The BMW 6 Series Gran Turismo (G32) represents BMW’s foray into a niche blending coupe styling with the practicality of a hatchback and the spaciousness of a luxury sedan. The G32 LCI, or Life Cycle Impulse – a facelift introduced in 2020 – brought updated styling, technology, and powertrain options to the range. The 630i variant, powered by a 2.0-liter turbocharged four-cylinder engine producing 245 horsepower and incorporating mild-hybrid technology paired with an 8-speed Steptronic automatic transmission, was offered from July 2022 through November 2023. This configuration positioned itself as the entry point into the 6 Series Gran Turismo lineup, offering a balance of performance, efficiency, and luxury features.
Technical Specifications
| Brand | BMW |
| Model | 6 Series |
| Generation | 6 Series Gran Turismo (G32 LCI, facelift 2020) |
| Type (Engine) | 630i (245 Hp) Mild Hybrid Steptronic |
| Start of production | July, 2022 |
| End of production | November, 2023 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Grand Tourer |
| Seats | 5 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 7.1-7.9 l/100 km (33.1 – 29.8 US mpg, 39.8 – 35.8 UK mpg, 14.1 – 12.7 km/l) |
| CO2 emissions (WLTP) | 160-179 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6.7 sec |
| Acceleration 0 – 62 mph | 6.7 sec |
| Acceleration 0 – 60 mph | 6.4 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6d |
| Weight-to-power ratio | 7.3 kg/Hp, 137.3 Hp/tonne |
| Weight-to-torque ratio | 4.5 kg/Nm, 224.1 Nm/tonne |
| Battery voltage | 48 V |
| Battery technology | Lithium-ion (Li-Ion) |
| Battery location | Under the front hood |
| Electric motor power | 11 Hp |
| Power | 245 Hp @ 4500-6500 rpm |
| Power per litre | 122.6 Hp/l |
| Torque | 400 Nm @ 1600-4000 rpm (295.02 lb.-ft. @ 1600-4000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B48B20B |
| Engine displacement | 1998 cm3 (121.93 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 82 mm (3.23 in.) |
| Piston Stroke | 94.6 mm (3.72 in.) |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Twin-power turbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 5.25 l (5.55 US qt | 4.62 UK qt) |
| Kerb Weight | 1785 kg (3935.25 lbs.) |
| Max. weight | 2450 kg (5401.33 lbs.) |
| Max load | 665 kg (1466.07 lbs.) |
| Trunk (boot) space – minimum | 600 l (21.19 cu. ft.) |
| Trunk (boot) space – maximum | 1800 l (63.57 cu. ft.) |
| Fuel tank capacity | 68 l (17.96 US gal | 14.96 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Permitted trailer load with brakes (8%) | 2100 kg (4629.71 lbs.) |
| Permitted trailer load with brakes (12%) | 2100 kg (4629.71 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 100 kg (220.46 lbs.) |
| Length | 5091 mm (200.43 in.) |
| Width | 1902 mm (74.88 in.) |
| Width including mirrors | 2158 mm (84.96 in.) |
| Height | 1538 mm (60.55 in.) |
| Wheelbase | 3070 mm (120.87 in.) |
| Front track | 1615 mm (63.58 in.) |
| Rear (Back) track | 1649 mm (64.92 in.) |
| Front overhang | 874 mm (34.41 in.) |
| Rear overhang | 1147 mm (45.16 in.) |
| Ride height (ground clearance) | 138 mm (5.43 in.) |
| Drag coefficient (Cd) | 0.25 |
| Minimum turning circle (turning diameter) | 12.3 m (40.35 ft.) |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 8 gears, automatic transmission Steptronic |
| Front suspension | Coil spring, Double wishbone, Transverse stabilizer |
| Rear suspension | Independent multi-link suspension, Air suspension, Transverse stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Front wheel tires | 225/60 R17; 245/50 R18; 245/45 R19; 245/40 R20 |
| Rear wheel tires | 225/60 R17; 245/50 R18; 245/45 R19; 275/40 R19; 275/35 R20 |
| Front wheel rims | 7.5J x 17; 8J x 18; 8.5J x 19; 8.5J x 20 |
| Rear wheel rims | 7.5J x 17; 8J x 18; 8.5J x 19; 9.5J x 19; 10J x 20 |
Powertrain & Engine Architecture
The heart of the 630i is BMW’s B48B20B 2.0-liter inline-four cylinder engine. This engine utilizes a single, twin-scroll turbocharger with intercooling, direct fuel injection, and Double-VANOS variable valve timing. The B48 engine family is known for its efficiency and responsiveness. The mild-hybrid system, a 48V setup, adds a small electric motor that provides a power boost during acceleration and allows for smoother start-stop operation, improving fuel economy. The 8-speed Steptronic automatic transmission is a staple in BMW’s lineup, offering quick and smooth shifts. It features a torque converter and allows for both automatic and manual gear selection via steering wheel-mounted paddles. The transmission is tuned to prioritize comfort and efficiency in the 630i, with gear ratios optimized for relaxed cruising.
Driving Characteristics
The 630i Gran Turismo delivers a comfortable and refined driving experience. While not as overtly sporty as some of its 6 Series siblings, the 245 horsepower and 295 lb-ft of torque provide adequate performance for everyday driving and highway passing. The mild-hybrid system contributes to a responsive feel, particularly during initial acceleration. The Steptronic transmission shifts smoothly and efficiently, although it may not be as quick to downshift as some performance-oriented transmissions. Compared to the more powerful 640i models, the 630i offers a more relaxed and fuel-efficient driving experience. Against diesel variants, it provides a smoother, quieter ride, but sacrifices some low-end torque and fuel economy.
Equipment & Trim Levels
The 630i Gran Turismo typically came well-equipped as standard. Features included leather upholstery, power-adjustable front seats with memory function, a panoramic sunroof, a premium sound system, and BMW’s iDrive infotainment system with a large touchscreen display. Standard safety features included automatic emergency braking, lane departure warning, and adaptive cruise control. Optional extras included upgraded leather options, ventilated front seats, a head-up display, and a rear-seat entertainment system. Trim levels were relatively streamlined, with most customization occurring through individual options rather than distinct packages.
Chassis & Braking
The G32 Gran Turismo features a sophisticated chassis designed to balance comfort and handling. The front suspension utilizes a double-wishbone setup with a transverse stabilizer bar, while the rear employs an independent multi-link suspension with air suspension. The air suspension, particularly on higher trim levels, provides a remarkably smooth ride and allows for adjustable ride height. Braking duties are handled by ventilated discs on all four wheels, providing ample stopping power. The electronic stability control system (DSC) and anti-lock braking system (ABS) are standard, enhancing safety and control.
Market Reception & Comparison
The 6 Series Gran Turismo, and specifically the 630i variant, received mixed reviews. Critics praised its spacious interior, comfortable ride, and refined driving experience. However, some found its styling polarizing and questioned its positioning within BMW’s lineup. Compared to the 640i, the 630i offered a more affordable entry point, but at the expense of performance. Fuel economy was generally considered good for a vehicle of its size and class, benefiting from the mild-hybrid system. Reliability reports have been generally positive, with the B48 engine proving to be a robust and dependable unit.
Legacy
The BMW 6 Series Gran Turismo (G32) represented an ambitious attempt to create a unique vehicle segment. While production ended in 2023, the 630i variant remains a compelling option in the used car market for buyers seeking a spacious, comfortable, and well-equipped luxury vehicle. The B48 engine, coupled with the 8-speed Steptronic transmission, has proven to be a reliable powertrain combination, and the mild-hybrid system adds a touch of modernity and efficiency. As a relatively niche model, the G32 Gran Turismo is likely to hold its value reasonably well, appealing to those who appreciate its distinctive design and blend of practicality and luxury.
