2016 BMW 428i Gran Coupe

The 2016 BMW 428i Gran Coupe is a stylish four-door coupe that offers a blend of sporty handling and everyday practicality. The base engine for this model is a 2.0-liter turbocharged four-cylinder (B48) producing 240 horsepower and 255 lb-ft of torque. Other available engines for the 4 Series Gran Coupe included the 435i with a 3.0-liter turbocharged inline-six. Both engines were offered with either an 8-speed automatic or a 6-speed manual transmission, although the 428i was more commonly equipped with the automatic. Owners generally praise the 428i Gran Coupe for its sleek design, agile handling, and comfortable interior. However, some common complaints include reliability issues, particularly with the cooling system and certain electrical components, as well as the relatively firm ride.

Engine

2.0L Turbocharged Inline-4 (B48)

• Oil Leaks from Valve Cover Gasket
  • Description/Symptoms: Oil leaking onto the exhaust manifold causing a burning smell, visible oil around the valve cover.
  • Solution: Replacement of the valve cover gasket.
  • Estimated Cost to Fix: $300 - $500
  • Recalls: None Found
• Coolant Leaks
  • Description/Symptoms: Low coolant warning light, visible coolant leak under the vehicle, overheating. The coolant leaks are often around the plastic coolant fittings and hoses.
  • Solution: Replacement of leaking coolant hoses, expansion tank, or other cooling system components.
  • Estimated Cost to Fix: $150 - $800+ depending on the component.
  • Recalls: None Found

Transmission

8-Speed Automatic (ZF 8HP)

• Rough Shifting/Hesitation
  • Description/Symptoms: Jerky or delayed shifts, particularly during acceleration or deceleration. Sometimes accompanied by unusual noises.
  • Solution: Software re-programming of the transmission control module (TCM), fluid change, or in some cases, valve body replacement.
  • Estimated Cost to Fix: $200 (software) to $1500+ (valve body)
  • Recalls: None Found

Suspension

• No Issues Found

Electrical

• Faulty Door Lock Actuators
  • Description/Symptoms: Doors not locking or unlocking properly with the key fob or interior switch.
  • Solution: Replacement of the faulty door lock actuator(s).
  • Estimated Cost to Fix: $250 - $450 per door
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: Car battery dying prematurely, especially after short periods of inactivity. Can be caused by a parasitic drain from a faulty module.
  • Solution: Diagnostic testing to identify the source of the parasitic draw and repair or replace the affected component.
  • Estimated Cost to Fix: $150+ (diagnostic) and varies depending on the repair.
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• iDrive Controller Malfunctions
  • Description/Symptoms: The iDrive controller becoming unresponsive, skipping selections, or malfunctioning intermittently.
  • Solution: Replacement of the iDrive controller.
  • Estimated Cost to Fix: $400 - $700
  • Recalls: None Found

Summary

The 2016 BMW 428i Gran Coupe, while offering an appealing combination of style and performance, presents some common issues that potential buyers should be aware of. Engine issues such as oil and coolant leaks, as well as electrical problems like faulty door lock actuators and battery drain are the most frequent. The 8-speed automatic transmission can also exhibit rough shifting issues. The severity of these problems can range from minor inconveniences to more costly repairs. Potential owners should factor in these potential repair costs and thoroughly inspect the vehicle before purchasing.