The BMW 735i, introduced in November 2022 as part of the G70 generation of the 7 Series, represents a key entry point into BMW’s flagship sedan range. Positioned below the more powerful 740i and 760i models, the 735i combines a refined driving experience with BMW’s latest technology, including a 48-volt mild hybrid system. This variant is primarily aimed at buyers seeking the prestige and luxury of a 7 Series without the higher price tag associated with the top-tier trims. It serves as a compelling alternative for those prioritizing efficiency and a smooth, comfortable ride over outright performance.
Technical Specifications
| Brand | BMW |
| Model | 7 Series |
| Generation | 7 Series (G70) |
| Type (Engine) | 735i (286 Hp) Mild Hybrid Steptronic |
| Start of production | November, 2022 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Combined fuel consumption (WLTP) | 7.9 l/100 km (29.8 US mpg) |
| CO2 emissions (WLTP) | 182 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 |
| Weight-to-torque ratio | 4.9 kg/Nm |
| Battery voltage | 48 V |
| Electric motor power | 18 Hp |
| Electric motor Torque | 200 Nm (147.51 lb.-ft.) |
| System power | 286 Hp |
| System torque | 425 Nm (313.46 lb.-ft.) |
| Power | 272 Hp @ 5000-6500 rpm |
| Torque | 400 Nm @ 1750-4500 rpm (295.02 lb.-ft. @ 1750-4500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B58 |
| Engine displacement | 2998 cm3 (182.95 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 81.99 mm (3.23 in.) |
| Piston Stroke | 94.6 mm (3.72 in.) |
| Compression ratio | 11:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Twin-power turbo, Intercooler |
| Valvetrain | VALVETRONIC |
| Kerb Weight | 2075-2150 kg (4574.59 – 4739.94 lbs.) |
| Max. weight | 2785 kg (6139.87 lbs.) |
| Max load | 635-710 kg (1399.94 – 1565.28 lbs.) |
| Trunk (boot) space – minimum | 540 l (19.07 cu. ft.) |
| Fuel tank capacity | 74 l (19.55 US gal | 16.28 UK gal) |
| Length | 5391 mm (212.24 in.) |
| Width | 1950 mm (76.77 in.) |
| Height | 1544 mm (60.79 in.) |
| Wheelbase | 3215 mm (126.57 in.) |
| Front track | 1713 mm (67.44 in.) |
| Rear (Back) track | 1736 mm (68.35 in.) |
| Drag coefficient (Cd) | 0.26 |
| Minimum turning circle | 12.9 m (42.32 ft.) |
| Drivetrain Architecture | RWD, MHEV |
| Number of gears | 8 |
| Gearbox type | Automatic Steptronic |
INTRODUCTION
The G70-generation BMW 7 Series, launched in 2022, marked a significant departure in design and technology for BMW’s flagship sedan. The 735i, introduced alongside the 740i and 760i, offers a compelling blend of luxury, performance, and efficiency. Utilizing BMW’s latest modular architecture, the 735i is designed to appeal to a broader customer base seeking a premium large sedan experience. The inclusion of a 48V mild hybrid system is a key feature, contributing to improved fuel economy and a smoother driving experience. This model is primarily sold in markets where large, luxury sedans remain popular, including North America, Europe, and select Asian countries.
Powertrain & Engine Architecture
At the heart of the 735i lies BMW’s B58 3.0-liter inline-six engine. This engine is renowned for its smooth power delivery and efficiency. The B58 utilizes direct fuel injection, a twin-scroll turbocharger, and BMW’s VALVETRONIC variable valve timing system. The addition of a 48V mild hybrid system enhances the engine’s capabilities. This system comprises a 48V starter-generator that provides an additional 18 horsepower and 200 Nm (147 lb-ft) of torque, assisting the engine during acceleration and allowing for smoother start-stop operation. The engine produces 272 horsepower at 5000-6500 rpm and 400 Nm (295 lb-ft) of torque between 1750-4500 rpm. Combined with the electric motor, the system delivers a total output of 286 horsepower and 425 Nm (313 lb-ft) of torque. Power is transmitted to the rear wheels via an eight-speed Steptronic automatic transmission, known for its quick and seamless shifts.
Driving Characteristics
The 735i delivers a refined and comfortable driving experience. The mild hybrid system provides a noticeable boost in responsiveness, particularly during initial acceleration. While not as overtly sporty as the 740i or 760i, the 735i offers ample power for effortless cruising and overtaking. The eight-speed automatic transmission is well-tuned, providing smooth gear changes and contributing to the car’s overall refinement. The gear ratios are optimized for both fuel efficiency and comfortable highway driving. Compared to higher-output versions, the 735i prioritizes smoothness and efficiency over outright performance, making it an ideal choice for drivers who value a relaxed and composed ride.
Equipment & Trim Levels
The 735i comes standard with a comprehensive suite of luxury features. Standard interior appointments include premium leather upholstery, power-adjustable front seats with heating and ventilation, a panoramic sunroof, and a high-end Bowers & Wilkins sound system. The dashboard features BMW’s latest iDrive 8 infotainment system, displayed on a large curved screen that integrates the instrument cluster and central control display. Optional extras include rear-seat entertainment systems, massaging seats, and a variety of interior trim options. The standard exterior features include LED headlights, 19-inch alloy wheels, and chrome accents.
Chassis & Braking
The 735i utilizes a sophisticated chassis design focused on ride comfort and handling balance. The front suspension features a double-wishbone setup with air suspension, while the rear employs an independent multi-link suspension, also with air suspension. This air suspension system allows for adjustable ride height and damping, further enhancing comfort. The braking system consists of ventilated discs on all four wheels, providing ample stopping power. Standard safety features include ABS, stability control, and a suite of driver-assistance systems, such as lane departure warning, automatic emergency braking, and adaptive cruise control.
Market Reception & Comparison
The 735i has been generally well-received by automotive critics, who praise its comfortable ride, refined interior, and efficient powertrain. Compared to the 740i, the 735i offers a more accessible price point without sacrificing significant levels of luxury or technology. While the 740i provides more powerful acceleration, the 735i’s mild hybrid system contributes to improved fuel economy. Against competitors such as the Mercedes-Benz S-Class and Audi A8, the 735i offers a compelling combination of performance, luxury, and technology, often at a competitive price.
Legacy
The B58 engine, used in the 735i, has proven to be a reliable and durable powerplant in other BMW models. The integration of the 48V mild hybrid system is expected to further enhance its longevity and efficiency. While it is still relatively early in the G70 generation’s lifecycle, the 735i is expected to hold its value well in the used car market due to its combination of luxury, technology, and BMW’s reputation for build quality. The 735i represents a significant step forward in BMW’s efforts to offer a more sustainable and efficient luxury sedan experience.
