The BMW 745d, introduced as part of the E65 facelift in 2005, represented a significant step in BMW’s diesel engine technology for its flagship sedan. Positioned as a mid-to-high range offering within the E65 7 Series lineup, it aimed to provide a blend of performance and fuel efficiency previously unseen in the large luxury segment. Production of this specific variant was limited to the 2005 model year, making it a relatively rare example of the E65 generation. The 745d was primarily marketed in Europe and other regions where diesel engines were favored, offering a compelling alternative to the gasoline-powered 745i and 760i models.
Technical Specifications
| Brand | BMW |
| Model | 7 Series |
| Generation | 7 Series (E65, facelift 2005) |
| Type (Engine) | 745d (300 Hp) Steptronic |
| Start of production | 2005 |
| End of production | 2005 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 13.5 l/100 km (17.4 US mpg, 20.9 UK mpg, 7.4 km/l) |
| Fuel consumption (extra urban) | 7.2 l/100 km (32.7 US mpg, 39.2 UK mpg, 13.9 km/l) |
| Fuel consumption (combined) | 9.5 l/100 km (24.8 US mpg, 29.7 UK mpg, 10.5 km/l) |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 6.8 sec |
| Acceleration 0 – 62 mph | 6.8 sec |
| Acceleration 0 – 60 mph | 6.5 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 6.8 kg/Hp, 147.1 Hp/tonne |
| Weight-to-torque ratio | 2.9 kg/Nm, 343.1 Nm/tonne |
| Power | 300 Hp @ 4000 rpm |
| Power per litre | 67.8 Hp/l |
| Torque | 700 Nm @ 1750-2500 rpm (516.29 lb.-ft. @ 1750-2500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M67D44 |
| Engine displacement | 4423 cm3 (269.91 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 87 mm (3.43 in.) |
| Piston Stroke | 93 mm (3.66 in.) |
| Compression ratio | 17:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | BiTurbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 9.5 l (10.04 US qt, 8.36 UK qt) |
| Coolant | 16.5 l (17.44 US qt, 14.52 UK qt) |
| Kerb Weight | 2040 kg (4497.43 lbs.) |
| Max. weight | 2620 kg (5776.11 lbs.) |
| Max load | 580 kg (1278.68 lbs.) |
| Trunk (boot) space – minimum | 500 l (17.66 cu. ft.) |
| Fuel tank capacity | 88 l (23.25 US gal, 19.36 UK gal) |
| Length | 5039 mm (198.39 in.) |
| Width | 1902 mm (74.88 in.) |
| Height | 1491 mm (58.7 in.) |
| Wheelbase | 2990 mm (117.72 in.) |
| Front track | 1578 mm (62.13 in.) |
| Rear (Back) track | 1596 mm (62.83 in.) |
| Drag coefficient (Cd) | 0.29 |
| Minimum turning circle | 12.1 m (39.7 ft.) |
| Drivetrain Architecture | Rear wheel drive |
| Drive wheel | Rear wheel drive |
| Number of gears | 6 |
| Gearbox type | Automatic transmission Steptronic |
| Front suspension | Spring Strut |
| Rear suspension | Coil spring |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 245/50 R18 |
| Wheel rims size | 18 |
INTRODUCTION
The BMW 745d (E65, facelift 2005) was a pivotal model in BMW’s strategy to offer diesel power in its luxury class vehicles. The E65 generation 7 Series, launched in 2002, was a controversial design departure for BMW, known for its iDrive system and bold styling. The 2005 facelift aimed to address some of the criticisms leveled at the original design and introduce updated technology, including the M67D44 diesel engine in the 745d. This engine was a significant advancement over previous BMW diesel offerings, providing performance comparable to many gasoline engines while delivering substantially improved fuel economy. The 745d was designed to appeal to buyers who prioritized long-distance comfort, refinement, and low running costs.
Powertrain & Engine Architecture
At the heart of the 745d lies the M67D44 4.4-liter V8 diesel engine. This engine utilized a common rail direct injection system, delivering fuel at extremely high pressure for optimized combustion. The M67D44 was notable for its twin-turbocharger setup, employing a variable geometry turbocharger (VGT) and an exhaust gas recirculation (EGR) system to reduce emissions. The engine featured a double overhead camshaft (DOHC) valvetrain with four valves per cylinder. The 6-speed Steptronic automatic transmission was specifically tuned to handle the high torque output of the diesel engine. This transmission offered both fully automatic operation and manual shift capability via steering wheel-mounted paddles or the gear selector. The transmission’s programming prioritized smooth shifts and efficient power delivery, complementing the engine’s characteristics.
Driving Characteristics
The 745d offered a distinctly different driving experience compared to its gasoline-powered siblings. While lacking the immediate responsiveness of the 745i, the 745d compensated with a massive wave of torque available from very low engine speeds. This made it exceptionally effortless for highway cruising and overtaking maneuvers. The Steptronic transmission, while smooth, wasn’t as quick to downshift as some competitors, but it generally provided appropriate gear selection for most driving situations. The substantial weight of the E65 7 Series (over 4,500 lbs) meant that the 745d didn’t feel overtly sporty, but it offered a composed and comfortable ride. Compared to the 730d (a lower-powered diesel variant), the 745d provided a noticeable performance upgrade, while still maintaining a significant fuel economy advantage over the 745i.
Equipment & Trim Levels
The 745d typically came well-equipped, reflecting its position as a luxury vehicle. Standard features included leather upholstery, power-adjustable heated front seats, automatic climate control, a premium sound system, and the iDrive infotainment system. Optional extras were plentiful, including features like active suspension, massaging seats, rear-seat entertainment, and upgraded interior trim materials. The interior design was characterized by a minimalist aesthetic, with a focus on high-quality materials and craftsmanship. The 2005 facelift brought subtle interior updates, including revised trim options and improvements to the iDrive system interface.
Chassis & Braking
The E65 7 Series utilized a robust chassis with a MacPherson strut front suspension and a multi-link rear suspension. The suspension was tuned for comfort, prioritizing a smooth ride over sharp handling. The 745d was equipped with ventilated disc brakes at the front and solid disc brakes at the rear. Anti-lock braking system (ABS) was standard, providing enhanced braking performance and stability. The steering system was a hydraulic rack-and-pinion setup, offering precise and responsive steering feel. The 745d typically rode on 18-inch alloy wheels with 245/50 R18 tires.
Market Reception & Comparison
The 745d was generally well-received by automotive critics, who praised its powerful engine, refined ride, and impressive fuel economy. However, some reviewers noted the iDrive system’s complexity and the car’s substantial weight. Compared to the 745i, the 745d offered similar performance with significantly lower fuel consumption, making it an attractive option for high-mileage drivers. Against competitors like the Mercedes-Benz S320 CDI and Audi A8 3.0 TDI, the 745d held its own in terms of performance and luxury, although some rivals offered more advanced technology features.
Legacy
The M67D44 engine proved to be a durable and reliable powerplant, with many examples exceeding high mileage without major issues. The 745d, while not a high-volume seller, has gained a following among diesel enthusiasts and those seeking a unique and refined luxury car experience. On the used car market, the 745d represents a relatively affordable entry point into the E65 7 Series range, offering a compelling combination of performance, comfort, and fuel efficiency. However, potential buyers should be aware of the potential maintenance costs associated with a complex luxury vehicle of this age, including the iDrive system and the diesel particulate filter.
