2003 maintenance schedule
2003 Bentley Continental T Maintenance Schedule & Service Intervals
The 2003 Bentley Continental T represents the final year of the classic, hand-built Continental lineage before the Volkswagen-era Continental GT.
Last updated
July 13, 2026
Reviewed for service schedule clarity.
The 2003 Bentley Continental T represents the final year of the classic, hand-built Continental lineage before the Volkswagen-era Continental GT. As a rare, high-performance grand tourer powered by a turbocharged 6.75L V8, it is a motorcar of significant mechanical complexity and collectible value. This guide compiles the recommended service schedule and key maintenance considerations for the 2003 Continental T.
Key Takeaways
- Primary Service Interval: Most third-party references recommend servicing the Continental T every 12 months or 10,000 miles, whichever comes first. An Interim service at 5,000 miles/6 months is also recommended for vehicles in active use .
- Engine: Powered by a turbocharged 6.75L V8. The engine is known to be sensitive to oil quality, and regular oil changes with the correct specification are essential for long-term reliability.
- Transmission Fluid: The automatic transmission has a fluid capacity of 4.25 liters . A Dexron II or Dexron III specification fluid is suitable .
- Spark Plugs: The 2003 Continental T uses a full set of 8 spark plugs. The correct OEM spark plug part number is 07V905600-X . Aftermarket options are also available .
- Service Indicator: The vehicle is equipped with a standard service interval warning system on the instrument cluster .
- Warranty: Original 2003 models came with a 36-month/100,000-mile warranty .
Recommended Service Schedule
Primary Service Interval
For the 2003 Bentley Continental T, most specialist service providers recommend a schedule of every 12 months or around 10,000 miles, whichever occurs first . Given the vehicle's age and the high-performance nature of the 6.75L V8, the more conservative 6-month/5,000-mile interval is strongly advisable for vehicles in active use.
A complete and consistent service history is critical for preserving the value and condition of a vehicle like the Continental T. The official owner's manual for the 2003-2010 Continental GT (part number 3W8 012 003 KC, 3W8 012 003 CN, or 3W8 012 003 LT) provides the definitive maintenance schedule for vehicles of this era and should be consulted for model-specific guidance .
Service Structure Progression
Specialist garages typically offer two main levels of service for the Continental T, designed to provide a comprehensive check of all vital systems :
| Service Level | Interval | Key Operations |
|---|---|---|
| Interim Service | 5,000 miles / 6 months | Oil and filter change with high-quality synthetic oil; top up fluid levels; check brakes, steering, suspension, tyres, and pollen filter . |
| Full Service | 10,000 miles / 12 months | All Interim items; comprehensive brake inspection with wheel removal; brake fluid condition check; full inspection of steering, suspension, and tyres; spark plug replacement (at extra cost) . |
Full Service Contents
At a comprehensive service visit, the following baseline items should be inspected and/or replaced as needed:
- Engine Oil & Filter: Replaced with high-quality synthetic oil meeting Bentley specifications.
- Brake System: Comprehensive inspection of brake pads, discs, and fluid. With the vehicle's substantial weight, brake components may wear more quickly than on lighter vehicles.
- Steering and Suspension: Full inspection of all components, including the self-levelling hydraulic system. This is a complex and expensive system to maintain.
- Fluid Levels: All vehicle systems (coolant, brake fluid, power steering fluid) checked and topped up.
- Tyres: Condition and pressure check.
- Spark Plugs: Replaced during the Full Service .
Key Fluid and Component Specifications
Engine Oil
The 6.75L V8 requires high-quality synthetic oil. The exact specification is detailed in the owner's manual. The oil change interval is typically every 10,000 miles or 12 months.
Transmission Fluid
| Specification | Detail |
|---|---|
| Fluid Capacity | 4.25 liters |
| Fluid Type | Dexron II or Dexron III |
Rear Differential
| Specification | Detail |
|---|---|
| Fluid Capacity | 2.8 liters |
| Fluid Type | 75W-90 or similar, meeting GL-5 specification |
Spark Plugs
| Specification | Detail |
|---|---|
| Quantity | 8 |
| OEM Part Number | 07V905600-X |
| Thread Diameter | 14 mm |
| Thread Pitch | 1.25 mm |
| Reach | 19 mm (3/4") |
| Seat Type | Gasket |
Long-Term Ownership Considerations
Service Documentation
Maintaining a comprehensive service history is critical for preserving the vehicle's value. A well-documented history from a recognised specialist is a critical factor in verifying the car's condition and preserving its significant value. The official workshop manual for the 1992-2003 Continental R/T provides the definitive service and repair information for qualified technicians.
Specialist Care
The 2003 Continental T is a hand-built, complex vehicle requiring specialist knowledge and genuine parts to be maintained correctly. Service should be performed by a certified Bentley technician or an independent specialist with the right equipment and deep knowledge of classic Bentleys.
Tyre Maintenance
Goodyear recommends that any tyre in service 6 years or more be replaced even if it has not reached the legal treadwear limit. Tyre rotation and rebalancing are typically recommended every 5,000 miles (8,000 km).
Maintenance questions
2003 Bentley Continental T FAQs
How often does a 2003 Bentley Continental T need servicing?+
Most specialist providers recommend a service every 12 months or around 10,000 miles, whichever comes first . A more frequent 6-month/5,000-mile interval is advisable for vehicles in active use.
What type of transmission fluid does the Continental T use?+
The automatic transmission uses a fluid meeting Dexron II or Dexron III specifications, with a capacity of 4.25 liters .
How many spark plugs does the 2003 Continental T have?+
The 6.75L V8 engine uses a full set of 8 spark plugs .
What spark plugs does the 2003 Continental T use?+
The correct OEM spark plug part number is 07V905600-X . A suitable aftermarket option is the NGK HX Ruthenium spark plug with a 14mm thread, 1.25mm pitch, 19mm reach, and a gap of .043" (1.1 mm) .
What was the original warranty on a 2003 Bentley Continental T?+
The 2003 Continental T came with a 36-month/100,000-mile warranty covering basic, powertrain, and corrosion .
Where can I find the official maintenance schedule?+
The official owner's manual for the 2003-2010 Continental GT is available under part numbers 3W8 012 003 KC, 3W8 012 003 CN, or 3W8 012 003 LT and provides the definitive maintenance information for vehicles of this era .