2007 BMW 328xi

2007 BMW 328xi

Overview

The 2007 BMW 328xi, part of the E90 generation, is generally considered a reliable vehicle, especially given its performance-oriented nature. It features a robust inline-six engine and a capable all-wheel-drive system. While it offers a premium driving experience, like any complex German automobile, it can encounter specific issues that owners should be aware of. This analysis focuses on common mechanical and electrical concerns reported by owners and technicians, excluding routine maintenance. Understanding these potential problem areas can help in proactive maintenance and budgeting for repairs, ensuring the longevity and enjoyment of the 328xi.

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Engine

3.0L N52B30 I6

Valve Cover Gasket Leak

• Symptoms: Oil smell in the engine bay, visible oil leaks around the valve cover, potential for oil to drip onto exhaust components.
• Solution: Replacement of the valve cover gasket and potentially the valve cover itself if warped.
• Cost: $300 - $600

PCV System Failure

• Symptoms: Rough idle, increased oil consumption, whistling noises from the engine, potential for oil leaks.
• Solution: Replacement of the Positive Crankcase Ventilation (PCV) valve and associated hoses.
• Cost: $400 - $700

Water Pump Failure

• Symptoms: Overheating, coolant leaks, warning lights on the dashboard, whining noise from the front of the engine.
• Solution: Replacement of the electric water pump and thermostat.
• Cost: $600 - $1000

Transmission

6-Speed Automatic (GA6HP19Z)

Mechatronic Sleeve Leak

• Symptoms: Transmission fluid leaks from the mechatronic unit, potential for shifting issues, error codes related to transmission control.
• Solution: Replacement of the mechatronic sleeve and O-rings.
• Cost: $300 - $500

Torque Converter Issues

• Symptoms: Shuddering during acceleration, slipping gears, rough shifting, potential for complete transmission failure.
• Solution: Replacement of the torque converter.
• Cost: $1200 - $2000

6-Speed Manual

No widespread issues reported.

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

Suspension

Standard Chassis

Control Arm Bushing Wear

• Symptoms: Clunking noises over bumps, vague steering feel, uneven tire wear.
• Solution: Replacement of front control arm bushings or the entire control arm assembly.
• Cost: $400 - $800

Strut Mount Failure

• Symptoms: Popping or creaking noises when turning the steering wheel, especially at low speeds.
• Solution: Replacement of front strut mounts.
• Cost: $300 - $500

Electrical

General Electrical System

Window Regulator Failure

• Symptoms: Power windows not operating, window getting stuck in the down position, grinding noise when operating the window.
• Solution: Replacement of the window regulator and motor assembly.
• Cost: $250 - $450

Idrive System Glitches

• Symptoms: Screen freezing, unresponsiveness, error messages, intermittent functionality.
• Solution: Software updates, or in some cases, replacement of the iDrive controller or head unit.
• Cost: $500 - $1500

Exterior

Body and Trim

No widespread issues reported.

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

Interior

Cabin Components

HVAC Blower Motor Failure

• Symptoms: No air coming from vents, or intermittent airflow, strange noises from the dashboard.
• Solution: Replacement of the HVAC blower motor.
• Cost: $300 - $500

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Summary Verdict

The 2007 BMW 328xi offers a compelling blend of performance and luxury, with its inline-six engine and xDrive all-wheel-drive system being generally robust. However, potential owners should be aware of common issues such as oil leaks from the valve cover gasket and PCV system, as well as electric water pump failures. Transmission reliability is good, though some automatic transmission components like the mechatronic sleeve and torque converter can require attention. Suspension components, particularly control arm bushings and strut mounts, may need replacement with age and mileage. Electrical gremlins, like window regulators and iDrive system glitches, can also occur. Overall, while not immune to problems, the 328xi can be a reliable car with diligent maintenance and awareness of its specific potential weak points.