2007 Bentley Arnage LWB Service Requirements & Maintenance Schedule

Key Takeaways

• Factory maintenance interval: Annual service or every 10,000 miles (approximately 16,000 km), whichever comes first
• Factory warranty: 3 years/unlimited mileage coverage from new, with the first year of scheduled maintenance complimentary
• Engine: 6.8L twin-turbo V8 (SOHC), rear-wheel drive; 6-speed automatic transmission with overdrive
• Service interval warning system: Standard equipment to track upcoming service requirements
• Service schedule progression: Annual service progresses through service types as documented across similar Arnage models
• Drivetrain-specific note: All Arnage models, including LWB, are rear-wheel drive with a 2.69 axle ratio

Introduction

The 2007 Bentley Arnage LWB (Long Wheelbase) represents the ultimate expression of Bentley's flagship sedan, offering extended rear passenger space and the legendary 6.8L twin-turbo V8. As the final model year of the Arnage line before the introduction of the Bentley Mulsanne, the 2007 model benefits from years of refinement to the 6.75L V8 architecture.

As a hand-built luxury motorcar of exceptional complexity, proper maintenance is essential for preserving performance, reliability, and value. The LWB variant shares its service schedule with other 2007 Arnage models, and all guidance reflects the rear-wheel-drive configuration .

Factory Recommended Service Schedule

Service Interval

The 2007 Bentley Arnage follows a structured service schedule based on mileage or time, whichever comes first. The primary interval is annual service or every 10,000 miles (approximately 16,000 km) . Some documentation also indicates a 6-month service check, likely for high-mileage or fleet vehicles .

Annual / 10,000-Mile Service

Each scheduled visit includes the following baseline items :

Service Schedule Progression

Based on established Arnage service patterns, the schedule progresses as follows :

After reaching 100,000 miles, the service schedule repeats .

Warranty Coverage

Every new 2007 Bentley Arnage came with a 3-year/unlimited mileage factory warranty . The first year of Bentley service was complimentary for original owners . Following the vehicle inspection, owners are informed of any components not meeting specification, at which time they can approve any necessary repairs .

Original owners could extend the factory warranty by an additional two years. This extension is transferable to private buyers and features unlimited mileage, unlimited claims value, and Bentley roadside assistance .

Engine Oil Change Guidance

The 2007 Arnage LWB is equipped with the 6.8L (6.75-liter) twin-turbo V8 engine .

Oil Capacity and Specifications

The 6.8L V8 requires high-quality synthetic oil meeting Bentley specifications. The engine has a substantial oil capacity of approximately 9.4 liters with a filter change. Always verify the exact viscosity required for your specific engine variant and ensure the oil meets Bentley/VW approvals.

Recommended Oil Change Interval

• Factory recommendation: Annual or every 10,000 miles (Service Type A)
• Conservative owner guidance: Given the vehicle's age, many specialists suggest more frequent changes—6,000 to 8,000 miles—particularly if the car is driven infrequently or in stop-start conditions

Oil Quality Notes

Regular oil changes are particularly important for the 6.75L V8. Using incorrect oil can lead to premature engine wear and reduced performance. The engine is known to be sensitive to oil quality, and proper lubrication is essential for the twin-turbo system's longevity.

Transmission Service Guidance

The 2007 Bentley Arnage LWB is a rear-wheel-drive vehicle equipped with a 6-speed automatic transmission with overdrive . The transmission features sequential shift control and has a 2.69 axle ratio .

Transmission Service

Transmission oil is replaced as part of the annual service schedule. The transmission oil intake strainer is typically replaced at 30,000-mile intervals. Given the vehicle's age, a full transmission service by a qualified specialist is recommended if not recently documented.

Warning Signs

If shifting becomes rough, delayed, or accompanied by unusual noises or lurching, have the transmission inspected immediately.

Spark Plug Timing

Spark plugs are typically replaced at 30,000-mile intervals as part of the scheduled service.

Technical Specifications

The 6.8L V8 is a SOHC (Single Overhead Cam) design with a coil-on-plug ignition system. Proper spark plug specification and gap are critical for engine performance and fuel efficiency.

Coolant Service Timing

Service Schedule

Coolant is typically replaced at 30,000-mile intervals or every 3 years.

Coolant Type

The Arnage uses a glycol-based antifreeze/coolant, typically a 50/50 mix of antifreeze and distilled water.

Owner Guidance

Given the age of the 2007 Arnage, any coolant that has been in service beyond 4–5 years should be replaced proactively. Proper cooling system maintenance is essential for the 6.75L V8's longevity.

Brake Fluid Recommendations

Brake fluid is a critical safety component that degrades over time by absorbing moisture from the atmosphere.

Service Schedule

Brake fluid is inspected during every annual service. The Arnage features 4-wheel disc brakes with ABS and brake assist .

Conservative Owner Guidance

• Flush interval: Every 2 years regardless of mileage
• Check intervals: At each annual / 10,000-mile service

The Arnage's braking system is substantial, designed to handle the vehicle's significant weight. Brake pad and disc wear should be monitored closely.

Additional Maintenance Considerations

Known Technical Service Bulletins

Documented service bulletins for the 2007 Arnage include :

• Final drive: Unhardened bevel gears (Bulletin 07-01-28-01)
• Fuel system: Fuel cooler bypass solenoid failure (Code P0191) (Bulletin 07013101)
• Engine running complaints: Poor engine running/misfires on petrol engines (Bulletin 2051187.1)
• Brake system: Brake noise identification (Bulletin 2052785.3)
• Battery condition: 12V battery condition checks (Bulletin 2051562.4)
• Air springs: Air spring fault finding (Bulletin 2032174)

These technical bulletins highlight areas requiring particular attention during routine service.

Suspension and Steering

The 2007 Arnage LWB features an adaptive suspension with automatic 4-corner level control . The suspension uses gas-pressurized shocks and coil springs with a double-wishbone design both front and rear . The front suspension is tuned for comfort with speed-sensitive steering .

Service Indicator

The 2007 Arnage includes a service interval warning system in the instrument cluster . This system displays when the next scheduled service is due.

Battery Maintenance

The Arnage uses twin batteries. These should be inspected during every service. The vehicle should be kept on a trickle charger if not used weekly to maintain battery health and prevent electrical system issues.

High-Mileage Maintenance Planning

For 2007 Arnage LWB examples approaching or exceeding 75,000 miles:

1. Major service: Ensure comprehensive service documentation is maintained
2. Coolant flush: Complete system flush with fresh coolant
3. Brake fluid flush: Full hydraulic system flush
4. Transmission service: Full fluid and filter service by a specialist
5. Spark plugs: Replace if not done within the last 30,000 miles
6. Suspension inspection: Check air springs, shocks, and bushings
7. Brake components: Inspect discs and pads thoroughly

Long-Term Ownership Considerations

The 2007 Bentley Arnage LWB rewards diligent maintenance. As a low-production, hand-built motorcar:

• Cooling system: The 6.75L V8 requires careful cooling system maintenance. Regular coolant changes and proper bleeding procedures are essential
• Oil changes: Regular oil changes with the correct viscosity and approval are essential for engine longevity
• Specialist care: Given the vehicle's complexity, using qualified specialists familiar with the Arnage is strongly recommended
• Documentation: Maintain a comprehensive service history to help preserve resale value