The BMW 630i Convertible, part of the E64 facelift series produced from 2007 to 2010, represented a compelling blend of luxury, performance, and open-air driving enjoyment. Positioned as a mid-range offering within the 6 Series lineup, it slotted between the more accessible 630d and the higher-performance 650i models. This variant aimed to provide a refined grand touring experience with a focus on balanced power delivery and comfortable cruising, appealing to buyers who prioritized elegance over outright speed. The E64 facelift brought with it revised styling cues, updated technology, and improvements to the engine range, solidifying the 6 Series’ position as a desirable luxury convertible.
Technical Specifications
| Brand | BMW |
| Model | 6 Series |
| Generation | 6 Series Convertible (E64, facelift 2007) |
| Type (Engine) | 630i (272 Hp) Steptronic |
| Start of production | 2007 |
| End of production | 2010 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (economy) – urban (NEDC) | 11.6 l/100 km (20.3 US mpg, 24.4 UK mpg, 8.6 km/l) |
| Fuel consumption (economy) – extra urban (NEDC) | 6 l/100 km (39.2 US mpg, 47.1 UK mpg, 16.7 km/l) |
| Fuel consumption (economy) – combined (NEDC) | 8.1 l/100 km (29 US mpg, 34.9 UK mpg, 12.3 km/l) |
| CO2 emissions (NEDC) | 192 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 7 sec |
| Acceleration 0 – 62 mph | 7 sec |
| Acceleration 0 – 60 mph | 6.7 sec |
| Maximum speed | 250 km/h (155.34 mph), Electronically limited |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 6.4 kg/Hp, 155.4 Hp/tonne |
| Weight-to-torque ratio | 5.5 kg/Nm, 182.9 Nm/tonne |
| Power | 272 Hp @ 6700 rpm |
| Torque | 320 Nm @ 2750-3000 rpm (236.02 lb.-ft. @ 2750-3000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | N53B30A |
| Engine displacement | 2996 cm3 (182.83 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 85 mm (3.35 in.) |
| Piston Stroke | 88 mm (3.46 in.) |
| Compression ratio | 12:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC, Double-VANOS |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Coolant | 10.5 l (11.1 US qt | 9.24 UK qt) |
| Kerb Weight | 1750 kg (3858.09 lbs.) |
| Max. weight | 2150 kg (4739.94 lbs.) |
| Max load | 400 kg (881.85 lbs.) |
| Trunk (boot) space – minimum | 300 l (10.59 cu. ft.) |
| Trunk (boot) space – maximum | 350 l (12.36 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.) |
| Width including mirrors | 2036 mm (80.16 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.) |
| Front overhang | 942 mm (37.09 in.) |
| Rear overhang | 1098 mm (43.23 in.) |
| Drag coefficient (Cd) | 0.31 |
| Minimum turning circle (turning diameter) | 11.4 m (37.4 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 | 6 gears, automatic transmission Steptronic |
| Front suspension | Spring Strut, Transverse stabilizer |
| Rear suspension | Independent multi-link suspension, Transverse stabilizer |
| Front brakes | Ventilated discs, 348×30 mm |
| Rear brakes | Ventilated discs, 345×24 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | Front wheel tires: 245/50 R17; 245/45 R18; 245/40 R19Rear wheel tires: 245/50 R17; 245/45 R18; 275/40 R18; 275/35 R19 |
| Wheel rims size | Front wheel rims: 7.5J x 17; 8J x 18; 8.5J x 19Rear wheel rims: 7.5J x 17; 8J x 18; 9J x 18; 9J x 19 |
Powertrain & Engine Architecture
The 630i Convertible was powered by the BMW N53B30A, a 3.0-liter inline-six engine. This engine was a significant advancement over its predecessor, featuring direct fuel injection, Double-VANOS variable valve timing, and a magnesium alloy engine block for reduced weight. The N53 engine produced 272 horsepower at 6700 rpm and 320 Nm (236 lb-ft) of torque between 2750 and 3000 rpm. The engine’s design prioritized smooth power delivery and efficiency. The Steptronic automatic transmission, a six-speed unit, was standard. This transmission offered both fully automatic operation and a manual shift mode, allowing drivers to have some control over gear selection. The transmission was tuned for smooth shifts and optimized for the engine’s torque curve.
Driving Characteristics
The 630i Convertible offered a refined and comfortable driving experience. While not as aggressively sporty as the 650i, it provided ample power for both highway cruising and spirited driving. The automatic transmission, while smooth, could feel slightly less responsive than the available manual gearbox. Acceleration from 0 to 60 mph took approximately 6.7 seconds, and the electronically limited top speed was 250 km/h (155 mph). The inline-six engine delivered a linear powerband, making it easy to modulate throttle and maintain control. The suspension, tuned for comfort, absorbed bumps effectively, but body roll was noticeable during aggressive cornering.
Equipment & Trim Levels
The 630i Convertible came standard with a generous array of features, including leather upholstery, power-adjustable seats, automatic climate control, a premium sound system, and xenon headlights. Optional extras included features like active steering, sport seats, a head-up display, and a navigation system. Interior trim options allowed for customization, with a range of wood and aluminum accents available. The convertible top was a multi-layer fabric design that provided good insulation and reduced wind noise when raised.
Chassis & Braking
The E64 6 Series Convertible utilized a robust chassis with a MacPherson strut front suspension and a multi-link rear suspension. This setup provided a good balance of comfort and handling. The 630i was equipped with ventilated disc brakes on all four wheels, providing ample stopping power. Anti-lock braking system (ABS) was standard, enhancing safety and control during emergency braking situations. The steering was a hydraulic rack-and-pinion system, offering precise and responsive steering feel.
Market Reception & Comparison
The 630i Convertible was generally well-received by automotive critics. It was praised for its elegant styling, comfortable interior, and refined driving experience. However, some reviewers noted that the 630i lacked the outright performance of the 650i. Compared to the 650i, the 630i offered better fuel economy and lower running costs. It also proved to be more reliable than some of the earlier 6 Series models. Against competitors like the Mercedes-Benz SLK and Audi A5 Cabriolet, the 630i stood out with its distinctive styling and BMW’s reputation for driving dynamics.
Legacy
The BMW E64 630i Convertible has established itself as a desirable used car, particularly among enthusiasts seeking a stylish and comfortable grand tourer. The N53 engine, while generally reliable, can be prone to certain issues, such as carbon buildup on the intake valves, requiring periodic cleaning. The Steptronic transmission is generally durable, but regular maintenance is essential to ensure smooth operation. Overall, the 630i Convertible remains a compelling option for those seeking a luxurious and enjoyable open-air driving experience, offering a blend of performance, comfort, and style that continues to appeal to buyers today.
