2015-2019 BMW 7 Series Long (G12) 750Li (450 Hp) Steptronic

The BMW 750Li (G12) represents the long-wheelbase variant of the sixth-generation BMW 7 Series, produced from 2015 to 2019. Positioned as a high-performance luxury sedan, the 750Li distinguished itself with a potent 4.4-liter twin-turbocharged V8 engine paired with an eight-speed Steptronic automatic transmission. This configuration was aimed at buyers seeking a blend of exhilarating performance and opulent comfort, particularly in markets where rear-seat space and a smooth ride were highly valued. The “Li” designation signifies the extended wheelbase, adding approximately 140mm (5.5 inches) to the standard 7 Series, primarily benefiting rear passenger legroom.

Technical Specifications

INTRODUCTION

The BMW 750Li (G12) arrived as a significant evolution of BMW’s flagship sedan. Building upon the foundation laid by the F01/F02 7 Series, the G12 generation embraced lightweight construction – utilizing carbon fiber reinforced plastic (CFRP) in the structural elements – and a new engine family. The 750Li, specifically, catered to a clientele desiring a powerful and luxurious experience, often prioritizing rear-seat comfort for chauffeured transport. Production spanned from 2015 to 2019, with the model receiving a Life Cycle Impulse (LCI) facelift in 2019, introducing revised styling and updated technology.

Powertrain & Engine Architecture

At the heart of the 750Li lies the N63B44C engine, a 4.4-liter twin-turbocharged V8. This engine represents a significant advancement over its predecessor, featuring a direct injection system, Valvetronic variable valve timing, and double-VANOS variable camshaft timing. The twin-scroll turbochargers are positioned within the V-shaped engine bank, optimizing exhaust gas flow and minimizing turbo lag. The engine produces 450 horsepower at 5,500-6,000 rpm and a substantial 650 Nm (479.42 lb-ft) of torque between 1,800 and 4,500 rpm. This broad torque curve contributes to effortless acceleration and strong in-gear performance. The engine is mated to an eight-speed Steptronic automatic transmission, offering smooth and responsive gear changes. This transmission features adaptive shift programs that adjust to the driver’s style and road conditions. The Steptronic transmission also includes a manual shift mode, allowing drivers to take greater control.

Driving Characteristics

The 750Li delivers a driving experience that balances performance and comfort. The potent V8 engine provides brisk acceleration, with 0-60 mph times consistently around 4.5 seconds. The eight-speed automatic transmission is well-tuned, providing seamless shifts and contributing to a relaxed cruising experience. While the long wheelbase and increased weight (1865 kg / 4111.62 lbs) compared to the standard 7 Series do slightly diminish agility, the 750Li still feels composed and confident in corners. The adaptive suspension, often equipped as standard or an option, further enhances ride quality, effectively absorbing bumps and providing a smooth, isolated ride. Compared to the 740i (inline-six) or the 750d (diesel), the 750Li offers a more responsive and characterful engine, albeit with slightly higher fuel consumption.

Equipment & Trim Levels

The 750Li came generously equipped, reflecting its position as a flagship luxury sedan. Standard features typically included leather upholstery, power-adjustable heated and ventilated front seats with massage function, a premium sound system (often Bowers & Wilkins), a large infotainment screen with iDrive controller, navigation, and a comprehensive suite of driver-assistance systems. Optional extras included rear-seat entertainment systems, individual rear seats with a center console, a panoramic sunroof, and various cosmetic enhancements. Interior trim options ranged from luxurious wood veneers to aluminum accents, allowing buyers to personalize the cabin to their preferences.

Chassis & Braking

The G12 7 Series utilizes a sophisticated chassis design, incorporating lightweight materials like CFRP in the passenger cell. The front suspension features a double-wishbone setup, while the rear employs an independent multi-link suspension. This configuration provides a comfortable ride and precise handling. The 750Li is equipped with ventilated disc brakes on all four wheels, providing ample stopping power. Anti-lock braking system (ABS), dynamic stability control (DSC), and traction control are standard safety features. Available options included integral active steering, which can adjust the steering ratio based on speed and driving conditions, further enhancing agility.

Market Reception & Comparison

The 750Li was generally well-received by automotive critics, who praised its powerful engine, luxurious interior, and advanced technology. However, some reviewers noted that the long wheelbase could make the car feel cumbersome in tight spaces. Compared to its rivals, such as the Mercedes-Benz S-Class and Audi A8, the 750Li offered a more driver-focused experience, with sharper handling and a more engaging engine. Fuel economy, while respectable for a V8-powered luxury sedan (8.0-8.3 l/100 km), was higher than that of the 740i or 750d models. Reliability reports have been generally positive, although some owners have reported issues with the complex electronic systems.

Legacy

The BMW 750Li (G12) remains a desirable used luxury sedan, offering a compelling combination of performance, comfort, and technology. The N63B44C engine, while complex, has proven to be relatively durable when properly maintained. Regular servicing, including oil changes and inspections of the turbochargers and cooling system, is crucial for long-term reliability. Today, the 750Li represents a significant step forward in BMW’s luxury sedan lineage, showcasing the brand’s commitment to innovation and driving pleasure. Its blend of power, refinement, and advanced features continues to appeal to discerning buyers seeking a high-end automotive experience.