2008 BMW 128i

The 2008 BMW 128i is a rear-wheel-drive coupe and convertible known for its balanced handling, smooth inline-6 engine, and classic BMW driving experience. The 128i is only available with the 3.0L N52 inline-6 engine. This engine produces 230 horsepower and 200 lb-ft of torque. Transmission options include a 6-speed manual and a 6-speed automatic. Owners generally appreciate the 128i’s engaging driving dynamics and relatively simple mechanicals compared to later BMW models. However, common complaints often revolve around maintenance costs and some specific component failures as the car ages.

Engine

N52 3.0L Inline-6

• Oil Filter Housing Gasket Leak
  • Description/Symptoms: Oil leak from the oil filter housing. This can lead to low oil levels and potential engine damage if not addressed. Visible oil drips may appear under the car.
  • Solution: Replace the oil filter housing gasket.
  • Estimated Cost to Fix: $250 - $450+
  • Recalls: None Found
• Valve Cover Gasket Leak
  • Description/Symptoms: Oil leak from the valve cover gasket. Similar to the oil filter housing gasket, this can cause low oil levels and a burning oil smell.
  • Solution: Replace the valve cover gasket.
  • Estimated Cost to Fix: $300 - $500+
  • Recalls: None Found
• VANOS Solenoid Issues
  • Description/Symptoms: Reduced engine performance, rough idle, and potential error codes related to the VANOS (Variable Valve Timing) system.
  • Solution: Clean or replace the VANOS solenoids.
  • Estimated Cost to Fix: $150 - $400+
  • Recalls: None Found
• DISA Valve Failure
  • Description/Symptoms: Rattling noise from the engine bay, loss of power, and potential check engine light. The DISA (Differential Air Intake System) valve controls airflow into the intake manifold.
  • Solution: Replace the DISA valve.
  • Estimated Cost to Fix: $200 - $400+
  • Recalls: None Found

Transmission

6-Speed Automatic (GM GA6L45R)

• Valve Body Issues
  • Description/Symptoms: Hard or erratic shifting, slipping between gears, or failure to shift properly.
  • Solution: Replacing or rebuilding the valve body.
  • Estimated Cost to Fix: $800 - $2000+
  • Recalls: None Found

6-Speed Manual

• No Issues Found

Suspension

• Strut and Shock Failure
  • Description/Symptoms: Bouncy ride, poor handling, excessive body roll, and clunking noises over bumps.
  • Solution: Replace the struts and/or shocks.
  • Estimated Cost to Fix: $600 - $1200+ (for all four corners)
  • Recalls: None Found
• Control Arm Bushing Wear
  • Description/Symptoms: Clunking noises from the front suspension, vague steering feel, and uneven tire wear.
  • Solution: Replace the worn control arm bushings or the entire control arm assembly.
  • Estimated Cost to Fix: $300 - $600+ (per control arm)
  • Recalls: None Found

Electrical

• Battery Drain
  • Description/Symptoms: Car battery drains quickly, especially when the car is not in use. This can be caused by a faulty module or accessory that is not shutting down properly.
  • Solution: Diagnose and repair the source of the battery drain. This may involve replacing a faulty module or accessory, or fixing a wiring issue.
  • Estimated Cost to Fix: $100 - $500+ (depending on the source of the drain)
  • Recalls: None Found
• Window Regulator Failure
  • Description/Symptoms: Window moves slowly, erratically, or not at all. Clicking or grinding noises may be heard.
  • Solution: Replace the window regulator.
  • Estimated Cost to Fix: $250 - $400+
  • Recalls: None Found

Exterior

• Convertible Top Issues (Convertible Model Only)
  • Description/Symptoms: Failure of the convertible top to open or close properly. This can be caused by motor failure, hydraulic issues, or sensor problems.
  • Solution: Diagnose and repair the convertible top system. This may involve replacing the motor, hydraulic pump, or sensors.
  • Estimated Cost to Fix: $500 - $2000+ (depending on the severity of the issue)
  • Recalls: None Found

Interior

• Sticking Door Lock Actuators
  • Description/Symptoms: Intermittent door locking or unlocking issues. Doors may not lock or unlock with the key fob or interior switches.
  • Solution: Replace the faulty door lock actuator.
  • Estimated Cost to Fix: $200-$400+
  • Recalls: None Found

Summary

The 2008 BMW 128i is a fun-to-drive car, but owners should be aware of potential issues related to engine oil leaks, suspension wear, and electrical problems. The severity of these issues ranges from minor annoyances to more significant repairs. Estimated repair costs can vary widely depending on the specific problem and the mechanic performing the work. Regular maintenance and addressing issues promptly can help to keep the 128i running smoothly.