2018 Bentley Continental Supersports Convertible Maintenance Schedule & Service Intervals

The 2018 Bentley Continental Supersports Convertible represents the ultimate expression of Bentley's open-air grand touring philosophy. With production limited to just 710 units globally (shared with the coupé), this hand-built convertible is powered by an upgraded 6.0-liter twin-turbocharged W12 engine producing 700 horsepower and 750 lb-ft of torque . As a rare and high-performance motorcar, a rigorous maintenance regimen is essential for preserving its performance, reliability, and substantial investment value.

Key Takeaways

• Primary service interval: Bentley requires scheduled maintenance every 12 months or 10,000 miles (approximately 16,000 km), whichever comes first . This foundational requirement applies to the 2018 Continental Supersports Convertible.
• Engine & Performance: Powered by a 6.0L twin-turbo W12 producing 700 hp and 750 lb-ft of torque, paired with an 8-speed automatic transmission and all-wheel drive .
• Spark plugs: The W12 engine requires a full set of 12 spark plugs. The correct OEM spark plug part number for the 2018 Supersports is 07C905600 . For later V8 models, a different plug (0P2905601-A) is used .
• Transmission: The vehicle features an 8-speed automatic gearbox with Quickshift and steering-column-mounted gearshift paddles . A parts set for the 8-speed automatic gearbox (part number 0CU 300 035 QX) is available for this model .
• Brakes: Carbon-ceramic brakes with 420 mm front and 356 mm rear carbon silicon carbide discs are standard equipment .
• Service documentation: The official instruction manual for the Continental Supersports Convertible (2017+) carries part number 390 012 728 EC .
• Factory warranty: New 2018 models came with a 3-year basic, powertrain, and corrosion warranty, plus a 1-year/10,000-mile maintenance warranty .

Factory Recommended Service Schedule

Primary Service Interval

Bentley's official service guidelines are simple and consistent: 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 .

Service Schedule Progression

Based on established Bentley service patterns for the Continental range and specialist guidance, the service schedule follows a recurring progression of service types :

Annual / 10,000-Mile Service Contents

At each scheduled visit, the following baseline items are typically performed :

• Engine Oil & Filter: Replaced with Bentley-specification synthetic oil
• Tire Rotation: All four tires rotated for even wear
• Cabin Pollen Filter: Replaced
• Windshield Wipers: Replaced as needed
• Key Fob Battery: Replaced
• Brake System: Comprehensive inspection of brake pads and discs
• Fluid Levels: All vehicle systems checked and topped up
• Leakage Inspection: Visual inspection for fluid leaks
• Suspension: Comprehensive inspection of all components, including the lowered and stiffened dynamic suspension setup

Following the vehicle inspection, owners are informed of any components not meeting specification, at which point they can approve any necessary repairs .

Engine Oil Change Guidance

Oil Specifications and Capacities

The 6.0L twin-turbo W12 engine in the Supersports Convertible requires high-quality fully synthetic oil meeting Bentley's factory standards. Modern synthetic oils are engineered to last between 7,500 and 15,000 miles between oil changes . The Supersports Convertible's engine—producing 700 hp and 750 lb-ft of torque—benefits from regular oil changes to protect the turbochargers and internal components .

Oil Change Interval

• Factory recommendation: Every 12 months or 10,000 miles
• Conservative owner guidance: Never exceed 12 months for an oil change, even if the mileage is low, as synthetic oil can degrade over time. For vehicles driven primarily in extreme climates or for short urban journeys, many specialists recommend more frequent changes .

Oil Change Cost

An oil change on a Bentley Continental typically costs between $500 and $800 depending on the service centre . This reflects the use of premium synthetic oil and genuine Bentley filters.

Spark Plug Timing

Replacement Interval and Part Specifications

The 2018 Continental Supersports Convertible uses a full set of spark plugs. The 6.0L W12 engine requires 12 spark plugs.

For the 2018 Supersports, the correct genuine Bentley spark plug part number is 07C905600 . This spark plug is compatible with a wide range of 2010-2018 Bentley W12 models, including the Continental GT, GTC, and Flying Spur .

• Earlier Supersports models (2009-2011): Use spark plug part number 101905600B
• New Continental GT (2019-2024): Use spark plug part number 0P2905601

Genuine Bentley spark plugs are designed to meet the specific requirements of the W12 engine and are made from high-quality materials to ensure performance and reliability .

Symptoms of Fouled Spark Plugs

Fouled spark plugs can cause:

• Decreased fuel economy
• Increased emissions
• Engine misfires
• Rough idle
• Difficulty starting the car

Regular inspection and replacement at the recommended interval is essential for maintaining optimal ignition performance, fuel efficiency, and engine health.

Transmission Service

Transmission Specifications

The 2018 Continental Supersports Convertible is equipped with an 8-speed automatic transmission with Quickshift and steering-column-mounted gearshift paddles . The transmission is paired with the vehicle's all-wheel-drive system and rear-biased torque distribution for optimized handling and performance .

Service Interval

A parts set for the 8-speed automatic gearbox (part number 0CU 300 035 QX) is available for the Continental Supersports (2017+) and Continental Supersports Convertible (2017+) . Regular inspection of the gearbox and its components is recommended to prevent potential issues such as misalignment or vibration .

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.

Brake System

Carbon-Ceramic Brakes

The 2018 Continental Supersports Convertible features carbon-ceramic brakes with 420 mm front and 356 mm rear carbon silicon carbide discs as standard equipment . These high-performance braking components provide exceptional stopping power but require specialist attention.

Brake Fluid

The braking system uses DOT-4 brake fluid. Brake fluid should be checked at every service and replaced according to the manufacturer's schedule. A conservative approach is to flush and replace brake fluid every 2 years.

Brake Component Inspection

Brake pads and discs should be inspected at every service. Given the vehicle's power and weight, brake components may wear more quickly than on standard models. Regular inspection is essential to avoid costly damage to other braking components.

Long-Term Ownership Considerations

Service Documentation

Maintaining a comprehensive service history is critical for preserving the vehicle's resale value. The official instruction manual for the Continental Supersports Convertible (2017+) carries part number 390 012 728 EC and is an essential resource . A full Bentley service history from a recognised specialist carries significant weight in the market.

Specialist Care

Given the vehicle's complexity and limited production, service should be performed by certified Bentley technicians or independent specialists with the right equipment and genuine parts. Specialist service centres offer manufacturer-specific servicing to all Bentley models using the latest Bentley diagnostic software .

Driving Habits and Storage

The Supersports Convertible benefits from regular use. For vehicles not used regularly, a trickle charger is recommended to maintain the advanced electrical systems. The manufacturer's recommended service schedule is the best way to prevent significant issues and expensive repairs.

Tire Maintenance

With its power, all-wheel-drive configuration, and 205 mph top speed, proper tire pressure and condition are essential for safety and performance. Tire rotation is a standard part of the annual service.