The BMW 545i (E60) represented a significant iteration of BMW’s flagship executive sedan, produced from 2003 to 2005. Positioned as a high-performance variant within the E60 5 Series range, it offered a compelling blend of luxury, technology, and driving dynamics. This model year bridged the gap between the traditionally styled E39 and the more controversial, Chris Bangle-designed E60, establishing a new benchmark for BMW’s mid-size offering. The 545i, equipped with the Steptronic automatic transmission, aimed to deliver a refined and powerful driving experience, appealing to buyers seeking both comfort and performance in a premium package.
Technical Specifications
| Brand | BMW |
| Model | 5 Series |
| Generation | 5 Series (E60) |
| Type (Engine) | 545i (333 Hp) Steptronic |
| Start of production | 2003 |
| End of production | 2005 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 15.8 l/100 km (14.9 US mpg, 17.9 UK mpg, 6.3 km/l) |
| Fuel consumption (extra urban) | 7.7 l/100 km (30.5 US mpg, 36.7 UK mpg, 13 km/l) |
| Fuel consumption (combined) | 10.6 l/100 km (22.2 US mpg, 26.6 UK mpg, 9.4 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.8 sec |
| Acceleration 0 – 62 mph | 5.8 sec |
| Acceleration 0 – 60 mph | 5.5 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Weight-to-power ratio | 4.9 kg/Hp, 203 Hp/tonne |
| Weight-to-torque ratio | 3.6 kg/Nm, 274.4 Nm/tonne |
| Power | 333 Hp @ 6100 rpm |
| Power per litre | 75.7 Hp/l |
| Torque | 450 Nm @ 3600 rpm (331.9 lb.-ft. @ 3600 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | N62B44 |
| Engine displacement | 4398 cm3 (268.38 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 92 mm (3.62 in.) |
| Piston Stroke | 82.7 mm (3.26 in.) |
| Compression ratio | 10:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 8 l (8.45 US qt | 7.04 UK qt) |
| Coolant | 13.8 l (14.58 US qt | 12.14 UK qt) |
| Kerb Weight | 1640 kg (3615.58 lbs.) |
| Max. weight | 2190 kg (4828.12 lbs.) |
| Max load | 550 kg (1212.54 lbs.) |
| Trunk (boot) space – minimum | 520 l (18.36 cu. ft.) |
| Fuel tank capacity | 70 l (18.49 US gal | 15.4 UK gal) |
| Length | 4841 mm (190.59 in.) |
| Width | 1846 mm (72.68 in.) |
| Height | 1464 mm (57.64 in.) |
| Wheelbase | 2888 mm (113.7 in.) |
| Front track | 1558 mm (61.34 in.) |
| Rear (Back) track | 1582 mm (62.28 in.) |
| Drag coefficient (Cd) | 0.29 |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 6 gears, automatic transmission |
| Front suspension | Coil spring |
| 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 | 225/55 R16 |
| Wheel rims size | 7J x 16 LM |
Powertrain & Engine Architecture
The heart of the 545i was the N62B44, a 4.4-liter naturally aspirated V8 engine. This engine represented a significant advancement over its predecessor, the M62, featuring aluminum construction, double VANOS (variable valve timing), and a more sophisticated engine management system. The N62B44 produced 333 horsepower at 6100 rpm and 332 lb-ft of torque at 3600 rpm. Fuel was delivered via multi-port fuel injection, and the engine boasted a 10:1 compression ratio. The Steptronic automatic transmission, a 6-speed unit, was specifically tuned to complement the V8’s power delivery. This transmission offered both fully automatic operation and a manual shift mode, allowing drivers to exert more control over gear selection. The transmission’s programming prioritized smooth shifts and responsive acceleration.
Driving Characteristics
The 545i with the Steptronic transmission offered a distinctly refined driving experience. While not as overtly sporty as the 545i equipped with a manual gearbox, the automatic provided seamless acceleration and effortless cruising. The Steptronic transmission’s gear ratios were optimized for both performance and fuel efficiency. In typical driving conditions, the transmission would upshift smoothly and proactively, keeping the engine within its optimal power band. The automatic’s manual shift mode allowed drivers to hold gears for longer, providing more control during spirited driving. Compared to the 530i, the 545i offered a substantial increase in power and torque, resulting in noticeably quicker acceleration and improved passing performance. However, the 545i’s added weight and larger engine did result in slightly reduced fuel economy.
Equipment & Trim Levels
The 545i typically came well-equipped as standard. Standard features included leather upholstery, power-adjustable front seats with memory function, automatic climate control, a premium sound system, and a sunroof. Optional extras included navigation system, active suspension, sport seats, and various interior trim options. The 545i was often specified with the Sport Package, which added a sport suspension, sport seats, and unique exterior styling cues. The interior dashboard configuration was typical of the E60, with a driver-focused layout and intuitive controls. The quality of materials and fit and finish were generally excellent, reflecting BMW’s commitment to luxury and refinement.
Chassis & Braking
The E60 545i utilized a sophisticated chassis design featuring a multi-link rear suspension and a MacPherson strut front suspension. This setup provided a comfortable ride while maintaining excellent handling characteristics. The 545i was equipped with ventilated disc brakes at all four corners, providing ample stopping power. ABS (Anti-lock Braking System) was standard, enhancing safety and stability during emergency braking situations. The steering system was a rack-and-pinion setup with hydraulic power assistance, offering precise and responsive steering feel. The 545i typically came equipped with 225/55 R16 tires, providing a good balance of grip and ride comfort.
Market Reception & Comparison
The 545i was generally well-received by automotive critics, who praised its powerful engine, refined ride, and luxurious interior. However, some critics noted that the Steptronic transmission could occasionally feel hesitant or slow to respond. Compared to the 530i, the 545i offered a significant performance advantage, but at a higher price point and with slightly lower fuel economy. The 545i also faced competition from other luxury sedans, such as the Mercedes-Benz E500 and the Audi A6 4.2. In terms of reliability, the N62 V8 engine was known to be prone to certain issues, such as coolant leaks and oil consumption, requiring diligent maintenance.
Legacy
The E60 545i remains a desirable vehicle in the used car market, particularly among enthusiasts who appreciate its powerful V8 engine and refined driving experience. While the N62 engine requires careful maintenance, its robust construction and readily available parts supply make it a viable option for those willing to invest in its upkeep. The 545i’s combination of luxury, performance, and technology has cemented its place as a significant model in BMW’s history, representing a high point in the E60 generation.
