Mercedes CLS 350 BlueEfficiency: Complete Review And Specs

The Mercedes CLS 350 BlueEfficiency stands out as a pioneering luxury coupe that masterfully combines striking design, advanced engineering, and impressive efficiency. Launched as part of Mercedes-Benz’s push toward sustainable performance, this model incorporates the innovative BlueEfficiency package, which optimizes fuel consumption without sacrificing the brand’s signature power and refinement. With its sleek ‘four-door coupe’ silhouette, the CLS 350 appeals to drivers who demand both visual flair and practical sophistication.

Design and Aerodynamics: A Masterclass in Form and Function

At the heart of the CLS 350 BlueEfficiency’s appeal is its aerodynamic prowess. Measuring 4,940mm in length and 1,881mm in width, the car achieves a drag coefficient of 0.26Cd, a remarkable 13% improvement over its predecessor. This wind-tunnel-tested efficiency translates to better fuel economy and stability at high speeds. Engineers used lightweight aluminium for doors, bonnet, front fenders, boot lid, and other components, reducing overall weight by about 24kg. These changes minimize fuel demands while maintaining structural integrity.

The exterior boasts a sweeping roofline that creates an illusion of motion even when parked. Subtle metallic accents and AMG-inspired styling elements, like 19-inch alloy wheels, enhance its aggressive yet elegant stance. Inside, the cabin exudes premium quality with dual-zone climate control, intuitive COMAND infotainment, and supportive seating for four. Luggage space measures 520 litres, ample for weekend getaways.

Powertrain Excellence: V6 Muscle Meets Efficiency

Powering the CLS 350 BlueEfficiency is a 3.5-litre naturally aspirated V6 petrol engine producing 225kW and 370Nm of torque. Paired with a smooth seven-speed 7G-TRONIC automatic transmission and rear-wheel drive, it accelerates from 0-100km/h in just 6.0 seconds, with a top speed electronically limited to 250km/h. This setup delivers flexible, refined performance ideal for highway cruising or spirited drives.

BlueEfficiency features shine here: an electromechanical Direct Steer system cuts fuel use by 0.3L/100km and reduces CO2 emissions by 7g/km, all while preserving sharp steering feedback. ECO Start-stop technology, available on petrol variants, further enhances economy, achieving combined figures around 5.7-6.1L/100km and CO2 outputs of 159-164g/km. These stats outperform many smaller vehicles, making it a smart choice for efficiency-conscious luxury buyers.

Driving Dynamics: Agile Giant

Despite its imposing size, the CLS 350 handles with surprising agility. The Direct Steer system provides precise control, and the suspension balances comfort with sportiness. Rear-wheel drive ensures engaging dynamics, with ample torque for effortless overtakes. Reviewers praise its smooth engine note under acceleration, though diesel variants offer even stronger low-end pull.

On twisty roads, the car’s 11.27m turning circle aids maneuverability. Braking is confident, supported by Euro 5-compliant systems. Fuel delivery via direct injection ensures responsive throttle mapping, making everyday drives enjoyable.

Interior Comfort and Technology

The cabin is a sanctuary of luxury. Seats offer excellent support, and the COMAND system handles navigation effortlessly. Dual-zone climate keeps temperatures perfect, while ambient lighting adds mood. Build quality is impeccable, with soft-touch materials throughout.

• Key Tech Features: COMAND infotainment with sat-nav
• Climate Control: Dual-zone automatic
• Seating: 4 passengers with premium leather
• Cargo: 520L boot capacity

Comparing Variants: Petrol vs Diesel BlueEfficiency

The CLS lineup offers petrol and diesel options. The 350 petrol excels in refinement, while the 350 CDI diesel provides torque-rich efficiency at 6.0L/100km. Both share BlueEfficiency tech but cater to different needs: petrol for smooth revs, diesel for economy.

Safety and Practicality

Safety features include multiple airbags, stability control, and attention assist. The 80L fuel tank supports long ranges, and the space-saver spare adds peace of mind. Gross vehicle weight is 2,300kg, with a 15.5:1 compression ratio in diesel models for efficiency.

Ownership Costs and Verdict

Priced around $159,200 (list), the CLS 350 offers value through low running costs. Maintenance is straightforward for Mercedes specialists, and resale holds strong. It’s a compelling executive choice blending luxury, tech, and green credentials.

Frequently Asked Questions (FAQs)