2014 Bentley Mulsanne Complete Maintenance Schedule & Service Guide

The 2014 Bentley Mulsanne is the ultimate expression of British luxury saloon engineering. Powered by a hand-built 6.75L twin-turbo V8, this flagship motorcar represents the pinnacle of Crewe craftsmanship. A disciplined and well-documented maintenance schedule is the cornerstone of preserving its performance, reliability, and substantial investment value.

Key Takeaways

• Primary Service Interval: Scheduled maintenance is required every 12 months or 16,000 km (approximately 10,000 miles), whichever comes first .
• Engine & Drivetrain: Powered by a 6.75L twin-turbo V8 (SOHC) producing 505 hp and 752 lb-ft of torque, paired with an 8-speed automatic transmission and rear-wheel drive .
• Factory Warranty: New 2014 models were protected by a comprehensive 3-year/unlimited mileage factory warranty .
• Service Indicator: The vehicle is equipped with a standard service interval warning system on the instrument cluster.
• Service Documentation: The official owner's manual (part number 4W0 012 006 BL) is the definitive source for maintenance requirements .
• First Year Complimentary: The first year of Bentley service is complimentary for the original owner .

Factory Recommended Service Schedule

Primary Service Interval

Bentley's official service guidelines are straightforward: the 2014 Mulsanne requires a service once a year, or every 10,000 miles (approximately 16,000 km), whichever comes first . The first year of Bentley service is complimentary for the original owner .

Annual / 16,000 km Service Contents

At each scheduled visit, a comprehensive inspection and service is performed. This typically includes :

• Engine Oil & Filter: Replaced with Bentley-specification fully synthetic oil .
• Cabin Pollen Filter: Replaced .
• Windshield Wipers: Replaced as needed .
• Key Fob Battery: Replaced .
• Brake System: Comprehensive inspection of brake pads, discs, fluid levels, and hoses .
• Fluid Levels: All vehicle systems (coolant, brake fluid, power steering, transmission) checked and topped up .
• Leakage Inspection: Visual inspection for fluid leaks from the engine and transmission .
• Suspension: Comprehensive inspection of all steering and suspension components, including air springs, for wear and damage .
• Air Filter: The engine air filter is inspected at every service and replaced as needed .
• Lighting & Wipers: Operational check of all external lights, horn, and wipers .
• Tire Inspection: Condition, tread, and pressure check .

Following the vehicle check, owners are informed of any components that are not up to specification, at which time they can approve any necessary repairs .

Service Structure Progression

Bentley service schedules follow a recurring pattern of service types that increase in scope as the vehicle accumulates mileage. While the primary factory-scheduled service remains the annual 10,000-mile inspection, the schedule may progress in complexity at higher intervals, typically following an Interim, Full, and Major service structure. The 8-speed automatic transmission fluid and filter service, for instance, should be considered at higher mileages or based on transmission behavior .

Engine Oil and Filter Change

Oil Specifications

The 6.75L twin-turbo V8 in the Mulsanne requires high-quality fully synthetic oil meeting Bentley's stringent factory standards. The engine has a basic oil capacity of 9.4 liters. Specialist services typically include replacing the engine oil and filter . Traditional motor oils require more frequent replacement, while modern synthetic oils can last 7,500 to 15,000 miles .

Oil Change Interval

The factory recommendation is to change the engine oil and filter every 12 months or 16,000 km (10,000 miles) . Even if the mileage is low, an annual oil change is recommended because engine oil degrades over time . The service interval warning system on the instrument cluster will alert the driver when maintenance is approaching .

Brake System

The 2014 Mulsanne's braking system requires regular inspection and maintenance to ensure safety and performance.

Brake Fluid

Brake fluid is hygroscopic and absorbs moisture over time, which can degrade braking performance. A conservative and recommended approach is to flush and replace the brake fluid every 2 years (24 months), regardless of mileage. The brake fluid is checked for strength and level at each service .

Brake Components

At each service, brake pads, discs, and calipers are inspected for wear, leaks, and security . With the vehicle's substantial weight, brake components may wear more quickly than on lighter vehicles. Regular inspection is essential to avoid costly secondary damage.

Air Filter

Engine Air Filter

The engine air filter protects the 6.75L V8 and its twin-turbo system from dust and debris, preserving horsepower and fuel economy . It is inspected at every service and, under normal conditions, replaced as needed. Driving in severe or dusty conditions may require more frequent changes .

Cabin Air Filter

The cabin air filter, which removes pollen and pollutants from the interior's HVAC airflow, is typically replaced during a major service .

Fuel Filter

Changing the fuel filter is part of the repair and maintenance schedule for the Mulsanne. Many car companies recommend changing the fuel filter every 5 years or 50,000 miles, though this may vary based on driving habits and local fuel quality . The owner's manual provides the most specific information for your vehicle .

Transmission and Fluids

Transmission Service

The 2014 Mulsanne is equipped with a sophisticated 8-speed automatic transmission . Specialist service centres typically check the transmission for fluid leaks as part of a standard service .

The question of whether a transmission fluid change is required depends on the specific application and the guidelines in the owner's manual . Some modern transmissions are designed to never need a fluid change unless there is a leak or other problem . It is crucial to follow the specific guidelines outlined in the Bentley Owner's Manual for the definitive service interval .

Warning Signs

If shifting becomes rough, delayed, or is accompanied by unusual noises or lurching, have the transmission inspected immediately by a Bentley service center .

Timing Belt/Chain

Many modern engines use a timing chain that can outlast the engine, while others use a rubber timing belt that may need replacing between 60,000 and 100,000 miles . The 2014 Mulsanne uses a timing chain, which is a durable and long-life component. Consult the owner's manual for the specific recommendation for your vehicle.

Tire Maintenance

Proper tire maintenance is essential for the Mulsanne's performance and safety. Tire rotation and rebalancing are recommended periodically as part of routine service . Tire pressure should be checked regularly, with front tires at approximately 43 psi and rear tires at 48-49 psi .

Long-Term Ownership Considerations

Service Documentation

Maintaining a comprehensive service history is critical for preserving the vehicle's resale value. The official operating instructions manual for the 2014 Mulsanne (part number 4W0 012 006 BL) is an essential resource for understanding the vehicle's features, controls, and maintenance procedures . Service records should document all work performed, including the use of Bentley-specification parts and fluids. A full Bentley service history from a recognised specialist carries significant weight in the market.

Specialist Care

Given the vehicle's complexity, service should be performed by certified Bentley technicians or independent specialists with the right equipment and access to genuine parts. Independent service centres that follow the manufacturer's schedule and use OEM parts can perform servicing that maintains the vehicle's warranty and value .

Extended Warranty

Original owners could extend the factory warranty by two additional years. This extension is transferable to a private buyer and features unlimited mileage and claims value .

Cost Awareness

Owning a Bentley Mulsanne comes with significant maintenance costs. Routine services can easily run into thousands of pounds, and even minor repairs can become quite expensive. It is essential for owners to budget adequately for these expenses.