BMW 550i 2003-2010 Specifications

The 2003-2010 BMW 550i is equipped with a 4.8L V8 engine producing 360 horsepower and 360 lb-ft of torque. This engine is known for its smooth power delivery and strong performance across the rev range. Compared to other BMW engines from the same era, it offers a balance of power and refinement, making it suitable for both spirited driving and daily commuting.

The BMW 550i comes with a 6-speed automatic transmission as standard. This transmission features Steptronic manual mode, allowing drivers to shift gears manually for a more engaging driving experience. The transmission is known for its smooth shifts and quick response, enhancing the car's overall performance.

Standard safety features include ABS, traction control, stability control, front and side airbags, and a tire pressure monitoring system. Optional features include adaptive headlights, night vision, and a rearview camera. The car also features a robust body structure designed to protect occupants in the event of a collision.

The BMW 550i achieves an EPA-estimated 15 mpg in the city and 23 mpg on the highway. While this is competitive for a V8-powered luxury sedan, it is slightly less efficient than some competitors with smaller engines or hybrid options. However, the 550i's performance and refinement justify the trade-off in fuel economy for many drivers.

BMW recommends an oil change every 15,000 miles or 12 months, whichever comes first. Other maintenance tasks, such as brake fluid changes, air filter replacements, and spark plug replacements, should be performed at intervals specified in the owner's manual. Regular inspections and servicing are crucial to maintaining the car's performance and reliability.

Standard features include leather upholstery, dual-zone automatic climate control, a premium sound system, and a sunroof. Optional features include adaptive suspension, heated and ventilated seats, a navigation system, and a head-up display. The 550i also offers advanced driver assistance features, such as adaptive cruise control and lane departure warning.

The BMW 550i offers 14.0 cubic feet of trunk space and comfortable seating for five passengers. While the trunk space is slightly less than some competitors, the interior is well-appointed and offers ample legroom and headroom for both front and rear passengers. The car's luxurious materials and attention to detail make it a standout in its class.

The BMW 550i is not rated for towing. However, it offers a payload capacity of approximately 900 pounds, allowing for ample luggage and passenger weight. For those needing towing capabilities, BMW offers other models in its lineup that are better suited for such tasks.