2015 BMW 740i

Introduction to the 2015 BMW 740i

The 2015 BMW 740i is a luxury sedan powered by a 3.0-liter turbocharged inline-six engine that produces 320 horsepower and 330 lb-ft of torque. It comes standard with an eight-speed automatic transmission and rear-wheel drive, while all-wheel drive is available as an option. The 740i is known for its refined driving experience, spacious interior, and advanced technology features. However, it also has some known issues that owners should be aware of.

Engine

3.0L Turbocharged Inline-Six

• Intake Valve Carbon Buildup
  • Description/Symptoms: Over time, carbon deposits can build up on the intake valves, leading to reduced engine power, rough idling, and increased fuel consumption.
  • Solution: The intake valves need to be cleaned to remove the carbon deposits.
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found
• Turbocharger Failure
  • Description/Symptoms: The turbocharger may fail due to a variety of reasons, such as oil starvation, overheating, or a faulty wastegate. This can result in a loss of engine power, blue or black smoke from the exhaust, or a whistling noise.
  • Solution: The turbocharger needs to be replaced.
  • Estimated Cost to Fix: $2,000 - $4,000+
  • Recalls: None Found
• High-Pressure Fuel Pump Failure
  • Description/Symptoms: The high-pressure fuel pump may fail, causing the engine to stall or run roughly.
  • Solution: The high-pressure fuel pump needs to be replaced.
  • Estimated Cost to Fix: $1,000 - $2,000+
  • Recalls: None Found

Transmission

Eight-Speed Automatic

• Shifting Problems
  • Description/Symptoms: The transmission may experience shifting problems, such as delayed shifts, hard shifts, or slipping gears.
  • Solution: The transmission may need to be serviced or rebuilt.
  • Estimated Cost to Fix: $1,500 - $3,000+
  • Recalls: None Found

Suspension

• Strut Mount Failure
  • Description/Symptoms: The strut mounts may fail, causing the suspension to make a clunking or rattling noise, especially when going over bumps.
  • Solution: The strut mounts need to be replaced.
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found
• Air Suspension Compressor Failure
  • Description/Symptoms: The air suspension compressor may fail, causing the suspension to sag or become uneven.
  • Solution: The air suspension compressor needs to be replaced.
  • Estimated Cost to Fix: $1,000 - $2,000+
  • Recalls: None Found

Electrical

• Battery Drain
  • Description/Symptoms: The battery may drain prematurely, especially when the vehicle is not in use.
  • Solution: The source of the battery drain needs to be identified and fixed.
  • Estimated Cost to Fix: $200 - $500+
  • Recalls: None Found
• Electrical Module Failure
  • Description/Symptoms: Various electrical modules may fail, causing a variety of symptoms, such as malfunctioning lights, power windows, or audio system.
  • Solution: The faulty electrical module needs to be replaced.
  • Estimated Cost to Fix: $500 - $2,000+
  • Recalls: None Found

Exterior

• Roof Rail Trim Peeling
  • Description/Symptoms: The trim on the roof rails may peel or warp over time.
  • Solution: The trim may need to be replaced or refinished.
  • Estimated Cost to Fix: $200 - $500+
  • Recalls: None Found

Interior

• Center Console Creaking
  • Description/Symptoms: The center console may creak or rattle, especially when driving over rough roads.
  • Solution: The center console may need to be tightened or adjusted.
  • Estimated Cost to Fix: $100 - $500
  • Recalls: None Found
• Heated Seat Failure
  • Description/Symptoms: The heated seats may not work properly or may overheat.
  • Solution: The heated seat elements or control module may need to be replaced.
  • Estimated Cost to Fix: $500 - $1,000
  • Recalls: None Found

Summary

Overall, the 2015 BMW 740i is a well-respected luxury sedan, but it has some known issues that can be costly to repair. Some of the most common issues include carbon buildup on the intake valves, turbocharger failure, and shifting problems with the transmission. However, most of these issues can be fixed with relatively straightforward repairs. The severity and cost of these issues can vary depending on the specific problem and the extent of the damage.