Mercedes CLS 450 2018: Full Review, 0-100km/h In 4.8s

The 2018 Mercedes-Benz CLS 450 marks a significant evolution in the brand’s lineup, introducing a fresh take on the four-door coupe concept. This model combines aerodynamic elegance with high-performance engineering, drawing inspiration from the flagship S-Class while offering a more dynamic driving profile. Powered by a groundbreaking inline-six engine with mild-hybrid assistance, it delivers seamless power and efficiency, making it ideal for long-distance cruises and spirited drives alike.

Striking Exterior Design and Aerodynamics

The CLS 450’s exterior captures attention with its low-slung silhouette and frameless windows, creating a true coupe-like appearance despite four doors. The body measures over five meters in length, yet clever proportions make it appear agile. Standard 20-inch AMG-style alloys fill the wheel arches, complemented by Multibeam LED headlights that provide exceptional illumination and adaptive functionality.

Mercedes engineers focused on aerodynamics, achieving a low drag coefficient through features like active grille shutters and flush door handles. The result is not just visual appeal but real-world benefits in fuel efficiency and high-speed stability. Available in various premium paints, the CLS 450 exudes sophistication from every angle, with a subtle AMG exterior kit enhancing its sporty stance without venturing into full performance territory.

Powertrain Innovation: The New Inline-Six with EQ Boost

At the heart of the CLS 450 lies the all-new M256 3.0-liter inline-six turbocharged petrol engine, a return to the straight-six configuration after decades dominated by V6s. Producing 270kW at 5500-6100rpm and 500Nm from 1600-4000rpm, it pairs with a 48-volt mild-hybrid system featuring an integrated starter-generator (ISG). This EQ Boost adds up to 16kW and 250Nm temporarily, pushing system torque to 750Nm for effortless acceleration.

Mated to a smooth nine-speed automatic transmission and 4MATIC all-wheel drive, the powertrain propels the 1940kg coupe from 0-100km/h in 4.8 seconds. Reviewers praise its refinement, noting near-silent operation at highway speeds in Eco mode, where the engine idles just above tick-over in ninth gear. Dynamic Select modes allow tailoring—from plush Comfort to taut Sport+—with sailing functionality for coasting efficiency.

Luxurious Cabin: S-Class Quality in Coupe Form

Step inside, and the CLS 450 transports occupants into an S-Class-inspired haven. Dual 12.3-inch widescreen displays dominate the dashboard, running the intuitive MBUX infotainment with touchpad control, Apple CarPlay, Android Auto, and a customizable head-up display. The multi-function Nappa leather steering wheel includes swipe controls, while ambient lighting offers 64 colors for mood setting.

Seating is a highlight: heated, memory front seats with ergonomic support and massage functions via the Energizing Comfort package. Rear space prioritizes legroom over headroom due to the sloping roofline, but the bench accommodates adults comfortably for mid-length trips. Materials shine—open-pore wood, premium leather, and soft-touch surfaces create a solid, hushed environment. Burmester surround sound elevates audio, and features like power soft-closing doors and dual-zone climate control add to the opulence.

• Key Interior Features:
• Twin 12.3-inch digital displays with HUD
• Burmester 13-speaker audio system
• 64-color ambient lighting
• Heated/memory seats with Energizing package
• Lockable cooled glovebox and THERMATIC climate

Driving Dynamics: Balance of Comfort and Agility

Despite its size, the CLS 450 handles with surprising ease, thanks to a dropped bonnet and boot for better visibility. The standard adaptive air suspension (on some markets) or mechanical setup absorbs imperfections while maintaining composure. In Comfort mode, it glides over highways with minimal wind or tire noise; Sport modes sharpen throttle response and steering weight.

Steering is precise yet light, aiding maneuverability in urban settings, though tight multi-story parks demand care due to length. The 4MATIC system enhances traction, and run-flat MOExtended tires with pressure monitoring ensure safety. Overall, it excels as a grand tourer—relaxed for daily duties, engaging when pushed.

Advanced Safety and Driver Assistance Suite

Safety is comprehensive, with nine airbags, PRE-SAFE Impulse Side, and Electronic Stability Program with crosswind assist. The Driving Assistance package includes adaptive cruise control, autonomous emergency braking, lane-keeping, and traffic sign recognition. A 360-degree camera with dynamic guidelines simplifies parking, while Multibeam LEDs and active bonnet mitigate collision risks.

• Active Brake Assist with hold and hill-start
• 360° camera and tyre pressure monitoring
• Anti-Theft Alarm with interior surveillance
• Crash-responsive emergency lighting

Practicality and Everyday Usability

The CLS 450 offers a decent boot for its class, accommodating luggage for weekend getaways. Rear seats fold for extra capacity, though the sloping tail limits outright volume. Fuel tank supports long ranges, aided by the efficient powertrain. As a daily driver, it impresses with quietness, tech integration, and ease of use, though taller passengers may find ingress/egress less graceful due to low roofline.

Pros and Cons at a Glance

Competitor Comparison

The CLS 450 slots between sport sedans like BMW 6 Series GT and Porsche Panamera, offering superior luxury at a competitive price around $150,000-$160,000. It outshines in refinement but trails pure sports cars in handling sharpness.

Frequently Asked Questions (FAQs)

What engine powers the 2018 CLS 450?

A 3.0L turbo inline-six with 48V mild-hybrid EQ Boost, delivering 270kW and up to 750Nm torque.

Is the CLS 450 suitable for families?

It’s better for couples or small families; rear headroom is tight, but legroom is generous.

What safety features are standard?

Nine airbags, AEB, 360-camera, adaptive cruise, and PRE-SAFE systems.

How fuel-efficient is it?

Claimed 8.7L/100km combined, impressive for a 1940kg AWD luxury coupe.

Does it have air suspension?

Adaptive air suspension is available; base models use mechanical for consistent feel.

Final Thoughts on Value and Ownership

The 2018 Mercedes CLS 450 stands out as a benchmark for luxury coupes, blending style, tech, and performance. Its mild-hybrid innovation hints at electrification’s future, while the cabin rivals pricier models. For buyers seeking elegance without compromise, it’s a compelling choice, backed by Mercedes’ warranty and service network. Minor quirks like steering controls aside, it delivers on every promise.