The Subaru Legacy IV 3.0i spec.B, produced between 2004 and 2006, represented the performance pinnacle of the fourth-generation Legacy (BE/BH chassis). Positioned as the flagship trim, the spec.B offered a potent combination of Subaru’s symmetrical all-wheel drive, a naturally aspirated 3.0-liter boxer engine, and a six-speed manual transmission – a configuration aimed at enthusiasts seeking a sporty and capable sedan. It was primarily marketed in Japan and Australia, with limited availability in other markets, and distinguished itself from the more mainstream Legacy models with its enhanced handling and performance credentials. The Legacy IV itself was a significant evolution of the model, building upon the success of previous generations with improved refinement, safety features, and a more modern design.
Technical Specifications
| Brand | Subaru |
| Model | Legacy |
| Generation | Legacy IV |
| Type | 3.0i spec.B (245 Hp) AWD |
| Start of production | 2004 |
| End of production | 2006 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 17.7 l/100 km (13.3 US mpg, 16 UK mpg, 5.6 km/l) |
| Fuel consumption (extra urban) | 8.9 l/100 km (26.4 US mpg, 31.7 UK mpg, 11.2 km/l) |
| Fuel consumption (combined) | 12.1 l/100 km (19.4 US mpg, 23.3 UK mpg, 8.3 km/l) |
| CO2 emissions | 286 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6.9 sec |
| Acceleration 0 – 62 mph | 6.9 sec |
| Acceleration 0 – 60 mph | 6.6 sec |
| Maximum speed | 243 km/h (150.99 mph) |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 6.5 kg/Hp, 154.1 Hp/tonne |
| Weight-to-torque ratio | 5.4 kg/Nm, 186.8 Nm/tonne |
| Power | 245 Hp @ 6600 rpm |
| Power per litre | 81.7 Hp/l |
| Torque | 297 Nm @ 4200 rpm (219.06 lb.-ft. @ 4200 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | EZ30D |
| Engine displacement | 2999 cm3 (183.01 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Boxer |
| Cylinder Bore | 89.2 mm (3.51 in.) |
| Piston Stroke | 80 mm (3.15 in.) |
| Compression ratio | 10.7:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 5.3 l (5.6 US qt | 4.66 UK qt) |
| Coolant | 7.9 l (8.35 US qt | 6.95 UK qt) |
| Kerb Weight | 1590 kg (3505.35 lbs.) |
| Max. weight | 2030 kg (4475.38 lbs.) |
| Max load | 440 kg (970.03 lbs.) |
| Trunk (boot) space (minimum) | 433 l (15.29 cu. ft.) |
| Fuel tank capacity | 64 l (16.91 US gal | 14.08 UK gal) |
| Max. roof load | 80 kg (176.37 lbs.) |
| Permitted trailer load (with brakes) | 2000 kg (4409.25 lbs.) |
| Permitted trailer load (without brakes) | 750 kg (1653.47 lbs.) |
| Length | 4665 mm (183.66 in.) |
| Width | 1730 mm (68.11 in.) |
| Height | 1425 mm (56.1 in.) |
| Wheelbase | 2670 mm (105.12 in.) |
| Front track | 1495 mm (58.86 in.) |
| Rear track | 1490 mm (58.66 in.) |
| Ride height (ground clearance) | 155 mm (6.1 in.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears | 6 |
| Gearbox type | Manual transmission |
| 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 | 215/45 R18ZR |
| Wheel rims size | 18 |
Powertrain & Engine Architecture
The heart of the 3.0i spec.B is the EZ30D engine, a 2,999 cc (183.01 cu. in.) 24-valve DOHC naturally aspirated boxer-6. The boxer configuration, where cylinders are horizontally opposed, provides a low center of gravity, contributing to the car’s balanced handling. The EZ30D featured multi-port fuel injection and a compression ratio of 10.7:1. This engine produced 245 horsepower at 6,600 rpm and 297 Nm (219.06 lb.-ft.) of torque at 4,200 rpm. The six-speed manual transmission was a key differentiator for the spec.B, offering precise gear changes and allowing the driver to fully exploit the engine’s power. Unlike some other Legacy variants that offered automatic transmissions, the spec.B was exclusively available with the manual.
Driving Characteristics
The 3.0i spec.B delivered a noticeably more engaging driving experience than other Legacy models. The combination of the potent engine, manual transmission, and symmetrical all-wheel drive resulted in brisk acceleration – 0 to 60 mph in approximately 6.6 seconds – and confident handling in all weather conditions. The all-wheel-drive system provided excellent traction, while the manual transmission allowed for precise control over the engine’s power band. Compared to the 2.5-liter naturally aspirated or turbocharged Legacy models, the 3.0i spec.B offered significantly more power and torque, resulting in stronger acceleration and a more responsive feel. While the automatic transmission options in other Legacy trims prioritized comfort and convenience, the spec.B’s manual gearbox catered to drivers who valued performance and control.
Equipment & Trim Levels
The spec.B trim level was generously equipped. Standard features typically included sport seats with enhanced bolstering, a leather-wrapped steering wheel and shift knob, alloy wheels, and a premium audio system. The interior often featured unique trim accents and badging to distinguish it from other Legacy models. Optional extras could include a sunroof, navigation system, and upgraded sound systems. The focus was on providing a sporty and refined interior environment that complemented the car’s performance capabilities.
Chassis & Braking
The Legacy IV 3.0i spec.B featured a robust chassis designed to handle the increased power and performance. The suspension utilized spring struts at the front and coil springs at the rear. Braking duties were handled by ventilated discs at the front and solid discs at the rear, equipped with an Anti-lock Braking System (ABS) for enhanced safety. The suspension was tuned for a balance between comfort and handling, providing a firm but controlled ride. The all-wheel-drive system distributed power to all four wheels, maximizing traction and stability.
Market Reception & Comparison
The 3.0i spec.B was generally well-received by automotive critics, who praised its performance, handling, and overall refinement. It was often compared favorably to other sporty sedans of the time, such as the Subaru WRX and Mitsubishi Lancer Evolution, although it offered a more comfortable and refined driving experience. Fuel economy, however, was a common criticism, with the 3.0-liter engine consuming a significant amount of fuel, particularly in urban driving. Compared to the more economical 2.5-liter Legacy models, the spec.B represented a premium option for buyers who prioritized performance over fuel efficiency.
Legacy
The Subaru Legacy IV 3.0i spec.B has developed a cult following among Subaru enthusiasts. The EZ30D engine, while not without its maintenance requirements, is generally considered a durable and reliable powerplant when properly maintained. The six-speed manual transmission is also highly regarded for its smooth operation and precise shifts. Today, well-maintained examples of the 3.0i spec.B are sought after by collectors and enthusiasts, and command a premium in the used car market. Its combination of performance, all-wheel-drive capability, and relative rarity has cemented its place as a desirable and iconic Subaru model.
