2007 BMW 550i

2007 BMW 550i

Overview

The 2007 BMW 550i, part of the E60 generation, is a performance-oriented luxury sedan known for its potent V8 engine and engaging driving dynamics. While generally well-regarded for its engineering, like any vehicle of this age and complexity, it has specific areas that have shown a propensity for issues. Owners often praise its comfortable ride and powerful acceleration, but potential buyers should be aware of common problems that can arise, particularly concerning the engine, electronics, and some suspension components. Regular maintenance is crucial for mitigating these potential concerns and ensuring the longevity of this sophisticated German automobile.

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Engine

4.8L V8 (N62B48)

Valve Stem Seals

• Symptoms: Blue smoke on startup, oil consumption.
• Solution: Replacement of valve stem seals.
• Cost: $1,500 - $2,500

Cooling System Leaks

• Symptoms: Overheating, coolant loss, visible leaks from hoses, water pump, or radiator.
• Solution: Replacement of faulty cooling system components (water pump, thermostat, hoses, radiator).
• Cost: $500 - $1,200

Oil Pan Gasket Leak

• Symptoms: Oil drips under the vehicle, oil smell.
• Solution: Replacement of the oil pan gasket.
• Cost: $400 - $800

Transmission

6-Speed Automatic (GM 6L45/6L50)

Transmission Fluid Leaks

• Symptoms: Rough shifting, slipping gears, low transmission fluid level warning.
• Solution: Repair or replacement of transmission seals, cooler lines, or transmission pan gasket.
• Cost: $300 - $900

Mechatronic Unit Failure

• Symptoms: Erratic shifting, transmission warning lights, inability to select gears.
• Solution: Repair or replacement of the mechatronic unit.
• Cost: $1,000 - $2,500

6-Speed Manual

No widespread issues reported.

• Symptoms: N/A
• Solution: N/A
• Cost: Varies

Suspension

Standard Chassis

Control Arm Bushings

• Symptoms: Clunking noises over bumps, vague steering feel, uneven tire wear.
• Solution: Replacement of worn control arm bushings.
• Cost: $300 - $600

Air Suspension Compressor (if equipped)

• Symptoms: Vehicle sagging on one side, compressor not engaging, error messages.
• Solution: Replacement of the air suspension compressor.
• Cost: $500 - $1,000

Electrical

General Electrical System

iDrive System Glitches

• Symptoms: Screen freezing, unresponsiveness, navigation issues.
• Solution: Software updates, module reset, or replacement of iDrive controller/head unit.
• Cost: $200 - $1,500

Window Regulator Failure

• Symptoms: Power windows not operating, window stuck in position.
• Solution: Replacement of the window regulator mechanism.
• Cost: $200 - $400

Battery Drain

• Symptoms: Car won’t start, battery dies quickly.
• Solution: Diagnosis and repair of parasitic draw, or replacement of battery.
• Cost: $150 - $500

Exterior

General Exterior

No Major Issues

• Symptoms: N/A
• Solution: N/A
• Cost: Varies

Interior

General Interior

Headliner Sagging

• Symptoms: Fabric detaching from the headliner board.
• Solution: Re-gluing or replacement of the headliner.
• Cost: $200 - $500

HVAC Blower Motor Resistor

• Symptoms: Fan only works on highest setting or not at all.
• Solution: Replacement of the blower motor resistor.
• Cost: $100 - $250

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Summary Verdict

The 2007 BMW 550i offers a compelling blend of performance and luxury, but its complexity means potential owners should budget for maintenance and repairs. The V8 engine, while powerful, is prone to issues like valve stem seal wear and cooling system leaks. Automatic transmission problems, particularly with the mechatronic unit, can be costly. Electrical gremlins, especially with the iDrive system, are also common. While the suspension and exterior are generally robust, interior components like the headliner can degrade over time. Despite these potential drawbacks, with diligent maintenance and prompt attention to emerging issues, the 550i can remain a rewarding vehicle to own.