The Subaru Legacy IV facelift, produced from 2006 to 2009, represented a significant evolution of Subaru’s mid-size sedan. Within this generation, the 3.0R spec.B variant, equipped with a 3.0-liter boxer engine and a five-speed automatic transmission, occupied the performance-oriented top tier. This model aimed to deliver a blend of all-weather capability, sporty handling, and refined comfort, appealing to buyers seeking a more engaging driving experience than the standard Legacy trims. The “spec.B” designation signified a higher level of equipment and performance enhancements compared to the base 3.0R models.
Technical Specifications
| Brand | Subaru |
| Model | Legacy |
| Generation | Legacy IV (facelift 2006) |
| Type | 3.0R spec.B (245 Hp) AWD Automatic |
| Start of production | 2006 |
| End of production | 2009 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 13.8 l/100 km (17 US mpg, 20.5 UK mpg, 7.2 km/l) |
| Fuel consumption (extra urban) | 7.4 l/100 km (31.8 US mpg, 38.2 UK mpg, 13.5 km/l) |
| Fuel consumption (combined) | 9.8 l/100 km (24 US mpg, 28.8 UK mpg, 10.2 km/l) |
| CO2 emissions | 231 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 8.2 sec |
| Acceleration 0 – 62 mph | 8.2 sec |
| Acceleration 0 – 60 mph | 7.8 sec |
| Maximum speed | 237 km/h (147.26 mph) |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 6.6 kg/Hp, 151.2 Hp/tonne |
| Weight-to-torque ratio | 5.5 kg/Nm, 183.3 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 | 7.3 l (7.71 US qt | 6.42 UK qt) |
| Kerb Weight | 1620 kg (3571.49 lbs.) |
| Max. weight | 2030 kg (4475.38 lbs.) |
| Max load | 410 kg (903.9 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 (12%) | 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 (Back) track | 1485 mm (58.46 in.) |
| Ride height (ground clearance) | 155 mm (6.1 in.) |
| Minimum turning circle (turning diameter) | 11.6 m (38.06 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 5 gears, automatic 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, was chosen for its inherent balance and smooth power delivery. The EZ30D featured multi-port fuel injection and a double overhead camshaft (DOHC) valvetrain. The engine produced 245 horsepower at 6,600 rpm and 297 Nm (219 lb-ft) of torque at 4,200 rpm. The five-speed automatic transmission was specifically tuned for the higher output of the 3.0R, offering smoother shifts and more responsive downshifts compared to the transmissions paired with the 2.5-liter engines. While not a cutting-edge transmission by modern standards, it was considered reliable and well-matched to the engine’s characteristics.
Driving Characteristics
The 3.0R spec.B offered a noticeable performance upgrade over the lower-trim Legacy models. The combination of the 3.0-liter engine and the automatic transmission resulted in a 0-60 mph time of around 7.8 seconds and a top speed of 147 mph. While the automatic transmission didn’t provide the same level of driver engagement as the available five-speed manual, it offered a more relaxed driving experience, particularly in city traffic. The all-wheel-drive system provided excellent traction in all weather conditions, a key selling point for Subaru. The spec.B trim also included a slightly stiffer suspension setup, which improved handling and reduced body roll compared to the standard 3.0R.
Equipment & Trim Levels
The “spec.B” trim level signified a premium offering within the Legacy lineup. Standard features included leather upholstery, heated front seats, a premium audio system, and unique alloy wheels. Optional extras often included a sunroof, navigation system, and upgraded interior trim. The spec.B also featured subtle exterior styling cues, such as a unique front grille and rear spoiler, to differentiate it from other Legacy models. The interior generally featured dark woodgrain accents and a more refined overall aesthetic.
Chassis & Braking
The Legacy IV utilized a MacPherson strut front suspension and a multi-link rear suspension. The spec.B trim featured slightly stiffer springs and dampers compared to the standard models, enhancing handling and stability. Braking duties were handled by ventilated discs at the front and solid discs at the rear. Anti-lock brakes (ABS) were standard equipment. The chassis was designed to provide a comfortable ride while maintaining a reasonable level of handling precision. The all-wheel-drive system employed a symmetrical design, distributing power evenly to all four wheels for optimal traction.
Market Reception & Comparison
The 3.0R spec.B was generally well-received by automotive critics. It was praised for its smooth engine, comfortable ride, and all-weather capability. However, some reviewers noted that the automatic transmission could feel slightly sluggish compared to the manual option. Compared to the 2.5i models, the 3.0R spec.B offered significantly more power and a more refined driving experience, but at a higher price point. Fuel economy was also lower than the four-cylinder models. Against competitors like the Honda Accord and Toyota Camry, the Legacy 3.0R spec.B offered a unique combination of performance and all-wheel-drive capability.
Legacy
The EZ30D engine, while generally reliable, is known to be susceptible to head gasket failures, a common issue with earlier Subaru boxer engines. Regular maintenance, including timely coolant changes, is crucial to prevent this issue. The five-speed automatic transmission is also generally durable, but may require servicing at higher mileage. Today, the 2006-2009 Legacy 3.0R spec.B holds a niche appeal among Subaru enthusiasts who appreciate its unique blend of performance, practicality, and all-weather capability. Well-maintained examples command a premium in the used car market, and the model is increasingly recognized as a desirable classic Subaru.
