New Mercedes-Benz C-Class Brings AI Voice Assistant and 255-Horsepower Engine to US in 2027

Mercedes-Benz has revealed the biggest update to the C-Class in the sedan’s 44-year history, and it lands at US dealerships in the first half of 2027 with a reworked turbo engine, a voice assistant built on ChatGPT, Microsoft Bing and Google Gemini, and a cabin borrowed almost wholesale from the flagship S-Class.

The C-Class is Mercedes’ best-selling model line, with more than 12 million sold worldwide, and this refresh touches nearly everything a driver interacts with day to day: the engine, the two main screens, the voice assistant that talks back, and the way the car lights up when you walk up to it at night.

A Stronger Engine With an Electric Boost

Under the hood sits a further developed 2.0-liter turbocharged four-cylinder, badged M254 EVO, producing 255 horsepower and 295 lb-ft of torque. A new electric auxiliary compressor, powered by the car’s 48-volt system, spins up within milliseconds to fill in power delivery at lower engine speeds alongside the regular turbocharger. Drivers can also call on an overboost function that adds another 27 horsepower for roughly 20 seconds at a time.

A second-generation starter-generator, badged ISG 2.0, works alongside the engine, adding up to 23 horsepower and 151 lb-ft on its own at low speeds and handling coasting and energy recovery. Mercedes says the goal was to make the switch between electric assistance and the combustion engine close to unnoticeable, including at every stop-start restart at traffic lights.

The suspension has been retuned too, with a stiffer connection and new adjustable damping aimed at sharper handling without giving up long-distance ride comfort. Mercedes also points to a redesigned exhaust mounting system and extra sealing around the windshield and mirrors, part of a broader push to cut wind and road noise inside the cabin.

An AI Assistant That Remembers the Conversation

The new C-Class introduces the fourth generation of Mercedes’ MBUX infotainment system, now running on the company’s MB.OS software platform. Its headline feature is the MBUX Virtual Assistant, which draws on ChatGPT, Microsoft Bing and Google Gemini at once and can hold multi-turn conversations while remembering context from earlier in the exchange.

Ask it to find a song and it can identify the track from a vague description and start playing it. It can also answer questions about stock prices, weather, or ski conditions on a planned trip, and it appears on screen as one of three selectable animated avatars. Route guidance runs on Google technology, including Google Cloud’s new Automotive AI Agent, layered with a 3D real-time view of the car and surrounding traffic built from the vehicle’s camera and sensor array.

“The new C-Class proves that continuity and innovation are not mutually exclusive,” said Mathias Geisen, member of the board of management of Mercedes-Benz Group AG for sales and customer experience. “With its sporty elegance, electrified high-tech powertrain and intelligent support powered by MB.OS, it delivers what drivers truly need: proven reliability and innovative technology that creates real added value in everyday life.”

Standard Driver Assistance and a Sharper Look

Eight cameras, five radar sensors and 12 ultrasonic sensors come standard on the new C-Class, feeding a suite of driver and parking assistance systems. Maneuvering Assist, which can brake the car to a stop if it detects a collision risk while reversing at low speed, is included as standard, along with a 360-degree parking camera system and a function that can automatically reverse the car back along a route it just drove.

An optional augmented reality head-up display, carried over from the S-Class and EQS, appears in the C-Class for the first time. Mercedes is also offering its newest Digital Light headlights as an option, which use micro-LED technology and a new chip to project a sharper, wider beam while cutting power draw by up to half compared to the outgoing system.

Outside, the C-Class gets a new illuminated grille with a lit-up central star, restyled headlights and taillights with a star-shaped light pattern, and reworked bumpers. LED projectors built into the door sills light up the ground next to the car when the doors open. Two new paint colors join the lineup, Miami Silver Metallic and Moody Sky Grey Metallic, alongside a new optional AMG Line Plus package with sport seats, red seatbelts and gloss black trim.

What Buyers Still Don’t Know

Mercedes has not released US pricing, and the automaker is only committing to a first-half-2027 arrival date for now, meaning full order books and confirmed trim walks are still to come. The C-Class competes against the BMW 3 Series, Audi A4 and Genesis G70 in the compact luxury sedan class, a segment where buyers increasingly cross-shop tech features as closely as horsepower figures.

The reveal comes as part of Mercedes’ 140th anniversary celebrations, with the company driving three new S-Class sedans to 140 locations across six continents through October 2026 to mark the anniversary of Carl Benz’s original automobile patent. For C-Class buyers, the more immediate news is what shows up in showrooms next year: more power, a screen setup pulled from the brand’s flagship, and an assistant built to hold a real conversation.