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BMW 6 Series Convertible (F12) 640i (320 Hp) Steptronic
Overall Rating
BMW 6 Series:
The BMW 6 Series is a range of grand tourers produced by BMW since 1976. It is the successor to the E9 Coupé and is currently in its fourth generation.
The first generation BMW E24 6 Series was available solely as a two-door coupé and produced from 1976 to 1989, when it was supplanted by the larger BMW 8 Series. When the 6 Series nameplate was revived in 2004 for the second generation, the BMW E63/E64 6 Series, the coupé was joined by a convertible body style. The third generation F06/F12/F13 6 Series debuted in 2011 as a coupé and convertible, and a sedan variant known as the "Gran Coupé" in 2012. When the F06/F12/F13 6 Series ended production, the "Gran Coupé"/coupé/convertible models have been shifted into the more upmarket BMW 8 Series nameplate. The fourth generation 6 Series, the G32 6 Series, debuted in mid-2017 and is offered only as a fastback body style to complement the BMW 5 Series sedan/wagon....(Read more on Wikipedia)
Convertible (F12) Overview:
BMW 6 Series (Convertible (F12)). With 450 Nm of torque, it offers ample pulling power. It has moderate fuel consumption (~10.9 l/100km). With a weight of 1840 kg, it falls in the mid‑range. Rear‑wheel drive offers dynamic handling and sporty feedback. Acceleration is excellent (0–100 km/h in 5.7 s). The top speed reaches 250 km/h. A convertible car with a retractable roof, offering open-air driving experiences. Seating for 4 makes it ideal for daily use.
640i (320 Hp) Steptronic Verdict:
Performance Verdict
The inline-six offers smooth, strong power delivery and respectable acceleration for a luxury convertible.
Fuel Economy
Very good fuel efficiency for a petrol engine of this power, making it a more economical choice for daily use.
Pros and Cons:
Pros:
- • Elegant styling and luxurious interior
- • Powerful and refined engine options (V8 and I6)
- • Comfortable ride for a grand tourer
- • High-quality materials and advanced technology
- • Excellent open-top driving experience
Cons:
- • High purchase price and significant depreciation
- • N63 V8 engine can have reliability concerns
- • Limited rear passenger space for a 4-seater
- • Fuel consumption can be high on V8 models
- • Large size can make city driving and parking challenging
Specifications:
Specifications are compared to those of the previous generation(E63, facelift 2007: 2007 - 2010).
| General: | |
|---|---|
| Brand: | BMW |
| Model: | 6 Series |
| Generation: | Convertible (F12) |
| Modification (Engine): | 640i (320 Hp) Steptronic |
| Start of production: | 2011 |
| End of production: | 2015 |
| Powertrain Architecture: | Internal Combustion engine |
| Body type: | Cabriolet |
| Seats: | 4 |
| Doors: | 2 |
| Engine: | |
|---|---|
| Power: | 320 Hp @ 5800-6000 rpm. Same horsepower |
| Power per litre: | 107.4 Hp/l [74mm more] |
| Torque: | 450 Nm @ 1300-4500 rpm. |
| Engine Model/Code: | N55B30A More details about the engine N55B30A |
| Engine displacement: | 2979 |
| Number of cylinders: | 6 |
| Engine configuration: | Inline |
| Number of valves per cylinder: | 4 |
| Fuel injection system: | Direct injection |
| Engine aspiration: | Twin-power turbo, Intercooler |
| Engine oil capacity: | 6.5 l |
| Coolant: | 9.3 l |
| Engine layout: | Front, Longitudinal |
| Cylinder Bore: | 84 mm mm |
| Piston Stroke: | 89.6 mm mm |
| Compression ratio: | 10.2:1 |
| Performance: | |
|---|---|
| Fuel Type: | Petrol (Gasoline) |
| Fuel consumption (economy) - urban: | 10.9 l/100 km |
| Fuel consumption (economy) - extra urban: | 6.2 l/100 km |
| Fuel consumption (economy) - combined: | 7.9 l/100 km |
| Emission standard: | Euro 5 |
| Acceleration 0 - 100 km/h: | 5.7 sec |
| Acceleration 0 - 62 mph: | 5.7 sec |
| Maximum speed: | 250 km/h |
| Weight-to-power ratio: | 5.8 kg/Hp, 173.9 Hp/tonne |
| Weight-to-torque ratio: | 4.1 kg/Nm, 244.6 Nm/tonne |
| Acceleration 0 - 60 mph: | 5.4 sec |
| Space: | |
|---|---|
| Kerb Weight: | 1840 |
| Max. weight: | 2290 |
| Max load: | 450 |
| Trunk (boot) space - maximum: | 350 l |
| Trunk (boot) space - minimum: | 300 l |
| Fuel tank capacity: | 70 l |
| Size: | |
|---|---|
| Length: | 4894 mm mm [74mm more] |
| Width: | 1894 mm mm [39mm more] |
| Height: | 1365 mm mm [9mm less] |
| Wheelbase: | 2855 mm mm [75mm more] |
| Front track: | 1600 mm |
| Rear (Back) track: | 1665 mm |
| Ride height (ground clearance): | 123 mm |
| Minimum turning circle (turning diameter): | 11.7 m [above average] |
| Powertrain: | |
|---|---|
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears | 8 |
| Transmission type | Automatic |
| Gearbox type | Steptronic |
| Front brakes | Ventilated discs [Best for performance and cooling.] |
| Rear brakes | Ventilated discs [Best for performance and cooling.] |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 225/55 R17 97Y |
| Wheel rims size | 8J x 17 |
| Front suspension | Double wishbone |
| Rear suspension | Independent multi-link suspension |
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