The new Mercedes-Benz S-Class explained: engines, technology and what you need to know

In celebration of 140 years since Carl Benz’s invention of the automobile in 1886, Mercedes-Benz has pulled back the covers on the new S-Class, the world’s best-selling luxury saloon.

More than 50 percent of the car is newly-developed, updated and refined, including for the first time, an optionally illuminated Mercedes star on the bonnet and a 20 percent larger illuminated grille. 

The new S-Class now has a broad spread of electrified powertrains with an intense focus on digital systems that the German manufacturer says define how the S-Class is experienced.

Here’s what you need to know.

Model range and body styles

The S-Class remains available in standard and long-wheelbase form, with the long-wheelbase models continuing to dominate markets where rear-seat comfort takes priority.

In addition to the conventional luxury saloons, the line-up also includes plug-in hybrids, six- and eight-cylinder petrol and diesel options, and the high-security S 680 GUARD for specialised use.

All models are paired with Mercedes-Benz’s 9G-TRONIC automatic transmission and feature mild-hybrid technology via a 48-volt system.

Petrol engines

The petrol powered range starts with the updated 3.0-litre inline-six turbocharged engine, used in the S 450 and S 500 4MATIC long-wheelbase models.

• S 450 4MATIC: 270kW and up to 600Nm
• S 500 4MATIC: 320kW and up to 600Nm, with overboost briefly lifting torque to 640Nm

Both have an integrated starter-generator delivering an additional 17kW, smoothing stop-start operation and low-speed response.

At the top of the petrol range is the S 580 4MATIC, powered by a revised 4.0-litre V8 with 395kW and 750Nm. It’s also mild-hybrid assisted, with updates aimed at faster response and improved refinement rather than performance.

Plug-in hybrids

Mercedes-Benz continues to push plug-in hybrid technology in the S-Class, with two long-wheelbase models available:

• S 450 e: Combined system output of up to 280kW
• S 580 e 4MATIC: Combined system output of up to 375kW

Both pair the six-cylinder petrol engine with an electric motor and offer an electric-only driving range of up to 100 kilometres.

Diesel still relevant

Despite the shift towards electrification, diesel remains part of the S-Class line-up. The six-cylinder turbodiesel features updated exhaust after-treatment, including an electrically heated catalytic converter.

• S 350 d 4MATIC: 230kW and 650Nm
• S 450 d 4MATIC: 270kW and 750Nm

Both are mild-hybrid assisted and remain the long-distance champions of the range.

Suspension and steering

Airmatic air suspension is standard, with E-Active Body Control offered as an option. Both systems now use predictive damping that adjusts before speed bumps, improving ride comfort.

Rear-axle steering is standard at 4.5 degrees, with an optional 10-degree system reducing the turning circle by almost two metres on long-wheelbase models. At speed, the rear wheels steer in phase with the fronts to enhance stability.

Digital backbone

The biggest changes to the new S-Class are digital, running on Mercedes-Benz Operating System (MB.OS), effectively a central supercomputer controlling everything from infotainment to driver assistance.

The fourth generation of MBUX introduces a cleaner interface, faster processing and a new AI-based voice assistant. It integrates ChatGPT-based conversational AI alongside Google and Microsoft services, allowing more natural interaction and multi-step commands.

The MBUX Superscreen is now standard, combining a 14.4 inch central display and a 12.3 inch passenger screen under a single glass surface. The digital instrument cluster is 12.3 inches and can be specified with a 3D effect.

Navigation is Google Maps-based, enhanced with augmented-reality overlays and a head-up display that projects guidance directly onto the road ahead.

Driver assistance and safety

As you would expect, every S-Class comes loaded with sensors. Cameras, radar and ultrasonic units feed into the MB.DRIVE assistance systems. Adaptive cruise control, lane-keeping assistance and automated lane changes are standard, while higher-level functions are available depending on market regulations.

Parking assistance has been improved with earlier space detection and the ability to retrace a previously driven path when reversing, especially useful in tight urban environments.

Rear-seat business experience

In long-wheelbase form, the S-Class has an optional four-seat rear configuration that turns the back of the car into a mobile office, with electrically adjustable individual seats, a full-length centre console and fold-out tables.

Rear passengers get 13.1-inch MBUX screens with integrated cameras, allowing video conferencing via platforms such as Teams, Zoom or Webex. Wireless and high-power USB-C charging ports, refrigerated storage for drinks, and most key vehicle functions can be controlled via detachable MBUX tablets. 

MANUFAKTUR Made to Measure

MANUFAKTUR Made to Measure takes customisation beyond the options list. The programme allows customers to choose from more than 150 exterior paint finishes and over 400 interior colour combinations, with a wide range of leathers, trims and detailing that are pre-approved and priced upfront. 

There are bespoke steering wheels, illuminated door sills, unique emblem packages and tailored interior finishes that let owners create something individual. For requests outside the standard catalogue, Mercedes-Benz evaluates them on a case-by-case basis.

The new Mercedes-Benz S-Class is set for local release in 2027. Pricing and model range will be made public closer to market introduction.