2009 BMW 325i

The 2009 BMW 325i is part of the E90 3-Series generation, known for its blend of sporty handling and luxury features. The 325i model is equipped with a 3.0-liter inline-6 engine, designated as the N52B30. This engine produces 215 horsepower and 199 lb-ft of torque. Other engine options for the 2009 3-Series included the more powerful N54 twin-turbo inline-6 in the 335i and the smaller displacement N52 in the 323i. Transmission options available for the 325i include a 6-speed manual and a 6-speed automatic. Owners often praise the 325i for its engaging driving dynamics, comfortable interior, and classic BMW styling. Common dislikes include the potential for costly repairs, especially related to electrical components and oil leaks, as well as the run-flat tires which often provide a harsher ride.

Engine

N52B30 (3.0L Inline-6)

• Oil Filter Housing Gasket Leak
  • Description/Symptoms: Oil leaks from the oil filter housing gasket, often dripping onto the exhaust manifold, causing a burning smell. Visible oil stains may appear on the engine.
  • Solution: Replace the oil filter housing gasket.
  • Estimated Cost to Fix: $300 - $600
  • Recalls: None Found
• Valve Cover Gasket Leak
  • Description/Symptoms: Oil leaks from the valve cover gasket, leading to a burning oil smell and potential oil drips.
  • Solution: Replace the valve cover gasket.
  • Estimated Cost to Fix: $400 - $800
  • Recalls: None Found
• VANOS Solenoid Failure
  • Description/Symptoms: Engine hesitation, rough idle, reduced power, and potential check engine light with VANOS-related codes.
  • Solution: Replace the faulty VANOS solenoid(s).
  • Estimated Cost to Fix: $200 - $500 per solenoid
  • Recalls: None Found

Transmission

6-Speed Automatic (GM 6L45R)

• Slipping or Erratic Shifting
  • Description/Symptoms: The transmission may slip between gears, shift harshly, or fail to shift at all. This is often caused by wear in the valve body or solenoids.
  • Solution: Replacing or rebuilding the transmission. In some cases, replacing the valve body and/or solenoids may resolve the issue.
  • Estimated Cost to Fix: $3,000 - $5,000 for a rebuild or replacement, $500 - $1500 for valve body/solenoid replacement.
  • Recalls: None Found

Suspension

• Cracked or Broken Coil Springs
  • Description/Symptoms: A loud clunking or popping noise from the suspension, especially when going over bumps or turning. The vehicle may sit lower on one side.
  • Solution: Replace the cracked or broken coil spring(s). It’s recommended to replace both springs on the same axle.
  • Estimated Cost to Fix: $300 - $700 per pair
  • Recalls: None Found
• Worn Control Arm Bushings
  • Description/Symptoms: Clunking or rattling noise from the front suspension, especially when driving over uneven surfaces. Reduced steering precision and a wandering feeling in the front end.
  • Solution: Replace the worn control arm bushings or the entire control arm assembly.
  • Estimated Cost to Fix: $200 - $600 per control arm.
  • Recalls: None Found

Electrical

• Faulty Window Regulator
  • Description/Symptoms: Window fails to operate properly, making unusual noises, or becoming stuck in an open or closed position.
  • Solution: Replace the faulty window regulator.
  • Estimated Cost to Fix: $250 - $500 per window
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: The battery drains quickly, especially overnight, making the car difficult or impossible to start. This can be caused by a parasitic drain from a faulty module or electrical component.
  • Solution: Diagnose the source of the parasitic drain and repair or replace the faulty component. Common culprits include the comfort access system, radio, and various control modules.
  • Estimated Cost to Fix: $100 - $1000+ depending on the complexity of the issue and the cost of the replacement component.
  • Recalls: None Found

Exterior

• Rust on Body Panels
  • Description/Symptoms: Rust formation on body panels, particularly around wheel wells, door edges, and trunk lid. This is more common in areas with harsh winters and road salt.
  • Solution: Repair or replace the affected body panels. Preventative measures such as regular washing and waxing can help minimize rust.
  • Estimated Cost to Fix: $200 - $1000+ per panel depending on the extent of the rust and the repair method.
  • Recalls: None Found

Interior

• Sticking Sunroof
  • Description/Symptoms: The sunroof may stick or bind when opening or closing, making unusual noises. This can be caused by a lack of lubrication or debris in the sunroof tracks.
  • Solution: Clean and lubricate the sunroof tracks. If the problem persists, the sunroof motor or mechanism may need to be replaced.
  • Estimated Cost to Fix: $50 - $150 for cleaning and lubrication, $300 - $800 for motor or mechanism replacement.
  • Recalls: None Found

Summary

The 2009 BMW 325i, while a desirable car, has a range of potential issues. The most common engine problems relate to oil leaks, which can be relatively inexpensive to fix, but should not be ignored. Transmission issues can be costly if a full rebuild or replacement is required. Suspension and electrical issues can also contribute to the overall cost of ownership. Potential buyers should be aware of these potential problems and have the vehicle thoroughly inspected before purchasing to avoid expensive surprises.