This is Subaru's first diesel engine – developed in-house using over 40 years' expertise in ‘boxer' engine technology coupled with turbocharging know-how gleaned from the fierce World Rally Championship arena.

The Japanese manufacturer's Boxer Diesel engine will initially only be fitted to European-market cars.

Thoroughly-Developed Package
The new Boxer Diesel Legacy range is a thoroughly-developed model in its own right with several unique features to suit its diesel application.

For example, the engine has liquid mounts, with the body benefiting from extra sound-proofing to enhance refinement, while the five-speed manual gearbox has higher ratios to suit the diesel's stronger torque and lower engine speed.

The power-steering is now electric to improve fuel economy and carefully tuned for strong feel and response. Front spring rates have also been tuned to suit both the diesel engine and new steering system.

The Boxer Diesel's front brakes have also been uprated and the gear-lever length reduced by 10 mm for a sportier, shorter throw.

Even the air-conditioning unit has been modified to provide hot air earlier in the engine's warm-up cycle, diesel engines having different characteristics to petrol powerplants.

Visual changes include new cloth seat trim and a discreet bonnet air intake scoop.

Subaru Boxer Diesel


Boxer Diesel Secrets Explained

* Exceptionally compact, light and strong
* Low friction balance cancels out vibration
* Flat four's low centre-of-gravity boosts handling agility
* Punchy throttle response
* Common-rail fuel-injection for greater efficiency
* Solenoid injectors for compactness
* Variable-vane turbocharger mounted under engine for low centre-of-gravity
* Highly efficient, fast-warm catalytic converter also mounted under engine

Dedicated to the horizontally-opposed ‘boxer' engine layout for over 40 years, Subaru engineers were determined to use this format for their first diesel engine.

The reasons were to create a light, compact, strong unit with reduced vibration, noise and internal friction compared to an in-line engine and for an ultra-low centre-of gravity.

This enhances handling agility and roadholding – especially when combined with Subaru's renowned symmetrical all-wheel drive system.

In fact, the entire engine and transmission are not only mounted very low down but also within the wheelbase which further boosts chassis dynamics.

Cancelled Out Vibration
The 2.0 litre Boxer Diesel has a class-leading light weight with the horizontally-opposed pistons effectively cancelling out the secondary harmonic vibration (vibration with twice the frequencies of the engine speed).

The crankshaft is short and highly rigid, minimising the vibrational noise of many diesel engines.

And the superior balance of the horizontally-opposed engine means internal rotational inertia and friction are drastically reduced compared with an in-line engine.

Reduced internal friction means throttle response is exceptionally lively and in keeping with Subaru's sporty heritage.

Compared to Subaru's 2.0 litre engine fitted to the Impreza, Legacy and Forester, the 2.0 litre Boxer Diesel has a 11 mm longer stroke and 6 mm smaller bore for a capacity of 1,998 cc versus 1,994 cc.

Even More Compact
Thanks to a bore pitch shortened from 113 mm to 98.4 mm, the overall engine block length is only 353.5 mm compared to the petrol's already compact 414.8 mm.

The block is of a rigid semi-closed deck design, while all five main bearings in the alloy cylinder block use metal composite supports for added strength and durability. It also enhances refinement, providing a similar thermal expansion to that of the crankshaft.

Extra water-cooling slits have been added between the cylinder bores and the high-strength pistons are squirted with oil to enhance cooling. The large ends of the connecting rods feature an asymmetrical profile for assembly precision and reduced friction.

The high-strength crankshaft has a special surface treatment to withstand the diesel engine's high combustion pressures while the uprated cylinder heads have roller rocker arms. In addition, the cam-drive is via a chain system that better handles the variations in torque of a diesel engine.

Advanced Fuel-Injection and Turbocharger
The new Boxer Diesel uses an advanced common-rail fuel-injection system with the fuel being pressurised at 180 MPa before being fed into the common rail. This maximises efficiency, both in terms of power, fuel consumption and emissions.

Special, short-length solenoid injectors ensure the engine's width is no greater than that of the 2.0 litre petrol unit, despite the diesel's longer piston stroke.

The variable nozzle turbocharger ensures the correct boost throughout the engine's rev-range and its low centre-of gravity position under the engine and close to the catalytic converters increases environmental performance.

The New Diesel meets Euro4 emission standards thanks to oxidation catalytic converters, a particulate filter and exhaust gas recirculation. It is the most environmentally-friendly vehicle in the AWD passenger car class.

The New Diesel range is now in all authorised Subaru Dealerships throughout the Country.

Retail Prices
Legacy 2.0TD Saloon: €29,995
Sports Tourer: €32,795
Outback: €38,495
(Incl. VAT & VRT excluding dealer related charges)

Item

TURBO BOXER DIESEL LEGACY & OUTBACK:
SPECIFICATIONS

SALOON

SPORTS TOURER

OUTBACK

2.0D

5MT

ENGINE
Type

Horizontally-Opposed, 4-cylinder, 4-stroke, turbocharged, diesel engine

DOHC 16-valve

Bore/Stroke (mm)

86.0 X 86.0

Capacity (cc)

1,998

Compression ratio

16.3

Fuel system

Common rail system

Fuel tank capacity (lit.)

64

PERFORMANCE SALOON SPORTS TOURER OUTBACK

Max. output (DIN)(kW(PS)/rpm)

110(150)/3,600

Max. torque (DIN)(Nm(kgfm)/rpm)

350(35.7)/1,800

Max. speed (in top gear) (km/h)

208

203

200

Acceleration (0-100 km/h)(sec.)

8.7

8.9

9.2

Fuel consumption* Urban (lit./100 km)

7.0

7.1(7.2)

7.1(7.2)

Extra-urban (lit./100 km)

4.8

5.0(5.1)

5.1(5.2)

Combined (lit./100 km)

5.6

5.7(5.8)

5.8(5.9)

CO2 emissions* Urban (g/km)

184

186(189)

186(189)

Extra-urban (g/km)

128

131(134)

135(137)

Combined (g/km)

148

151(154)

153(156)

DRIVETRAIN
AWD type

Centre differential gear coupled with viscous LSD

Torque split ratio (front/rear)

50/50

DIMENSIONS & WEIGHT
Overall length (mm)

4,665

4,720

4,730

Overall width (mm)

1,730

1,730

1,770

Overall height (mm)

1,425

1,470

1,545

Wheelbase (mm)

2,670

Track Front (mm)

1,495

Rear (mm)

1,490

1,485

1,485

Minimum road clearance (at kerb weight)(mm)

145

145

195

Seating capacity (persons)

5

Kerb weight (kg)

1,460

1,510(1,565)

1,505(1,570)

Towing capacity (kg)

1,700

TRANS-AXLE
Gear ratio 1st

3.454

3.454

3.454

2nd

1.750

1.750

1.750

3rd

1.096

1.096

1.096

4th

0.785

0.785

0.785

5th

0.634

0.634

0.634

Reverse

3.333

3.333

3.333

Final drive axle ratio

3.700

3.700

3.900

CHASSIS
Steering

Electric pinion assist type

Suspension (4-wheel
independent)
Front

MacPherson strut type

Rear

Multi-link type

Minimum turning circle at tyre (radius)(m)

5.4

Brakes Front

Ventilated disc brakes

Rear

Disc brakes

ABS

4-sensor/4-channel type with Electronic Brake-force Distribution

E&OE.

Features and Equipment for the all new Turbo Boxer Diesel Legacy Saloon,
Sports Tourer and Outback

Standard Equipment

Saloon

Sports Tourer

Outback

Cruise Control

S

S

S

Side Airbag

S

S

S

Front Fog Lamps

S

S

S

Leather Gear Knob & Steering Wheel

S

S

S

Alloy Wheels

17"

17"

17"

6CD player

S

S

S

Electric Foldable Door Mirrors

S

S

S

Dual zone A/C

S

S

S

Telescopic Steering

S

S

S

Wiper De-Icer

S

S

S

Heated Seats

S

S

S

VDC

S

S

S

Symmetrical AWD

S

S

S

HID & Headlamp Washer

S

S

S

Curtain Airbags

S

S

S

Self Leveliser

S

Leather Seats

S

8way Power Seat

S

S

8way Power Seat With Memory

S

Colours for 08MY Legacy / Outback Diesel
Diamond Grey Metallic
Obsidian Black Pearl
Regal Blue Pearl (Legacy only)
Steel Silver Metallic
Topaz Gold Metallic

Generous Warranty
All models marketed by Subaru Ireland come with the reassurance of a three year or 160,000 kilometres warranty, plus twelve year anti-corrosion cover and three year paintwork warranty.
This is in addition to three year's membership of Subaru Assist – a comprehensive home and roadside repair and recovery package throughout Ireland and Europe wwwinistered by Mapfre Asistencia.