The SL 550 is powered by the naturally aspirated 5.5‑liter V8 petrol engine (M273), producing 382 horsepower and delivering a smooth, powerful and refined driving experience. The engine is paired with Mercedes‑Benz’s 7‑speed automatic transmission (7G‑Tronic), providing both effortless cruising and quick, responsive shifts when driving more dynamically. The combination of the V8 engine, rear‑wheel drive and advanced suspension makes the car equally suited for relaxed touring and spirited driving.

The car is factory equipped with Active Body Control (ABC) suspension and semi‑active roll stabilization, offering an impressive balance between ride comfort and handling stability. The electrically operated folding steel roof allows the car to function both as a refined coupé and as an open roadster, making it adaptable to different seasons and driving preferences without compromise.

The color combination is elegant and timeless, finished in Tenorite Gray Metallic with a black/anthracite leather interior. The cabin reflects a high level of luxury, featuring burled walnut wood trim, multi‑contour seats with climate control for both driver and passenger, and an extensive list of comfort and convenience equipment. The AMG styling package with 18‑inch AMG double‑spoke wheels and the Sport Package USA give the car a more dynamic and athletic appearance while preserving its refined character.

The equipment specification is comprehensive and includes COMAND navigation, premium sound system, CD changer, SIRIUS satellite radio, Parktronic parking assist, bi‑xenon headlights with cornering illumination, Keyless‑Go entry and start, steering wheel with gearshift buttons, automatic climate control, auto‑dimming mirrors, and integrated garage door opener. Altogether, this equipment underscores the SL 550’s position as a top‑tier luxury roadster.

The chassis number WDBSK71F98F139551 appears consistently in factory records and VIN decoding data, confirming the model year, engine and specification beyond any doubt. The vehicle was originally built for the North American market, which is reflected in its instrumentation, software and equipment configuration.

Overall, this is a highly equipped and powerful Mercedes‑Benz SL 550 that combines classic V8 performance and long‑distance comfort with advanced technology and timeless design. A car aimed at the buyer seeking a true luxury roadster with authentic engine character, high comfort levels and one of the most well‑balanced generations of the SL‑Class.