The BMW 650i Coupe (F13 LCI), produced from 2015 to 2018, represents the facelifted version of the second-generation 6 Series. Positioned as the performance flagship of the coupe range, the 650i distinguished itself with a potent 4.4-liter twin-turbocharged V8 engine and a smooth-shifting eight-speed Steptronic automatic transmission. This variant occupied the premium segment of the 6 Series lineup, offering a blend of luxury, performance, and advanced technology. The LCI (Life Cycle Impulse) brought styling revisions, updated technology, and refinements to the engine for improved efficiency and responsiveness compared to the pre-facelift F13 models.
Technical Specifications
| Brand | BMW |
| Model | 6 Series |
| Generation | 6 Series Coupe (F13 LCI, facelift 2015) |
| Type (Engine) | 650i (450 Hp) Steptronic |
| Start of production | 2015 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 11.9-12.3 l/100 km (19.8 – 19.1 US mpg, 23.7 – 23 UK mpg, 8.4 – 8.1 km/l) |
| Fuel consumption (extra urban) | 6.6-6.8 l/100 km (35.6 – 34.6 US mpg, 42.8 – 41.5 UK mpg, 15.2 – 14.7 km/l) |
| Fuel consumption (combined) | 8.6-8.8 l/100 km (27.4 – 26.7 US mpg, 32.8 – 32.1 UK mpg, 11.6 – 11.4 km/l) |
| CO2 emissions | 199-206 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 4.6 sec |
| Acceleration 0 – 62 mph | 4.6 sec |
| Acceleration 0 – 60 mph | 4.4 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 4 kg/Hp, 250.7 Hp/tonne |
| Weight-to-torque ratio | 2.8 kg/Nm, 362.1 Nm/tonne |
| Power | 450 Hp @ 5500-6000 rpm |
| Power per litre | 102.4 Hp/l |
| Torque | 650 Nm @ 2000-4500 rpm (479.42 lb.-ft. @ 2000-4500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | N63B44B |
| Engine displacement | 4395 cm3 (268.2 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 89 mm (3.5 in.) |
| Piston Stroke | 88.3 mm (3.48 in.) |
| Compression ratio | 10:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Twin-power turbo, Intercooler |
| Engine oil capacity | 9 l (9.51 US qt | 7.92 UK qt) |
| Coolant | 10.9 l (11.52 US qt | 9.59 UK qt) |
| Kerb Weight | 1795 kg (3957.3 lbs.) |
| Max. weight | 2310 kg (5092.68 lbs.) |
| Max load | 515 kg (1135.38 lbs.) |
| Trunk (boot) space – minimum | 460 l (16.24 cu. ft.) |
| Fuel tank capacity | 70 l (18.49 US gal | 15.4 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Length | 4894 mm (192.68 in.) |
| Width | 1894 mm (74.57 in.) |
| Height | 1369 mm (53.9 in.) |
| Wheelbase | 2855 mm (112.4 in.) |
| Front track | 1600 mm (62.99 in.) |
| Rear (Back) track | 1665 mm (65.55 in.) |
| Ride height (ground clearance) | 124 mm (4.88 in.) |
| Drag coefficient (Cd) | 0.30 |
| Minimum turning circle (turning diameter) | 11.7 m (38.39 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 8 gears, automatic transmission Steptronic |
| Front suspension | Double wishbone |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Disc |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 245/45 R18; 275/45 R18; 245/40 R19; 275/35 R19; 245/35 R20; 275/30 R20 |
| Wheel rims size | 8J x 18; 9J x 18; 8.5J x 19; 9J x 19; 8.5J x 20; 9J x 20 |
Powertrain & Engine Architecture
The heart of the 650i is BMW’s N63B44B engine, a 4.4-liter twin-turbocharged V8. This engine utilizes direct fuel injection and Valvetronic variable valve timing and lift, optimizing both power and efficiency. The twin-turbocharger setup employs two, twin-scroll turbochargers positioned within the V-angle of the engine, minimizing turbo lag and providing a broad torque curve. The LCI version of the N63 received updates to the turbocharger design, fuel injectors, and cooling system, resulting in increased power output and improved thermal management. The eight-speed Steptronic automatic transmission is a key component of the powertrain, offering smooth and rapid gear changes. It features a torque converter lockup clutch for improved efficiency at cruising speeds and paddle shifters for manual control. The transmission is programmed with driving modes (Comfort, Sport, Sport+) that adjust shift points and throttle response.
Driving Characteristics
The 650i delivers a refined yet exhilarating driving experience. The 450 horsepower and 650 lb-ft of torque provide effortless acceleration, with a 0-60 mph time of around 4.4 seconds. The Steptronic transmission complements the engine perfectly, providing seamless gear changes and contributing to a smooth ride. Compared to the 640i models, the 650i offers significantly more power and torque, resulting in a more responsive and engaging driving experience. While not as overtly sporty as some competitors, the 650i strikes a balance between performance and comfort, making it a capable grand tourer. The rear-wheel-drive configuration provides a traditional BMW driving feel, with precise steering and balanced handling.
Equipment & Trim Levels
The 650i came standard with a comprehensive list of features, including leather upholstery, power-adjustable heated front seats, a premium sound system, a navigation system, and a rearview camera. Optional extras included features like active steering, adaptive cruise control, a head-up display, and upgraded interior trim options. The interior design emphasized luxury and craftsmanship, with high-quality materials and attention to detail. Available interior color schemes and trim options allowed for a degree of personalization. The LCI facelift brought updated iDrive infotainment system with improved graphics and functionality.
Chassis & Braking
The 650i features a double-wishbone front suspension and an independent multi-link rear suspension, providing a comfortable ride and precise handling. The suspension is tuned to balance comfort and performance, offering a good compromise between the two. The braking system consists of ventilated disc brakes on all four wheels, providing ample stopping power. Anti-lock brakes (ABS), dynamic stability control (DSC), and traction control are standard safety features. The 650i typically came equipped with larger brake rotors and calipers compared to the 640i models, reflecting its higher performance capabilities.
Market Reception & Comparison
The 650i Coupe was generally well-received by automotive critics, who praised its powerful engine, refined ride, and luxurious interior. However, some critics noted that the car’s size and weight could make it feel less agile than some competitors. Compared to the 640i, the 650i offered a significant performance upgrade, but at a higher price point. Fuel economy was reasonable for a V8-powered coupe, but not exceptional. Reliability was generally good, although some owners reported issues with the cooling system and turbochargers.
Legacy
The BMW 650i Coupe (F13 LCI) remains a desirable grand tourer in the used car market. The N63B44B engine, while complex, is generally considered robust when properly maintained. Regular oil changes and attention to cooling system components are crucial for long-term reliability. The combination of performance, luxury, and technology makes the 650i a compelling option for buyers seeking a sophisticated and capable coupe. Its status as a modern classic is growing, and well-maintained examples are likely to hold their value.
