2014 Bentley Mulsanne

The 2014 Bentley Mulsanne is a luxury sedan known for its handcrafted interior, powerful engine, and smooth ride. It features a 6.75-liter twin-turbocharged V8 engine producing 505 horsepower and 752 lb-ft of torque. A “Speed” version was also available, boosting output to 530 horsepower and 811 lb-ft of torque. This engine is paired exclusively with an 8-speed automatic transmission. Owners often praise the Mulsanne for its opulent interior, effortless power, and imposing presence. Common dislikes include its large size, which can make it challenging to maneuver in tight spaces, and its high running costs associated with maintenance and fuel consumption.

Engine

6.75L Twin-Turbocharged V8

• Oil Leaks
  • Description/Symptoms: Oil leaks can occur from various points on the engine, including valve cover gaskets, oil pan gasket, and turbocharger lines. Symptoms include visible oil drips under the car, a burning oil smell, and low oil levels.
  • Solution: Replacing the leaking gaskets or lines is the most common solution. For turbocharger line leaks, replacing the lines entirely might be necessary.
  • Estimated Cost to Fix: $200 - $2000+ depending on the location and severity of the leak.
  • Recalls: None Found
• Turbocharger Issues
  • Description/Symptoms: The turbochargers can experience failures, leading to reduced power, increased exhaust smoke, and potential engine damage. Faulty wastegate actuators or damaged turbine wheels are common causes.
  • Solution: Replacing or rebuilding the affected turbocharger.
  • Estimated Cost to Fix: $3000 - $7000+ depending on parts and labor.
  • Recalls: None Found

Transmission

8-Speed Automatic (ZF 8HP90)

• Harsh Shifting
  • Description/Symptoms: Some owners have reported harsh or jerky shifting, particularly between certain gears. This can be caused by worn valve body components or low transmission fluid.
  • Solution: A transmission fluid flush and filter replacement may resolve minor issues. For more severe cases, valve body replacement or transmission rebuild may be necessary.
  • Estimated Cost to Fix: $300 - $500 (fluid flush) to $3000 - $8000+ (rebuild or replacement).
  • Recalls: None Found
• Torque Converter Failure
  • Description/Symptoms: Torque converter failure can lead to shuddering during acceleration, stalling, and a general loss of power.
  • Solution: Replacing the torque converter. In some cases, the entire transmission might need to be rebuilt or replaced if debris from the failed torque converter has contaminated the transmission.
  • Estimated Cost to Fix: $2000 - $6000+
  • Recalls: None Found

Suspension

• Air Suspension Compressor Failure
  • Description/Symptoms: The air suspension system is prone to compressor failures. Symptoms include the car sitting unevenly, the suspension warning light illuminating, and the inability to adjust ride height.
  • Solution: Replacing the air suspension compressor.
  • Estimated Cost to Fix: $1500 - $3000+
  • Recalls: None Found
• Air Strut Leaks
  • Description/Symptoms: Air leaks in the struts can cause the vehicle to sag or sit unevenly. You may also hear a hissing sound coming from the struts.
  • Solution: Replacing the leaking air strut(s).
  • Estimated Cost to Fix: $1000 - $3000+ per strut.
  • Recalls: None Found

Electrical

• Battery Drain
  • Description/Symptoms: Excessive battery drain can lead to difficulty starting the car or a completely dead battery. This can be caused by a faulty module, a parasitic draw, or an aging battery.
  • Solution: Identifying and fixing the source of the parasitic draw or replacing the battery.
  • Estimated Cost to Fix: $100 - $500+ (battery replacement) to $500 - $2000+ (diagnosing and repairing parasitic drain).
  • Recalls: None Found
• Infotainment System Issues
  • Description/Symptoms: The infotainment system can experience glitches, freezes, and unresponsive touchscreens.
  • Solution: Software updates may resolve some issues. In more severe cases, the infotainment system module may need to be replaced.
  • Estimated Cost to Fix: $100 - $500 (software update) to $2000 - $5000+ (module replacement).
  • Recalls: None Found

Exterior

• Sensor Failures
  • Description/Symptoms: Sensors, such as parking sensors and blind-spot monitoring sensors, can fail, leading to inaccurate readings or complete system inoperability.
  • Solution: Replacing the faulty sensor(s).
  • Estimated Cost to Fix: $200 - $1000+ per sensor depending on the sensor type and location.
  • Recalls: None Found

Interior

• Electrical Component Failure
  • Description/Symptoms: There may be issues with power windows, locks, or seat controls failing.
  • Solution: Replacing the faulty motor or switch.
  • Estimated Cost to Fix: $200-$1000+
  • Recalls: None Found

Summary

The 2014 Bentley Mulsanne, while offering a luxurious and powerful driving experience, can present owners with a range of potential issues. Engine oil leaks and turbocharger problems can lead to significant repair bills. Suspension and electrical issues are fairly common and can affect the vehicle’s reliability. The severity of these issues ranges from minor annoyances to major mechanical failures. The estimated cost to fix these issues varies widely, but some repairs can be quite expensive, reflecting the car’s high-end status. Potential buyers should be aware of these potential problems and factor them into their ownership considerations. A thorough inspection and service history review are highly recommended before purchasing a used 2014 Bentley Mulsanne.