Why This Car Is Special

The 2004 Mercedes-Benz S600 sits at the top of the W220 S-Class lineup, and it earned that position through one of the most capable engines Mercedes-Benz ever put into a production sedan. Under the hood is the M275 5.5-liter twin-turbocharged V12, rated at 493 horsepower and 590 lb-ft of torque. That torque figure is what separates the S600 from everything else in the class — it arrives early in the rev range and stays flat across a wide band, which is why the car accelerates with almost no drama at any speed. Mercedes-Benz quoted a 0-60 time of around 4.5 seconds for the S600, which in 2004 was a serious number for a full-size luxury sedan weighing in at over 4,400 pounds.

The W220 generation ran from 1999 through 2006. The S600 specifically was never a high-volume car — Mercedes-Benz produced it in limited numbers compared to the S430 and S500, and it was priced accordingly at new. The original MSRP on a 2004 S600 was well over $120,000, putting it above the AMG variants in base price and in direct competition with the Bentley Flying Spur and Rolls-Royce Silver Seraph in terms of what the engine alone communicated to the buyer.

One detail worth understanding: the W220 S600 used a five-speed automatic transmission rather than the seven-speed unit found in some of its contemporaries. Mercedes-Benz paired this gearbox specifically to handle the V12's torque output, and it shifts smoothly without calling attention to itself. The car also rides on Airmatic air suspension, which continuously adjusts damping based on road conditions and speed. This system is one of the reasons the S600 remains one of the quietest and most controlled highway sedans ever built.

This particular car comes with paperwork documenting recent repairs and upgrades, which is meaningful with any W220 S600. These cars reward buyers who have kept up with maintenance, and documented service history is the clearest signal that a previous owner took the car seriously. The undercarriage photos show solid structure with no visible corrosion — a meaningful detail on a Florida-based vehicle.

Features List

• 5.5L Twin-Turbo V12 — 493 HP
• 5-Speed Automatic Transmission
• Airmatic Air Suspension
• Bi-Xenon Projector Headlights
• Aftermarket 20-Inch Mercedes Alloy Wheels
• Tinted Windows
• Power Sunroof
• Quad Exhaust Tips
• Dual-Zone Automatic Climate Control
• Navigation System (COMAND)
• BOSE Surround Sound System
• Heated and Ventilated Front Seats
• Heated Rear Seats
• Power Memory Front Seats
• Rear Seat Adjustment Controls
• Burled Walnut Interior Trim
• Multi-Function Leather Steering Wheel
• Power Windows and Locks
• Keyless-Go Entry
• Parktronic Parking Sensors
• Cruise Control
• Pre-Safe Collision Preparation System
• Disc Brakes — All Four Corners
• SRS Airbags
• Power Steering
• Mercedes-Benz Illuminated Door Sill Plates
• Soft-Close Doors

Mechanical

The M275 engine in this car is a 5.5-liter twin-turbocharged V12 — two banks of six cylinders with a turbocharger on each bank. At 493 horsepower and 590 lb-ft of torque, it was among the most powerful engines available in any production luxury sedan in 2004. The engine photos show the V12 cam cover clearly, and the engine bay presents cleanly with no visible fluid leaks or deteriorated hoses from what can be seen in the photos.

The five-speed automatic transmission is specific to the V12 application in this generation. It was engineered to manage the torque load that would overwhelm a standard unit, and it operates through a fully electronic shift control system with no mechanical linkage to the shifter.

Airmatic suspension is standard equipment on the S600 and does two things simultaneously: it adjusts ride height based on load and speed, and it continuously varies damping stiffness through electronically controlled struts. The result is a car that drives smaller than its footprint suggests and absorbs road imperfections without translating them into the cabin.

Stopping hardware is four-wheel disc brakes, supported by the standard ABS and stability control systems that were part of the W220's safety package. Parktronic sensors at the front and rear assist with parking in tight spaces, and the Pre-Safe system — one of the first collision preparation systems in a production car when Mercedes-Benz introduced it in 2002 — tightens seatbelts and adjusts seat positions in the event the car detects an imminent collision.

The undercarriage photos, taken on a lift, show the exhaust routing clearly. The car runs a proper dual-exhaust system from the V12 with four polished tips at the rear. The floorpan and subframe appear solid, which matters on any vehicle with this level of complexity underneath.

Interior

The 2004 Mercedes-Benz S600 interior is finished in black leather throughout, with burled walnut trim covering the dashboard, center console, door inserts, and steering wheel spokes. The wood grain is consistent from panel to panel, which is something Mercedes-Benz paid close attention to on the S600 as the flagship of the range. Lower trims in the W220 lineup used different wood species and less coverage — the S600 received the full treatment.

Front seats are power-adjustable with memory settings and include both heating and ventilation functions. The ventilation system draws air through perforations in the leather to cool the seat surface, which is particularly useful in Florida's climate. Rear passengers also get heated seats and their own adjustment controls mounted in the rear door panels, allowing them to recline the front seatbacks independently.

The COMAND navigation and infotainment system is the factory unit, integrating navigation, audio, and communication functions through a single controller. It is a push-and-rotate input system typical of the era, and it controls the BOSE surround sound system, which uses multiple speakers mounted throughout the cabin including in the doors and rear deck.

Keyless-Go entry and push-button starting were included on the S600 — the car uses a proximity key rather than a conventional key slot for starting, which was forward-thinking for a 2004 model. The soft-close door system uses electric motors to pull doors shut from a partially closed position, a detail that communicates build quality every time a door is closed. The Mercedes-Benz illuminated door sill plates light up the brand script when the door is opened.

The instrument cluster uses a hooded binnacle design with orange-tinted gauge needles and a small information display between the speedometer and tachometer. The speedometer reads to 160 mph, which reflects the car's electronic governor rather than any artificial restriction on the engine itself.

Exterior

The 2004 Mercedes-Benz S600 is finished in black over a black interior — a combination that suits the W220's proportions well. The body design came from Bruno Sacco's team at Mercedes-Benz and is characterized by flush body panels, a low greenhouse, and minimal ornamentation. The V12 badge on the front fenders is the only external indicator that this car is not the standard S500.

The bi-xenon projector headlights use high-intensity discharge bulbs and a projector lens system to produce a focused, wide beam pattern. They were a significant improvement over halogen units when the W220 was new, and they remain effective by current standards.

This car rides on aftermarket 20-inch Mercedes-branded alloy wheels with a multi-spoke design in a two-tone machined and painted finish. The factory wheel option on the 2004 S600 was an 18-inch wheel, so the 20-inch upgrade changes the visual stance of the car noticeably. The tires visible in the photos appear to be in serviceable condition.

The windows are tinted, which is both practical in Florida's sun and consistent with the overall presentation of the car. At the rear, four exhaust tips exit through a clean bumper cutout — two per side — which is correct for the V12 application and distinguishes it visually from the four-cylinder and V8 variants.

The undercarriage photos show underbody panels intact and no visible rust or corrosion on the frame rails, subframe, or suspension components. The suspension geometry visible in the lift photos shows a multi-link rear setup and a well-maintained front end.

Conclusion

The 2004 Mercedes-Benz S600 is one of the few cars from its era that still makes a clear argument for itself based on engineering alone. The twin-turbocharged V12, factory air suspension, and full complement of active safety systems were genuinely rare in 2004 and remain impressive today. Finding one with documented repair and upgrade history — and a clean undercarriage — narrows the field considerably. This car presents well mechanically and cosmetically, and the paperwork gives a buyer something concrete to evaluate rather than guessing at history.

If you want to see the service documentation, discuss the mechanical condition in detail, or arrange an inspection, call Skyway Classics in Sarasota, Florida at 941-254-6608.

Disclaimer

Information found on the website is presented as given to us by the owner of the car, whether on consignment or from the owner we bought it from. Some Photos, materials for videos, descriptions and other information are provided by the consignor/seller and is deemed reliable, but Skyway Classics does not warranty or guarantee this information. Skyway Classics is not responsible for information that may incorrect or a publishing error. The decision to purchase should be based solely on the buyers personal inspection of the vehicle or by a professional inspection service prior to offer or purchase being made.