2017 BMW 640i xDrive

Introduction

The 2017 BMW 640i xDrive is a luxury grand tourer powered by a 3.0L TwinPower Turbo inline-6 engine producing 315 horsepower and 330 lb-ft of torque. It is equipped with an eight-speed automatic transmission and xDrive all-wheel drive. The 640i is known for its potent engine, comfortable interior, and impressive handling. However, it has received mixed reviews concerning reliability.

Engine

• Inline-6 (B58)
  • Engine Oil Leak
    • Description/Symptoms: Leakage of engine oil from the valve cover gasket or oil pan gasket. Symptoms include oil spots under the vehicle and low oil level warnings.
    • Solution: Replacement of the faulty gasket.
    • Estimated Cost to Fix: $200 - $500+
    • Recalls: None Found
  • Timing Chain Failure
    • Description/Symptoms: Premature wear or failure of the timing chain, leading to engine misfires, reduced power, and potential catastrophic engine damage. Symptoms include rattling noises from the engine and illuminated Check Engine Light.
    • Solution: Replacement of the timing chain and related components.
    • Estimated Cost to Fix: $3,000 - $5,000+
    • Recalls: None Found
  • Turbocharger Failure
    • Description/Symptoms: Failure of the turbocharger, resulting in reduced engine power, smoke from the exhaust, and potential damage to other engine components. Symptoms include a noticeable loss of power and elevated exhaust temperatures.
    • Solution: Replacement of the turbocharger.
    • Estimated Cost to Fix: $2,000 - $3,000+
    • Recalls: None Found

Transmission

• Eight-speed Automatic (ZF 8HP50)
  • Transmission Fluid Leak
    • Description/Symptoms: Leakage of transmission fluid from the pan gasket or other seals. Symptoms include low fluid levels and potential transmission slipping or shuddering.
    • Solution: Replacement of the leaking gasket or seal.
    • Estimated Cost to Fix: $100 - $300+
    • Recalls: None Found
  • Harsh Shifting
    • Description/Symptoms: Rough or delayed gear changes, accompanied by jolting or shuddering. Symptoms can be intermittent or consistent.
    • Solution: Reprogramming of the transmission control module or replacement of the valve body.
    • Estimated Cost to Fix: $500 - $1,500+
    • Recalls: None Found

Suspension

• No Issues Found

Electrical

• Electrical Harness Failure
  • Description/Symptoms: Faulty electrical harness causing intermittent electrical issues, including flickering lights, power window failures, or malfunctioning instrument cluster. Symptoms can vary depending on the affected circuit.
  • Solution: Replacement of the faulty harness. Estimated Cost to Fix: $500 - $2,000+
  • Recalls: NHTSA Campaign Number 20V485000
• Battery Drain
  • Description/Symptoms: Rapid battery discharge, leading to difficulty starting the vehicle or complete battery failure. Symptoms include dim headlights, slow cranking, or dead battery.
  • Solution: Diagnosis of the source of the parasitic drain and repair or replacement of the affected component (e.g., alternator, battery, or module). Estimated Cost to Fix: $200 - $1,000+
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• Infotainment System Malfunctions
  • Description/Symptoms: Intermittent or persistent issues with the infotainment system, including frozen screens, unresponsive controls, or audio dropouts. Symptoms can vary depending on the specific system or software version.
  • Solution: Software updates, firmware reinstallation, or repair or replacement of the infotainment system. Estimated Cost to Fix: $200 - $1,000+
  • Recalls: None Found

Summary

The 2017 BMW 640i xDrive offers a powerful engine and impressive handling, but it has faced reliability concerns. Issues with the engine, transmission, and electrical system can be costly to repair, potentially raising ownership expenses. Owners should be aware of these potential problems and consider regular maintenance and diagnostic checks to minimize the risk of major breakdowns.