2016 BMW 640i xDrive Gran Coupe

The 2016 BMW 640i xDrive Gran Coupe is a sleek, four-door luxury coupe combining elegant design with sporty performance. The model you specified is equipped with a 3.0-liter turbocharged inline-6 engine (N55 engine family) producing 315 horsepower and 330 lb-ft of torque, paired with an 8-speed automatic transmission. Other engine options available for the 2016 6 Series Gran Coupe include a 4.4-liter turbocharged V8 in the 650i models, and a diesel option in some markets (though not typically sold in the US). Owners often praise the car’s stylish appearance, comfortable interior, and smooth ride quality. Common complaints center around the high cost of maintenance and repairs, as well as some electronic gremlins.

Engine

3.0L Turbocharged Inline-6 (N55)

• Oil Leaks
  • Description/Symptoms: Oil leaks are common as the car ages. Frequent areas include the valve cover gasket, oil filter housing gasket, and oil pan gasket. Symptoms include visible oil drips, burning oil smell, and low oil level warnings.
  • Solution: Replacing the affected gaskets. Clean the surrounding areas of any accumulated oil residue.
  • Estimated Cost to Fix: $300 - $1000+ depending on the location of the leak and if it is DIY or brought to a shop.
  • Recalls: None Found
• Coolant Leaks
  • Description/Symptoms: Coolant leaks can occur from the expansion tank, radiator hoses, or water pump. Symptoms include low coolant level warnings, visible coolant leaks, and overheating.
  • Solution: Replacing the leaking component(s).
  • Estimated Cost to Fix: $200 - $800+
  • Recalls: None Found

Transmission

8-Speed Automatic (ZF 8HP)

• Rough Shifting/Hesitation
  • Description/Symptoms: Some owners report experiencing rough or delayed shifts, particularly when cold. There can also be hesitation when accelerating from a stop.
  • Solution: In some cases, a transmission fluid flush and filter change can alleviate the symptoms. However, if the issue persists, it may require valve body replacement or transmission rebuild/replacement.
  • Estimated Cost to Fix: $300 - $500 (fluid flush/filter), $1500 - $6000+ (valve body/rebuild/replacement)
  • Recalls: None Found

Suspension

• Air Suspension Issues (Rear)
  • Description/Symptoms: The rear air suspension (if equipped) can develop leaks in the air springs, leading to the car sagging in the rear, particularly overnight. The air compressor can also fail.
  • Solution: Replacing the leaking air spring(s) and/or air compressor.
  • Estimated Cost to Fix: $500 - $1500+ per air spring, $500 - $1000+ for the compressor.
  • Recalls: None Found

Electrical

• Battery Drain
  • Description/Symptoms: Excessive battery drain can occur, leading to a dead battery, especially if the car sits for extended periods. This is often attributed to a faulty module not going into sleep mode.
  • Solution: Diagnosing and replacing the faulty module. A parasitic draw test is often required.
  • Estimated Cost to Fix: $200 - $1000+ depending on the faulty module.
  • Recalls: None Found
• iDrive System Issues
  • Description/Symptoms: iDrive malfunctions are occasionally reported, including screen freezing, system reboots, and loss of functionality.
  • Solution: Software updates can sometimes resolve the issue. In other cases, the iDrive controller or head unit may need to be replaced.
  • Estimated Cost to Fix: $100 - $500 (software update), $500 - $2000+ (controller/head unit replacement).
  • Recalls: None Found

Exterior

• Adaptive Headlight Malfunctions
  • Description/Symptoms: The adaptive headlights can sometimes malfunction, displaying error messages or failing to adjust properly.
  • Solution: Requires diagnosis and potential replacement of the headlight unit or associated modules.
  • Estimated Cost to Fix: $500 - $2000+ per headlight unit.
  • Recalls: None Found

Interior

• Seat Heater Malfunctions
  • Description/Symptoms: Seat heaters can fail to work properly, either not heating at all or overheating.
  • Solution: Replacing the heating element or associated control module.
  • Estimated Cost to Fix: $200 - $800+
  • Recalls: None Found

Summary

The 2016 BMW 640i xDrive Gran Coupe offers a luxurious and sporty driving experience, but potential buyers should be aware of common issues. Oil and coolant leaks are common engine-related problems. The ZF 8-speed transmission can experience rough shifting, potentially leading to costly repairs. Electrical gremlins, particularly battery drain and iDrive malfunctions, are also worth noting. The severity of these issues varies, but the cost of repairs can be significant, making a pre-purchase inspection by a qualified mechanic highly recommended.