The BMW 6 Series (E63) 650i, produced from 2005 to 2007, represented BMW’s flagship coupe and convertible during its production run. Positioned as the high-performance variant of the E63 generation, it aimed to blend grand touring comfort with engaging driving dynamics. The 650i occupied the top tier of the 6 Series lineup, offering a significant power upgrade over the 630i models. It was a direct competitor to vehicles like the Mercedes-Benz CL-Class and Porsche 911, targeting buyers seeking a luxurious and powerful two-door coupe.
Technical Specifications
| Brand | BMW |
| Model | 6 Series |
| Generation | 6 Series (E63) |
| Type (Engine) | 650i (367 Hp) |
| Start of production | 2005 |
| End of production | 2007 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (economy) – urban | 17.6 l/100 km (13.4 US mpg, 16.1 UK mpg, 5.7 km/l) |
| Fuel consumption (economy) – extra urban | 8.6 l/100 km (27.4 US mpg, 32.8 UK mpg, 11.6 km/l) |
| Fuel consumption (economy) – combined | 11.9 l/100 km (19.8 US mpg, 23.7 UK mpg, 8.4 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.4 sec |
| Acceleration 0 – 62 mph | 5.4 sec |
| Acceleration 0 – 60 mph | 5.1 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 4.5 kg/Hp, 223.8 Hp/tonne |
| Weight-to-torque ratio | 3.3 kg/Nm, 298.8 Nm/tonne |
| Power | 367 Hp @ 6300 rpm |
| Power per litre | 76.5 Hp/l |
| Torque | 490 Nm @ 3400 rpm (361.41 lb.-ft. @ 3400 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | N62B48 |
| Engine displacement | 4799 cm3 (292.85 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 93 mm (3.66 in.) |
| Piston Stroke | 88.3 mm (3.48 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 8 l (8.45 US qt | 7.04 UK qt) |
| Coolant | 13.8 l (14.58 US qt | 12.14 UK qt) |
| Kerb Weight | 1640 kg (3615.58 lbs.) |
| Max. weight | 2090 kg (4607.66 lbs.) |
| Max load | 450 kg (992.08 lbs.) |
| Trunk (boot) space – minimum | 450 l (15.89 cu. ft.) |
| Fuel tank capacity | 70 l (18.49 US gal | 15.4 UK gal) |
| Length | 4820 mm (189.76 in.) |
| Width | 1855 mm (73.03 in.) |
| Height | 1373 mm (54.06 in.) |
| Wheelbase | 2780 mm (109.45 in.) |
| Front track | 1558 mm (61.34 in.) |
| Rear (Back) track | 1596 mm (62.83 in.) |
| Drag coefficient (Cd) | 0.29 |
| Minimum turning circle | 11.4 m (37.4 ft.) |
| Drivetrain Architecture | Rear wheel drive |
| Drive wheel | Rear wheel drive |
| Number of gears | 6 |
| Type of gearbox | Manual transmission |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| Rear suspension | Coil spring |
| Front brakes | Disc |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 245/45 R18 |
| Wheel rims size | 18 |
Powertrain & Engine Architecture
The heart of the 650i was the N62B48, a 4.8-liter naturally aspirated V8 engine. This engine was a significant departure from the inline-six engines traditionally favored by BMW. The N62 featured all-aluminum construction, double overhead camshafts (DOHC) with four valves per cylinder, and a relatively high 10.5:1 compression ratio. Fuel was delivered via a multi-port fuel injection system. The engine produced 367 horsepower at 6300 rpm and 490 Nm (361 lb-ft) of torque at 3400 rpm. The 6-speed manual transmission was standard, providing a direct connection to the rear wheels. The engine’s design prioritized smooth power delivery and a refined driving experience over outright track performance.
Driving Characteristics
The 650i with the manual transmission offered a compelling blend of performance and luxury. Acceleration from 0-60 mph was achieved in approximately 5.1 seconds, and the car felt strong and responsive throughout the rev range. The manual gearbox allowed for precise control, enhancing the driving experience. Compared to the 630i models, the 650i provided a substantial increase in power and torque, resulting in noticeably quicker acceleration and improved passing ability. While not as nimble as some smaller sports coupes, the 650i offered a comfortable and confident ride, making it well-suited for long-distance grand touring.
Equipment & Trim Levels
The 650i came standard with a generous array of features, including leather upholstery, power-adjustable seats with memory function, automatic climate control, a premium sound system, and xenon headlights. Optional extras included features like active steering, sport seats, a navigation system, and a panoramic sunroof. Interior trim options ranged from wood veneers to aluminum accents, allowing buyers to personalize the cabin to their preferences. The standard interior color schemes were typically conservative, reflecting the car’s luxury positioning.
Chassis & Braking
The E63 6 Series featured an independent suspension system with McPherson struts at the front and a multi-link setup at the rear. This configuration provided a good balance between ride comfort and handling precision. The 650i was equipped with disc brakes on all four wheels, providing ample stopping power. Anti-lock braking system (ABS) was standard. The chassis was designed to be rigid, contributing to the car’s overall stability and handling characteristics. The steering was a hydraulic rack-and-pinion system, offering precise and responsive control.
Market Reception & Comparison
The 650i was generally well-received by automotive critics, who praised its powerful engine, luxurious interior, and refined driving experience. However, some reviewers noted the car’s relatively high price and complex electronic systems. Compared to the 630i, the 650i offered a significant performance upgrade but came at a substantial cost premium. Fuel economy was also lower with the V8 engine. Reliability was a concern for some owners, with reports of issues related to the cooling system and electronic components.
Legacy
The E63 650i remains a desirable grand tourer for enthusiasts today. The N62 V8 engine, while known for some potential maintenance issues (such as coolant hose failures and oil leaks), is generally considered robust when properly maintained. The car’s classic styling and luxurious interior continue to appeal to collectors and drivers alike. Values for well-maintained examples have remained relatively stable, reflecting the car’s enduring appeal. Finding a 650i with a complete service history is crucial, as preventative maintenance is key to avoiding costly repairs.
