The BMW 545i, produced between 2003 and 2005, was a high-performance variant of the E60 generation 5 Series. Positioned as a step up from the 530i and below the flagship 550i, the 545i aimed to deliver a blend of luxury, performance, and technology. It represented BMW’s continued commitment to the executive sedan segment, offering a compelling alternative to rivals like the Mercedes-Benz E-Class and Audi A6. The E60 5 Series, as a whole, was a significant departure from its predecessor (the E39), introducing controversial styling penned by Chris Bangle, alongside a host of new technologies and a more driver-focused experience.
Technical Specifications
| Brand | BMW |
| Model | 5 Series |
| Generation | 5 Series (E60) |
| Type (Engine) | 545i (333 Hp) |
| Start of production | 2003 |
| End of production | 2005 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (economy) – urban | 16.3 l/100 km (14.4 US mpg, 17.3 UK mpg, 6.1 km/l) |
| Fuel consumption (economy) – extra urban | 7.9 l/100 km (29.8 US mpg, 35.8 UK mpg, 12.7 km/l) |
| Fuel consumption (economy) – combined | 10.9 l/100 km (21.6 US mpg, 25.9 UK mpg, 9.2 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, manual 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 |
Powertrain & Engine Architecture
The heart of the 545i was the N62B44, a 4.4-liter naturally aspirated V8 engine. This engine was a significant advancement over previous BMW V8s, featuring aluminum construction, double VANOS (variable valve timing) on both intake and exhaust camshafts, and a sophisticated engine management system. The N62 utilized a multi-port fuel injection system, delivering fuel directly into the intake ports. The engine produced 333 horsepower at 6100 rpm and 332 lb-ft of torque at 3600 rpm. The 6-speed manual transmission was standard, providing precise gear changes and a direct connection to the engine. An optional 6-speed automatic transmission was also available, offering smoother shifts and convenience, though at the expense of some driver engagement.
Driving Characteristics
The 545i delivered a distinctly different driving experience compared to the 530i or the later 550i. The naturally aspirated V8 provided a linear power delivery, with strong torque available throughout the rev range. Acceleration was brisk, with 0-60 mph times around 5.5 seconds. While not as overtly aggressive as some of its competitors, the 545i offered a refined and balanced driving experience. The manual transmission enhanced driver involvement, while the automatic provided a more relaxed cruising experience. The suspension, tuned for comfort and handling, provided a good balance between ride quality and body control.
Equipment & Trim Levels
The 545i typically came well-equipped, reflecting its position as a premium model. Standard features included leather upholstery, power-adjustable front seats with memory, automatic climate control, a premium sound system, and xenon headlights. Optional extras included a navigation system, sport seats, a sunroof, and upgraded interior trim. The interior design was modern for its time, with a focus on ergonomics and functionality. The dashboard featured a curved design, and the iDrive infotainment system, while innovative, was often criticized for its complexity.
Chassis & Braking
The E60 5 Series featured a robust chassis with a multi-link rear suspension, contributing to its excellent handling characteristics. The 545i typically came equipped with ventilated disc brakes at the front and solid disc brakes at the rear. ABS (Anti-lock Braking System) was standard, providing enhanced braking performance and stability. The steering was a hydraulic rack-and-pinion system, offering precise and responsive steering feel. The standard tire size was 225/55 R16, providing a good balance between 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 the complexity of the iDrive system and the somewhat controversial styling of the E60. Compared to the 530i, the 545i offered significantly more performance, but at a higher price point. Compared to the 550i, the 545i provided a more balanced driving experience, with less emphasis on outright power. Fuel economy was reasonable for a V8-powered sedan, but not exceptional.
Legacy
The N62 V8 engine, while generally reliable, is known to be susceptible to certain issues, including coolant leaks from the water pump and thermostat housing, and oil leaks from the valve cover gaskets. Regular maintenance and preventative repairs are crucial to ensure the longevity of this engine. Today, the E60 545i represents a compelling value in the used car market, offering a luxurious and capable sedan at an affordable price. However, potential buyers should be aware of the potential maintenance costs associated with a higher-mileage example. The 545i remains a popular choice among BMW enthusiasts who appreciate its blend of performance, luxury, and driving dynamics.
