The 2004 BMW 6 Series, specifically the 645Ci, marked the return of the iconic coupe after a decade-long hiatus. This grand tourer, available as a coupe or convertible, blended sporty performance with luxurious appointments. Production years for this generation (E63/E64) span from 2004 to 2010. The primary trim was the 645Ci (later 650i). Original MSRP ranged from around $70,000. Its distinctive, often polarizing, design and powerful V8 engine made it stand out.
The Good
The 2004 BMW 6 Series offered strong performance from its V8 engine and a comfortable ride. It's design, while controversial, is undeniably distinctive. Emotionally, it provides a sporty and luxurious driving experience. Practically, it offers a spacious cabin for a coupe/convertible, decent trunk space, and BMW's reputation (at the time) for engineering.
The Bad
The 2004 BMW 6 Series is known for potential electrical issues, including problems with the iDrive system and sensor malfunctions. The early N62 V8 engine could suffer from valve stem seal problems, leading to oil consumption. Suspension components and the automatic transmission should also be inspected carefully. The complex electronics can be expensive to repair.
2004 BMW 6 Series: Quick Overview
- Engine Options: 4.4L N62 V8 (645Ci)
- Horsepower: 325 hp @ 6,100 rpm
- Torque: 330 lb-ft @ 3,600 rpm
- Fuel Economy:
- City: 15-17 mpg
- Highway: 22-25 mpg
- 0-60 Times: Approximately 5.9 seconds (automatic), slightly faster with manual
- Towing Capacity: Not Recommended
- Trim-Level Features (645Ci):
- Standard: Leather upholstery, power-adjustable front seats, automatic climate control, iDrive system, premium sound system, xenon headlights, sunroof (coupe), power convertible top (convertible).
- Optional: Navigation system, adaptive headlights, upgraded sound system (Logic7), sport package (sport seats, sport suspension), parking sensors, heated seats, active cruise control.
2004 BMW 6 Series Specifications
Vehicle Information
| Year | 2004 |
| Make | BMW |
| Model | 6-Series |
| Trim | - |
| Style | Coupe Rear-Wheel Drive |
| Type | Coupe |
| Category | Subcompact Car |
Manufacturing Details
| Made In | Germany |
| Manufacturing City | DINGOLFING |
Dimensions
| Doors | 2-Door |
| Curb Weight | 1900.1 kg |
| Gross Vehicle Weight Rating | 2095.14 kg |
| Overall Height | 137.41 cm |
| Overall Length | 483.11 cm |
| Overall Width | 185.42 cm |
| Wheelbase Length | 277.88 cm |
| Standard Seating | 4 |
Engine & Performance
| Engine | 4.4-L |
| Engine Size | 4.4L |
| Engine Cylinders | 8 |
| Transmission | 6-Speed Manual |
| Transmission Type | Manual |
| Transmission Speeds | 6-Speed |
| Drivetrain | Rear-Wheel Drive |
Additional Features
| Anti-Brake System | 4-Wheel ABS |
| Steering Type | Rack & Pinion |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | $76,300 USD |
| Invoice Price | $69,595 USD |
| Delivery Charges | $695 USD |
Vehicle History Report
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Analysis
Analysis
What Problems Does the 2004 BMW 6 Series Have?
The 2004 BMW 6 Series, particularly the 645Ci, has several frequently reported problems that prospective buyers should be aware of.
Engine Issues: The N62 V8 engine is known for potential oil leaks, particularly from valve stem seals. This can lead to increased oil consumption and, if left unaddressed, can cause engine damage. Coolant leaks from the valley pan are also common.
Electrical Problems: The iDrive system, while advanced for its time, is prone to glitches and failures. Sensor malfunctions, affecting systems like the parking sensors and tire pressure monitoring system, are also frequently reported. The complex wiring harness can also develop issues over time.
Transmission Problems: The automatic transmission can experience issues such as slipping or harsh shifting, especially as mileage increases. Regular fluid changes are crucial, but even with proper maintenance, problems can arise.
Suspension Issues: The suspension components, including control arms and bushings, are subject to wear and tear, leading to diminished handling and ride quality.
Recalls: It's crucial to check for any outstanding recalls related to the 2004 BMW 6 Series. Recalls have addressed issues such as fuel leaks and airbag malfunctions. Check the NHTSA website with the VIN for the specific vehicle to verify if all recall work has been performed.
Long-term reliability can be a concern due to the complexity of the vehicle and the age of the components. Preventative maintenance and addressing issues promptly are essential to maintaining the vehicle's reliability.
Engine Issues: The N62 V8 engine is known for potential oil leaks, particularly from valve stem seals. This can lead to increased oil consumption and, if left unaddressed, can cause engine damage. Coolant leaks from the valley pan are also common.
Electrical Problems: The iDrive system, while advanced for its time, is prone to glitches and failures. Sensor malfunctions, affecting systems like the parking sensors and tire pressure monitoring system, are also frequently reported. The complex wiring harness can also develop issues over time.
Transmission Problems: The automatic transmission can experience issues such as slipping or harsh shifting, especially as mileage increases. Regular fluid changes are crucial, but even with proper maintenance, problems can arise.
Suspension Issues: The suspension components, including control arms and bushings, are subject to wear and tear, leading to diminished handling and ride quality.
Recalls: It's crucial to check for any outstanding recalls related to the 2004 BMW 6 Series. Recalls have addressed issues such as fuel leaks and airbag malfunctions. Check the NHTSA website with the VIN for the specific vehicle to verify if all recall work has been performed.
Long-term reliability can be a concern due to the complexity of the vehicle and the age of the components. Preventative maintenance and addressing issues promptly are essential to maintaining the vehicle's reliability.
How long will the 2004 BMW 6 Series last?
A well-maintained 2004 BMW 6 Series can realistically reach 200,000 miles or more. However, reaching this milestone depends heavily on consistent maintenance. Neglecting scheduled services will drastically shorten its lifespan. The key weaknesses impacting long-term durability are the aforementioned engine issues (oil leaks, coolant leaks), electrical gremlins, and potential transmission problems. Cars with diligent owners who addressed issues promptly and performed preventative maintenance will naturally last longer and provide more reliable service than those that were neglected.
What Technology & Safety Features are Included?
The 2004 BMW 6 Series came equipped with a range of technology, entertainment, driver-assistance, and safety features for its time.
Tech and Entertainment: The centerpiece was the iDrive system, controlling navigation, audio, climate, and vehicle settings. It included a central display screen and a rotary controller. Standard audio was a premium sound system, with an optional Logic7 upgrade available. Features included a CD player and radio.
Driver-Assistance: Available features included parking sensors, adaptive headlights (xenon headlights that swivel with the steering wheel), and active cruise control (maintaining a set distance from the vehicle ahead).
Safety Features: Standard safety equipment included anti-lock brakes (ABS), dynamic stability control (DSC), traction control, front and side airbags, and curtain airbags. The car also had a strong body structure designed to absorb impact energy.
Optional Features: Beyond those listed above, optional features included a navigation system, heated seats, and a sport package that included sport seats and suspension.
Crash-Test Ratings: The NHTSA and IIHS crash-test ratings for the 2004 BMW 6 Series should be researched. Data may be limited due to the car's age and the specific models tested. Always research the latest safety information from reputable sources.
Tech and Entertainment: The centerpiece was the iDrive system, controlling navigation, audio, climate, and vehicle settings. It included a central display screen and a rotary controller. Standard audio was a premium sound system, with an optional Logic7 upgrade available. Features included a CD player and radio.
Driver-Assistance: Available features included parking sensors, adaptive headlights (xenon headlights that swivel with the steering wheel), and active cruise control (maintaining a set distance from the vehicle ahead).
Safety Features: Standard safety equipment included anti-lock brakes (ABS), dynamic stability control (DSC), traction control, front and side airbags, and curtain airbags. The car also had a strong body structure designed to absorb impact energy.
Optional Features: Beyond those listed above, optional features included a navigation system, heated seats, and a sport package that included sport seats and suspension.
Crash-Test Ratings: The NHTSA and IIHS crash-test ratings for the 2004 BMW 6 Series should be researched. Data may be limited due to the car's age and the specific models tested. Always research the latest safety information from reputable sources.
What Colors Options are Available?
Exterior Colors
Black Sapphire Metallic
Silver Grey Metallic
Titanium Silver Metallic
Deep Green Metallic
Mediterranean Blue Metallic
Stratus Grey Metallic
Alpine White
Interior Colors
Cream Beige
Black
Grey
2004 BMW 6 Series Prices and Market Value
When new, the 2004 BMW 645Ci had an MSRP starting around $70,000. Current used market prices vary significantly based on condition, mileage, and location. Expect to find examples ranging from $5,000 to $15,000 or more for exceptionally well-maintained, low-mileage cars. Depreciation has been substantial due to the car's age, potential maintenance costs, and technological obsolescence. Factors affecting resale value include mechanical condition, cosmetic appearance, documented maintenance history, and the presence of desirable options. Convertibles generally command slightly higher prices.
2004 BMW 6 Series Cost of Ownership
The 2004 BMW 6 Series is generally considered a costly vehicle to own long-term. Insurance premiums can be higher than average due to the car's performance and potential repair costs. Fuel economy is not particularly impressive. Maintenance and repair costs can be substantial, especially if significant repairs are needed. Parts can be expensive, and specialized knowledge may be required for certain repairs. Budgeting for unexpected repairs is crucial when considering a car of this age and complexity.
2004 BMW 6 Series Fuel Efficiency
Fuel Type
Gasoline
Fuel Capacity
44.67 liters
City Mileage
6.12 km/l
Highway Mileage
3.66 km/l
2004 BMW 6 Series Safety Rating
NHTSA
IIHS
2004 BMW 6 Series Warranty
Basic
Original warranty
48 months / 50,000 miles
Estimated remaining
Expired
Powertrain
Original warranty
48 months / 50,000 miles
Estimated remaining
Expired
Rust
Original warranty
72 months / unlimited miles
Estimated remaining
Expired
2004 BMW 6 Series Insurance
Insurance for a 2004 BMW 6 Series is moderately priced, reflecting its status as a Coupe with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 2004 BMW 6 Series Compare to Other Coupe?
The 2004 BMW 6 Series competed with cars like the Mercedes-Benz CLK-Class, Jaguar XK, and Porsche 911. In terms of performance, the 645Ci offered a strong V8 engine, but the Porsche 911 delivered superior handling and a more engaging driving experience. The Mercedes-Benz CLK-Class provided a more luxurious and comfortable ride, while the Jaguar XK offered a blend of luxury and performance with a distinctive British flair.
In terms of features, the 6 Series was well-equipped, but the iDrive system was often criticized for its complexity compared to the simpler interfaces of its rivals. Reliability is a significant concern for the 6 Series, with the Mercedes-Benz CLK-Class generally considered more reliable.
Price-wise, used examples of these cars are all relatively affordable now, but the potential for expensive repairs makes the 6 Series a riskier proposition. If reliability is a primary concern, the Mercedes-Benz CLK-Class might be a better alternative. For a sportier experience, the Porsche 911 remains a top choice, though it comes at a higher price point. The Jaguar XK offers a unique blend of luxury and performance, and it's worth considering if you appreciate its distinctive styling.
In terms of features, the 6 Series was well-equipped, but the iDrive system was often criticized for its complexity compared to the simpler interfaces of its rivals. Reliability is a significant concern for the 6 Series, with the Mercedes-Benz CLK-Class generally considered more reliable.
Price-wise, used examples of these cars are all relatively affordable now, but the potential for expensive repairs makes the 6 Series a riskier proposition. If reliability is a primary concern, the Mercedes-Benz CLK-Class might be a better alternative. For a sportier experience, the Porsche 911 remains a top choice, though it comes at a higher price point. The Jaguar XK offers a unique blend of luxury and performance, and it's worth considering if you appreciate its distinctive styling.
Ranks #153 Coupe
| 1 | 2023 Toyota GR Supra | (0.0★) |
| 2 | 2023 Lexus RC F | (0.0★) |
| 3 | 2011 Honda CR-Z | (5.0★) |
| 4 | 2023 Subaru BRZ | (5.0★) |
| 5 | 2011 Mazda RX-8 | (4.0★) |
| 6 | 2024 BMW 4 Series | (0.0★) |
| 7 | 2022 Mercedes-Benz C-Class | (4.0★) |
| 8 | 2014 Ford Mustang | (5.0★) |
| 9 | 2023 Audi A5 Cabriolet | (0.0★) |
| 10 | 2023 Nissan GT-R | (0.0★) |
| 11 | 2015 Hyundai Veloster | (0.0★) |
| 12 | 2008 Chevrolet Corvette | (5.0★) |
| 153 | 2004 BMW 6 Series | (0.0★) |
Final Verdict: Is the 2004 BMW 6 Series a Good Coupe?
The 2004 BMW 6 Series (645Ci) is ideal for someone who appreciates its distinctive styling, powerful V8 engine, and luxurious features, and is willing to accept the potential for higher maintenance costs. It's worth buying only if you find a well-maintained example with a comprehensive service history. A pre-purchase inspection by a qualified BMW mechanic is essential. Buying a lower-mileage example might reduce the risk of immediate problems, but it won't eliminate the potential for future issues. If reliability and low running costs are priorities, there are better alternatives in its class. Approach with caution and realistic expectations.
Drew B
Drew is a seasoned automotive expert and contributor to VinCheck.info. With nearly 15 years of experience as a former Porsche technician, he brings a wealth of hands-on knowledge to his writing. Born in North Carolina, a region renowned for its deep-rooted NASCAR culture, Drew developed a passion for cars early in life, often building and working on vehicles from a young age. At VINCheck, Drew leverages his extensive technical background to provide in-depth analyses of various vehicles. His articles often focus on engine performance, reliability, and maintenance insights, offering readers practical information grounded in real-world experience. Some of his notable contributions include reviews on the Mazda CX-5's longevity and detailed examinations of engine options for models like the 2011 Toyota Camry and Tacoma