2017 BMW 640i

Introduction

The 2017 BMW 640i is a luxury grand tourer that offers a blend of performance and comfort. It is powered by a 3.0-liter turbocharged inline-six engine that produces 335 horsepower and 330 lb-ft of torque, paired with an eight-speed automatic transmission. The 640i boasts a sleek exterior design, a spacious and well-appointed interior, and an array of advanced technology features. Despite its impressive attributes, the 640i has been plagued by several issues that have drawn criticism from owners.

Engine

• B58 3.0L Turbocharged Inline-Six

  • Intake Valve Carbon Buildup
    • Description/Symptoms: Over time, carbon deposits can accumulate on the intake valves, restricting airflow and reducing engine performance. Symptoms include reduced power output, rough idling, and increased fuel consumption.
    • Solution: Remove the intake manifold and clean the valves.
    • Estimated Cost to Fix: $500 - $1,000
    • Recalls: None Found
  • Turbocharger Actuator Failure
    • Description/Symptoms: The turbocharger actuator can fail, resulting in a loss of boost pressure. This can lead to reduced power output and limp mode operation.
    • Solution: Replace the turbocharger actuator.
    • Estimated Cost to Fix: $1,500 - $2,500
    • Recalls: None Found

Transmission

• ZF 8HP50 Eight-Speed Automatic Transmission

  • Shifting Problems
    • Description/Symptoms: The transmission may experience rough or hesitant shifts, particularly during low-speed maneuvers.
    • Solution: Update the transmission software or replace the valve body.
    • Estimated Cost to Fix: $500 - $1,500
    • Recalls: None Found
  • Transmission Fluid Leaks
    • Description/Symptoms: The transmission may develop leaks from the pan, seals, or lines, causing a loss of fluid and potential damage to the transmission.
    • Solution: Identify and repair the source of the leak.
    • Estimated Cost to Fix: $500 - $2,000
    • Recalls: None Found

Suspension

• No Issues Found

Electrical

• Battery Drain * Description/Symptoms: The battery may discharge prematurely, leaving the vehicle unable to start. * Solution: Diagnose and repair the source of the drain, which can be caused by a variety of factors such as faulty modules, parasitic accessories, or a failing battery. * Estimated Cost to Fix: $100 - $500 * Recalls: None Found

Exterior

• Rear Taillight Condensation * Description/Symptoms: Moisture can accumulate inside the rear taillights, causing condensation and impairing visibility. * Solution: Replace the affected taillights with updated units. * Estimated Cost to Fix: $500 - $1,000 * Recalls: None Found

Interior

• iDrive System Crashing * Description/Symptoms: The iDrive infotainment system may experience occasional crashes or freeze, rendering it unresponsive. * Solution: Update the software or replace the head unit. * Estimated Cost to Fix: $1,000 - $2,000 * Recalls: None Found
• Adaptive Cruise Control Malfunction * Description/Symptoms: The adaptive cruise control feature may malfunction, failing to maintain a safe distance from other vehicles or braking abruptly. * Solution: Recalibrate or replace the sensors. * Estimated Cost to Fix: $500 - $1,500 * Recalls: None Found

Summary

The 2017 BMW 640i has been met with mixed reviews due to several recurring issues. The most common problems include intake valve carbon buildup, turbocharger actuator failure, and shifting problems with the transmission. While the interior and exterior issues are generally minor, the electrical and mechanical faults can be costly to repair. Owners should be aware of these potential problems and take appropriate measures to address them.