The Subaru Legacy IV (facelift, introduced in 2006) 3.0R spec.B represents the pinnacle of performance for the fourth-generation Legacy sedan. Produced from 2006 to 2009, this variant was positioned as the flagship model, offering a potent combination of all-wheel drive, a naturally aspirated six-cylinder engine, and a sporty suspension setup. It catered to drivers seeking a refined yet engaging driving experience, differentiating itself from the more economical four-cylinder options available in the Legacy lineup. The “spec.B” designation signified a higher level of equipment and performance tuning compared to the standard 3.0R model.
Technical Specifications
| Brand | Subaru |
| Model | Legacy |
| Generation | Legacy IV (facelift 2006) |
| Type | 3.0R spec.B (245 Hp) AWD |
| Start of production | 2006 |
| End of production | 2009 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 17.6 l/100 km (13.4 US mpg, 16.1 UK mpg, 5.7 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 | 6.6 kg/Hp, 152.2 Hp/tonne |
| Weight-to-torque ratio | 5.4 kg/Nm, 184.5 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 | 3000 cm3 (183.07 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 | 5.5 l (5.81 US qt, 4.84 UK qt) |
| Coolant capacity | 7.4 l (7.82 US qt, 6.51 UK qt) |
| Kerb Weight | 1610 kg (3549.44 lbs.) |
| Max. weight | 2030 kg (4475.38 lbs.) |
| Max load | 420 kg (925.94 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.) |
| Permitted towbar download | 82 kg (180.78 lbs.) |
| Length | 4730 mm (186.22 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 | 1485 mm (58.46 in.) |
| Ride height (ground clearance) | 155 mm (6.1 in.) |
| Minimum turning circle | 11.6 m (38.06 ft.) |
| 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 R17 |
| Wheel rims size | 7.0J x 17 |
Powertrain & Engine Architecture
The heart of the 3.0R spec.B is the EZ30D 3.0-liter horizontally opposed (Boxer) six-cylinder engine. This engine, a hallmark of Subaru engineering, features a symmetrical layout designed to minimize vibration and enhance balance. The EZ30D utilizes multi-port fuel injection and a dual overhead camshaft (DOHC) valvetrain with four valves per cylinder. The engine produces 245 horsepower at 6,600 rpm and 297 Nm (219 lb-ft) of torque at 4,200 rpm. The spec.B model exclusively came with a six-speed manual transmission, providing drivers with precise control over the engine’s power delivery. This transmission was chosen to complement the engine’s performance characteristics and appeal to enthusiasts. The engine’s longitudinal mounting and the symmetrical all-wheel-drive system contribute to the car’s balanced handling.
Driving Characteristics
The 3.0R spec.B delivers a noticeably more engaging driving experience than the base Legacy models. The six-speed manual transmission allows for spirited acceleration and precise gear selection. The Boxer engine provides a unique sound and smooth power delivery. While not as overtly powerful as some turbocharged competitors, the EZ30D offers a broad torque curve, making it responsive in everyday driving situations. The all-wheel-drive system provides excellent traction in various weather conditions. The suspension, tuned for performance, offers a firmer ride than the standard Legacy, reducing body roll and enhancing cornering stability. The gear ratios are optimized for both acceleration and highway cruising, providing a balance between performance and fuel efficiency.
Equipment & Trim Levels
The “spec.B” trim level included a number of features designed to enhance both comfort and performance. Standard equipment typically included leather upholstery, sport seats with enhanced bolstering, a premium audio system, automatic climate control, and alloy wheels. The spec.B also featured unique exterior styling cues, such as a sportier front bumper and rear spoiler. Optional extras could include a sunroof, navigation system, and upgraded sound system. The interior was generally well-appointed, with a focus on providing a comfortable and refined driving environment.
Chassis & Braking
The Legacy IV’s chassis was designed to provide a balance between comfort and handling. The spec.B model featured a stiffer suspension setup compared to other trims, with upgraded shock absorbers and springs. The front suspension utilized MacPherson struts, while the rear employed a double-wishbone configuration. Braking duties were handled by ventilated disc brakes at all four corners, providing ample stopping power. An Anti-lock Braking System (ABS) was standard equipment. The car’s all-wheel-drive system distributes power to all four wheels, enhancing traction and stability.
Market Reception & Comparison
The Subaru Legacy 3.0R spec.B was generally well-received by automotive critics, who praised its performance, handling, and all-wheel-drive system. However, its fuel economy was often cited as a drawback, particularly compared to four-cylinder competitors. Compared to the standard 3.0R model, the spec.B offered a more engaging driving experience thanks to its manual transmission and sport-tuned suspension. It also provided a more premium interior and unique styling cues. Compared to other mid-size sedans of the time, the Legacy 3.0R spec.B offered a unique combination of performance, practicality, and all-weather capability.
Legacy
The EZ30D engine, while robust, is known to require regular maintenance, particularly regarding oil changes and timing belt replacements. The all-wheel-drive system is generally reliable, but components such as the viscous coupling may require attention over time. Today, the 2006-2009 Legacy 3.0R spec.B is considered a desirable used car among Subaru enthusiasts. Its combination of performance, practicality, and rarity has helped it maintain a relatively strong value in the used car market. Well-maintained examples are sought after by those looking for a unique and engaging driving experience.
