2009 Bmw 328I Specs – Your Essential Guide To Performance

Thinking about a 2009 BMW 328i or already own one? Understanding its core specifications is crucial for everything from routine maintenance to considering performance upgrades. This guide breaks down the essential details, helping you make informed decisions and keep your E90 running strong, whether you’re a DIY enthusiast or simply a careful owner.

The BMW 328i of the E90 generation represents a sweet spot for many enthusiasts, combining luxury, engaging driving dynamics, and a robust inline-six engine. This era of BMW is known for its blend of analog feel and modern comforts. Whether you’re a prospective buyer, a new owner, or a seasoned DIYer, knowing the intricate 2009 bmw 328i specs​ is your first step towards maximizing its potential and longevity.

This comprehensive guide will dive deep into its powertrain, chassis, dimensions, and crucial maintenance insights. It aims to empower you to confidently care for your Ultimate Driving Machine, addressing common questions and providing practical advice.

Unpacking the Core 2009 BMW 328i Specs​: Engine, Transmission, and Drivetrain

At the heart of the 2009 BMW 328i lies its renowned N52B30 engine. This naturally aspirated 3.0-liter inline-six is celebrated for its smoothness, reliability, and distinctive exhaust note. Understanding its specific details is fundamental for any owner.

This engine utilizes BMW’s advanced Valvetronic and Double-VANOS technologies. These systems optimize valve lift and timing, contributing to both power output and fuel efficiency.

The N52B30 Engine: Power and Characteristics

The N52B30 is a masterpiece of engineering, offering a balance of performance and everyday usability. It’s one of the last naturally aspirated inline-six engines BMW produced for the 3 Series in North America.

• Engine Type: N52B30 Inline 6-cylinder
• Displacement: 3.0 liters (2,996 cc)
• Horsepower: 230 hp (171 kW) at 6,500 rpm
• Torque: 200 lb-ft (271 Nm) at 2,750 rpm
• Redline: Approximately 7,000 rpm
• Fuel System: Port Fuel Injection
• Valvetrain: DOHC (Dual Overhead Camshaft) with 24 valves, Valvetronic (variable valve lift), and Double-VANOS (variable valve timing)

These figures highlight the engine’s linear power delivery, making it responsive across the entire RPM range. The early torque peak is particularly useful for city driving and spirited acceleration.

Transmission Options: Automatic vs. Manual

The 2009 328i offered drivers a choice between two excellent transmissions, each providing a distinct driving experience. Your choice impacts performance, fuel economy, and driving engagement.

• 6-speed Automatic (ZF 6HP19): This is a highly regarded automatic transmission known for its smooth shifts and intelligent programming. It features Steptronic manual shift mode.
• 6-speed Manual (GS6-17BG): For enthusiasts seeking maximum control and engagement, the manual transmission is the purist’s choice. It offers precise shifts and a direct connection to the drivetrain.

Both transmissions are robust when properly maintained. For automatic transmissions, timely fluid and filter changes, though often marketed as “lifetime,” are crucial for longevity, especially after 80,000 miles.

Drivetrain Configuration: RWD and xDrive

The 2009 328i was available in both rear-wheel drive (RWD) and all-wheel drive (AWD), known as xDrive. This choice significantly impacts handling characteristics and suitability for different climates.

• Rear-Wheel Drive (RWD): The classic BMW setup, offering balanced weight distribution and a pure, sporty driving feel. Ideal for dry climates and performance driving.
• xDrive All-Wheel Drive: Provides enhanced traction and stability in adverse weather conditions like snow or rain. It adds weight but offers peace of mind.

When considering the xDrive model, be aware of additional maintenance items like transfer case fluid changes. Also, ensure all four tires are of the same brand, model, and tread depth to prevent premature transfer case wear.

Chassis and Suspension Specifications: The E90 Foundation

The E90 chassis is celebrated for its rigid structure and finely tuned suspension. These elements are key contributors to the 3 Series’ reputation as a driver’s car. Understanding the chassis and suspension is vital for both performance and ride comfort.

Suspension Design and Components

The 328i features a sophisticated suspension system designed to balance comfort with dynamic handling. It’s a blend of proven designs and BMW’s continuous refinement.

• Front Suspension: Double-pivot spring-strut axle. This design effectively separates steering and suspension forces for precise handling and reduced torque steer.
• Rear Suspension: Five-link independent rear suspension. This multi-link setup provides excellent wheel control, enhancing both ride quality and grip.

Common wear items include control arm bushings, strut mounts, and shock absorbers. Inspecting these components during routine maintenance can prevent significant handling issues and uneven tire wear.

Steering and Braking Systems

BMW’s hydraulic power steering in the E90 generation offers excellent feedback, a characteristic often praised by enthusiasts. The braking system is equally capable, providing confident stopping power.

• Steering Type: Hydraulic power steering (rack-and-pinion).
• Front Brakes: Ventilated disc brakes (e.g., 300x24mm).
• Rear Brakes: Ventilated disc brakes (e.g., 300x20mm).

Regular brake fluid flushes (every two years) are critical to maintain braking performance and prevent corrosion within the system. Always use high-quality brake pads and rotors to ensure optimal safety and durability.

Wheels, Tires, and Dimensions: Practical 2009 bmw 328i specs​ for Everyday Use

Beyond the mechanicals, the physical dimensions and rolling stock of your 328i play a significant role in its appearance, handling, and practicality. These are the 2009 bmw 328i specs​ you interact with daily.

Standard and Optional Wheel Sizes

The 2009 328i came with a variety of wheel options, influencing both aesthetics and ride quality. Larger wheels generally offer better handling but can lead to a firmer ride.

• Standard: 16-inch alloy wheels (e.g., 205/55R16 tires)
• Optional: 17-inch or 18-inch alloy wheels (e.g., 225/45R17, 225/40R18 front / 255/35R18 rear)

When replacing tires, ensure you match the recommended sizes and load ratings. For xDrive models, maintaining consistent tire diameters across all four wheels is paramount to prevent transfer case issues.

Exterior and Interior Dimensions

Understanding the car’s size is important for parking, garage fitment, and interior space considerations. The E90 3 Series offers a compact yet comfortable package.

• Length: 178.2 inches (4526 mm)
• Width: 70.9 inches (1801 mm)
• Height: 55.9 inches (1420 mm)
• Wheelbase: 108.7 inches (2761 mm)
• Curb Weight: Approximately 3,351 lbs (1,520 kg) for RWD sedan, slightly more for xDrive/wagon.
• Trunk Volume: 12.0 cubic feet (340 liters)

The relatively low curb weight for a luxury sedan contributes to its agile handling. The trunk space is adequate for most daily needs, but larger items might require the fold-down rear seats, if equipped.

Key Fluids and Capacities: Essential Maintenance Insights

Proper fluid management is the cornerstone of any vehicle’s longevity, and the 2009 328i is no exception. Adhering to fluid specifications and change intervals is critical.

Engine Oil Specifications and Capacity

Using the correct engine oil is vital for the N52 engine’s Valvetronic system and overall health. BMW specifies synthetic oils meeting particular standards.

• Oil Type: BMW Longlife-01 (LL-01) synthetic oil (e.g., 5W-30 or 5W-40).
• Capacity: Approximately 6.9 quarts (6.5 liters) with filter change.

Regular oil changes, typically every 7,500 to 10,000 miles or annually, are far more beneficial than strictly following BMW’s extended service intervals, especially for older vehicles or spirited driving. Always use a genuine BMW or OEM-quality oil filter.

Coolant, Brake Fluid, and Power Steering Fluid

These fluids are often overlooked but are just as important as engine oil for the reliable operation of your 328i.

• Coolant Type: BMW-specific blue coolant (G48 or equivalent) mixed with distilled water (50/50 ratio).
• Coolant Capacity: Approximately 8.4-8.9 quarts (7.9-8.4 liters).
• Brake Fluid Type: DOT 4.
• Power Steering Fluid Type: CHF 11S hydraulic fluid.

Coolant should be flushed every 3-4 years. Brake fluid should be flushed every two years. Power steering fluid generally lasts longer but should be checked for color and level during inspections. Discolored fluid indicates a need for replacement.

Common Issues and Performance Considerations for the 2009 BMW 328i

While the N52 engine and E90 platform are generally robust, like any vehicle, they have their common quirks and areas that benefit from proactive maintenance. Understanding these helps you keep your 2009 bmw 328i specs​ performing optimally.

Typical E90 328i Problem Areas

Being aware of these common issues allows you to identify potential problems early and address them before they become major repairs.

• Valve Cover Gasket (VCG) Leaks: A very common oil leak, often manifesting as burning oil smell or visible oil around the valve cover.
• Oil Filter Housing Gasket (OFHG) Leaks: Another prevalent oil leak, which can drip onto the serpentine belt, causing it to shred. This can also contaminate the power steering system if not addressed promptly.
• Electric Water Pump Failure: The N52 uses an electric water pump, which can fail without warning, leading to overheating. Proactive replacement around 80,000-100,000 miles is often recommended.
• VANOS Solenoid Issues: Can cause rough idling, reduced power, and check engine lights. Cleaning or replacing these solenoids often resolves the issue.
• Eccentric Shaft Sensor Leaks: This sensor, part of the Valvetronic system, can leak oil into its electrical connector, causing engine performance issues.
• Window Regulator Failures: A common electrical/mechanical issue across many BMW models of this era.

When tackling any of these repairs, ensure you have the correct tools, such as Torx sockets and specialized BMW tools. Always prioritize safety: disconnect the battery, allow the engine to cool, and wear appropriate personal protective equipment.

Performance Enhancements and Limitations

The naturally aspirated N52 is a fantastic engine, but its performance upgrade potential differs significantly from turbocharged counterparts. Understanding its inherent 2009 bmw 328i specs​ helps set realistic expectations.

• Intake and Exhaust: Aftermarket cold air intakes and cat-back exhaust systems can slightly improve throttle response and enhance the engine’s sound. Significant power gains are minimal.
• Tune: Basic ECU tunes can optimize fuel mapping and timing, potentially yielding minor horsepower gains (5-15 hp) and improved throttle response.
• Suspension Upgrades: Coilovers, stiffer sway bars, and upgraded bushings can dramatically improve handling and reduce body roll, transforming the car’s dynamic capabilities.
• Brake Upgrades: Performance pads, braided steel brake lines, and larger rotors can enhance braking feel and fade resistance, especially for spirited driving or track use.

For substantial power increases, supercharger kits are available but are a significant investment. Most owners focus on maintaining the N52’s reliability and enhancing the car’s already excellent handling characteristics.

Frequently Asked Questions About 2009 BMW 328i Specs

Here are some common questions prospective buyers and current owners have regarding the 2009 BMW 328i.

What kind of engine does the 2009 BMW 328i have?

The 2009 BMW 328i is equipped with the N52B30 engine, a naturally aspirated 3.0-liter inline-six. This engine is known for its smoothness, reliability, and use of Valvetronic and Double-VANOS technologies.

What is the horsepower of a 2009 BMW 328i?

The 2009 BMW 328i produces 230 horsepower (171 kW) at 6,500 rpm and 200 lb-ft (271 Nm) of torque at 2,750 rpm. These 2009 bmw 328i specs​ provide a balanced performance for daily driving and spirited runs.

Is the 2009 BMW 328i reliable?

Generally, the 2009 BMW 328i with the N52 engine is considered one of BMW’s more reliable modern engines. However, like all cars, it has common wear items and potential failure points such as the electric water pump, valve cover gasket, and oil filter housing gasket. Proactive maintenance is key to its longevity.

What type of fuel does a 2009 BMW 328i require?

The 2009 BMW 328i requires premium unleaded gasoline with a minimum octane rating of 91 AKI. Using lower octane fuel can lead to reduced performance and potential engine damage over time due to pre-ignition.

Does the 2009 328i have an oil dipstick?

No, the 2009 BMW 328i (E90 generation) with the N52 engine does not have a traditional physical oil dipstick. Instead, it relies on an electronic oil level sensor, which displays the oil level on the iDrive screen or instrument cluster. Always check the level when the engine is warm and has been off for a few minutes.

Understanding the full range of 2009 bmw 328i specs​ is not just about numbers; it’s about empowering yourself as an owner or enthusiast. From the robust N52 engine to its balanced chassis, the E90 328i remains a fantastic driver’s car. By familiarizing yourself with its core components, common issues, and proper maintenance, you can ensure your BMW continues to deliver the “Ultimate Driving Machine” experience for years to come.

Always prioritize safety in your DIY endeavors, using proper tools and following manufacturer guidelines. If a task feels beyond your skill level, don’t hesitate to consult a trusted BMW specialist. Happy driving, and keep those wheels turning safely!