The Bentley Mulsanne, representing the pinnacle of British automotive luxury, blends opulent design, handcrafted interiors, and a commanding 6.75-liter V8 engine. Despite its exclusivity and prestige, the Mulsanne is not immune to the quirks and challenges of ultra-luxury ownership. In this in-depth guide, we’ll explore the common problems associated with the 2016-present Bentley Mulsanne, offer tips for buying one, and examine the costs of keeping this majestic sedan in peak condition.
1. Common Problems with the Bentley Mulsanne (2016-Present)
Engine and Performance Concerns
The Mulsanne is powered by Bentley’s iconic 6.75-liter twin-turbocharged V8 engine, producing up to 530 horsepower in the Speed variant. While this engine is a workhorse of luxury motoring, it has its vulnerabilities:
- Oil Leaks: One of the most reported issues is oil seepage around the valve covers or turbochargers, particularly in higher-mileage models. This is due to aging seals that may not withstand the extreme temperatures of the turbocharged engine.
- Turbocharger Wear: The twin-turbo setup can develop issues over time, such as loss of boost or whining noises, often caused by failing seals or bearings.
- Cooling System Problems: The Mulsanne's high-performance engine relies heavily on an efficient cooling system, and failures in water pumps, radiators, or coolant hoses can lead to overheating.
Transmission Issues
The 8-speed ZF automatic transmission in the Mulsanne is smooth and refined but prone to occasional hiccups:
- Harsh Shifting: Drivers have reported rough gear changes, especially when the transmission is cold. This may require software recalibration or fluid replacement.
- Fluid Leaks: Transmission fluid leaks, though uncommon, can occur around seals and gaskets, leading to performance issues if not addressed promptly.
- Torque Converter Failures: Rarely, the torque converter can develop problems, causing vibration or slippage during acceleration.
Suspension and Chassis Problems
The Mulsanne is designed for supreme comfort, equipped with an advanced air suspension system. However, over time, this system can present issues:
- Air Suspension Failures: Owners frequently report sagging or uneven ride height due to failing air springs or compressors. These parts can be expensive to replace.
- Control Arm Wear: The weight of the Mulsanne can put strain on suspension bushings and control arms, leading to clunking noises or alignment issues.
- Tire Wear: Due to the car’s size and weight, uneven tire wear is a common issue, particularly if the suspension is not properly aligned.
Electrical System Glitches
As a modern luxury car, the Mulsanne is packed with advanced electronics, but these systems can sometimes malfunction:
- Infotainment System Bugs: The Mulsanne’s infotainment system is often criticized for being outdated and prone to glitches, including frozen screens, slow response times, and failure to connect with devices via Bluetooth.
- Lighting Problems: LED lights, particularly the intricate daytime running lights, can fail prematurely, requiring costly replacements.
- Battery Drain: The Mulsanne is prone to parasitic battery drains, often linked to the sophisticated electronics, including the alarm system or keyless entry module.
Interior and Build Quality Issues
While the Mulsanne epitomizes luxury craftsmanship, some components show signs of wear faster than expected:
- Leather Aging: The hand-stitched leather seats and trims can develop creases, fading, or cracking if not regularly conditioned.
- Wood Veneer Splitting: The exquisite wood veneers, although beautifully crafted, are susceptible to splitting or cracking in extreme temperatures.
- Sunroof Problems: On models equipped with a sunroof, owners have reported leaks or failure of the mechanism.
Brake System Concerns
The Mulsanne’s powerful braking system, essential for controlling its substantial weight, can develop issues over time:
- Premature Wear: Brake pads and rotors tend to wear out quickly due to the vehicle’s weight, especially under spirited driving conditions.
- Squeaking Noises: Even with proper maintenance, the brakes can produce squealing sounds, often due to glazing or uneven pad wear.
2. What to Look for When Buying a Bentley Mulsanne (2016-Present)
Service Records and Maintenance History
- Ensure the car has a complete service history, ideally performed at authorized Bentley dealerships or reputable specialists. Look for evidence of regular oil changes, brake service, and air suspension inspections.
- Check for recalls and verify that any applicable service campaigns have been completed.
Inspect the Air Suspension
- During the test drive, note the ride quality and ensure the vehicle sits level. Any sagging or stiffness may indicate suspension problems.
Listen for Unusual Noises
- Pay attention to engine sounds, especially under acceleration, to detect potential turbocharger or exhaust issues.
- Listen for clunking or creaking noises from the suspension.
Electronics and Features
- Test all electronic systems, including the infotainment, climate control, and keyless entry. Ensure that all features function as expected.
- Verify that there are no warning lights on the dashboard, as these could signal expensive underlying issues.
Body and Interior Condition
- Examine the paintwork for chips or scratches, particularly on the hood and front bumper.
- Inspect the interior materials for signs of wear, such as cracked leather or faded wood veneers.
3. How Expensive Is It to Own a Bentley Mulsanne?
Owning a Bentley Mulsanne is a testament to sophistication, but the cost of maintaining this luxury icon reflects its exclusivity:
Maintenance Costs
- Oil Changes: $400-$800, depending on the service provider.
- Brake Replacements: $2,000-$5,000 for pads and rotors, with costs rising for high-performance aftermarket components.
- Suspension Repairs: Replacing an air spring or compressor can cost $2,000-$5,000. A full overhaul may exceed $10,000.
- Transmission Service: $1,000-$3,000 for fluid changes or minor repairs; significant repairs can surpass $10,000.
Insurance and Fuel Costs
- Insurance: Annual premiums range from $2,500 to $6,000, depending on the driver’s history and location.
- Fuel: The Mulsanne averages 12-14 mpg in the city and 18-20 mpg on the highway, requiring premium fuel. Fuel costs can be substantial for frequent drivers.
Depreciation
- While the Mulsanne holds its value better than many luxury sedans, it still depreciates significantly. Expect a 50-60% loss in value after five years.
4. Final Thoughts
The Bentley Mulsanne (2016-present) embodies a blend of old-world luxury and modern engineering. While its commanding presence and unmatched craftsmanship are undeniable, prospective buyers should be aware of the common issues that come with such an intricate machine. Regular maintenance, diligent inspections, and specialist care are crucial to keeping the Mulsanne in top condition.
For those who value refinement, exclusivity, and the allure of British motoring, the Mulsanne remains an unmatched choice. With the right preparation and a keen eye, this modern classic can be a rewarding ownership experience for years to come.