HPI check for recalls and history.

• Service intervals: Every 12 months/10k miles.
• Preferred mileage: Under 80k for diesels, 50k for V8s.
• Budget extra 10-20% annually for upkeep.

Shooting Brake variants add practicality without style loss.

Best Used CLS Models to Target

Prioritize 2012-2018 C218 diesels (CLS250/350 CDI) for reliability and economy. Avoid early OM651s. CLS350 petrol offers refinement without V8 thirst. AMG variants thrill but amplify costs.

Pros and Cons Summary

Frequently Asked Questions (FAQs)

Is the used Mercedes CLS reliable?

Moderately so—post-2012 diesels score well (4/5), but V8s need careful selection.

What’s the best engine for a used CLS?

Post-2012 2.1L or 3.0L diesel for balance of power, economy, and dependability.

How much does a used CLS cost to run?

£1500-3000/year including service, fuel, and insurance; V8s higher.

Any recalls on CLS models?

Yes, including steering and airbags in 2017-2018—verify with VIN.

CLS vs rivals: Worth it?

Yes for unique style; consider BMW 5GT or Audi A7 alternatives if practicality trumps looks.