The BMW 740i, part of the F01 LCI (Life Cycle Impulse) facelift generation of the 7 Series produced from 2012 to 2015, represented a compelling blend of performance and luxury within BMW’s flagship sedan lineup. Positioned as a mid-range offering, it slotted between the entry-level 730d and the high-performance 750i models. The F01 LCI brought styling revisions, updated technology, and refined engine options to the already sophisticated 7 Series, aiming to maintain its competitive edge in the full-size luxury segment. This variant, equipped with the N55B30A engine and the 8-speed Steptronic automatic transmission, was primarily marketed towards buyers seeking a powerful yet relatively efficient driving experience, prioritizing comfort and technology over outright track performance.
Technical Specifications
| Brand | BMW |
| Model | 7 Series |
| Generation | 7 Series (F01 LCI, facelift 2012) |
| Type (Engine) | 740i (320 Hp) Steptronic |
| Start of production | 2012 |
| End of production | 2015 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 10.6 l/100 km (22.2 US mpg, 26.6 UK mpg, 9.4 km/l) |
| Fuel consumption (extra urban) | 6.3 l/100 km (37.3 US mpg, 44.8 UK mpg, 15.9 km/l) |
| Fuel consumption (combined) | 7.9 l/100 km (29.8 US mpg, 35.8 UK mpg, 12.7 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.7 sec |
| Acceleration 0 – 62 mph | 5.7 sec |
| Acceleration 0 – 60 mph | 5.4 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Weight-to-power ratio | 5.9 kg/Hp, 168.4 Hp/tonne |
| Weight-to-torque ratio | 4.2 kg/Nm, 236.8 Nm/tonne |
| Power | 320 Hp @ 5800 rpm |
| Power per litre | 107.4 Hp/l |
| Torque | 450 Nm @ 1300-4500 rpm (331.9 lb.-ft. @ 1300-4500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | N55B30A |
| Engine displacement | 2979 cm3 (181.79 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 84 mm (3.31 in.) |
| Piston Stroke | 89.6 mm (3.53 in.) |
| Compression ratio | 10.2:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Coolant | 10.2 l (10.78 US qt | 8.97 UK qt) |
| Kerb Weight | 1900 kg (4188.78 lbs.) |
| Max. weight | 2515 kg (5544.63 lbs.) |
| Max load | 615 kg (1355.84 lbs.) |
| Fuel tank capacity | 80 l (21.13 US gal | 17.6 UK gal) |
| Length | 5079 mm (199.96 in.) |
| Width | 1902 mm (74.88 in.) |
| Height | 1471 mm (57.91 in.) |
| Wheelbase | 3070 mm (120.87 in.) |
| Front track | 1611 mm (63.43 in.) |
| Rear track | 1650 mm (64.96 in.) |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears | 8 |
| Gearbox type | Automatic transmission Steptronic |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Tires size | 245/50 R18 100Y |
| Wheel rims size | 8J x 18 |
Powertrain & Engine Architecture
The heart of the 740i was the N55B30A, a 3.0-liter inline-six cylinder engine. This engine was a significant evolution of BMW’s renowned straight-six design, incorporating direct fuel injection, a twin-scroll turbocharger, and variable valve timing (VANOS) and valve lift (Valvetronic) technologies. These features worked in concert to deliver a broad torque curve and impressive power output. The N55 engine was known for its responsiveness and relatively smooth operation. The 8-speed Steptronic automatic transmission, a ZF-sourced unit, was a key component of the 740i’s driving experience. It offered smooth and quick shifts, contributing to both performance and fuel efficiency. The transmission featured adaptive shift programs, allowing it to adjust to the driver’s style and road conditions. Manual shift control was also available via steering wheel-mounted paddles or the gear selector.
Driving Characteristics
The 740i offered a refined and capable driving experience. The 320 horsepower and 331 lb-ft of torque provided ample power for effortless cruising and confident overtaking. Acceleration from 0 to 60 mph took approximately 5.4 seconds, making it a genuinely quick sedan. While not as overtly sporty as the 750i, the 740i’s chassis tuning prioritized comfort and stability. The suspension absorbed bumps effectively, providing a smooth ride even on less-than-perfect roads. The Steptronic transmission’s well-chosen gear ratios ensured that the engine was always in its optimal power band. Compared to the 730d, the 740i offered significantly more performance, while the 750i, with its V8 engine, provided even greater power but at the expense of fuel economy.
Equipment & Trim Levels
The 740i came standard with a comprehensive array of luxury features, including leather upholstery, power-adjustable heated front seats, a premium sound system, a navigation system, and a sunroof. BMW’s iDrive infotainment system controlled many of the vehicle’s functions. Optional extras included features such as massaging seats, rear-seat entertainment, adaptive cruise control, a head-up display, and various interior trim options. The standard interior color schemes were typically conservative, with black, beige, and gray options available. Buyers could also choose from a range of wood or aluminum trim accents.
Chassis & Braking
The 740i utilized a double-wishbone front suspension and an integral-link rear suspension, designed to provide a comfortable ride and precise handling. The suspension geometry was tuned to minimize body roll and maximize stability. Ventilated disc brakes were fitted to all four wheels, providing ample stopping power. Anti-lock braking system (ABS), dynamic stability control (DSC), and traction control were standard safety features. The steering system employed a rack-and-pinion setup with power assistance, offering a balanced feel and responsive steering.
Market Reception & Comparison
The 740i was generally well-received by automotive critics. It was praised for its powerful engine, comfortable ride, and luxurious interior. Reviewers noted that the N55 engine provided a good balance of performance and fuel efficiency. Compared to its competitors, such as the Mercedes-Benz S-Class and the Audi A8, the 740i was often seen as offering a more engaging driving experience. Fuel economy was respectable for a vehicle of its size and performance, averaging around 29.8 US mpg in combined driving. Reliability was generally good, although some owners reported minor issues with the iDrive system and certain electronic components.
Legacy
The BMW 740i (F01 LCI) remains a desirable used luxury sedan. The N55 engine is known for its durability and relatively low maintenance costs, provided it is properly maintained. The 8-speed Steptronic transmission is also considered reliable. While the F01 generation 7 Series is now superseded by newer models, it continues to offer a compelling combination of luxury, performance, and value in the used car market. Its sophisticated engineering and refined driving experience ensure that it remains a respected and sought-after vehicle among BMW enthusiasts.
