Impreza wait worthwhile
WHILE Subaru has added its Boxer diesel engine to its fourth model in Europe, Australia has to wait until November for its diesel model.
The Impreza has just joined the European diesel line-up of Legacy, Outback and Forester.
Subaru Australia national corporate affairs manager David Rowley says there has been no hold up on the diesel.
‘‘We flagged last year that the newgeneration Outback diesel would arrive later this year and that’s still the plan,’’ he says.
The Outback 2.0D will go on sale in early next month.
‘‘We’ll evaluate the level of customer interest and then make a decision on other cars in the rage, with Forester being the next most likely candidate, but not before well into next year,’’ he says.
The 2.0-litre Boxer diesel engine in the Impreza is claimed to achieve fuel economy of 5.9L/100km with CO2 emissions of 155g/km which is 20g less than a Corolla.
It’s no slouch either with 112kW of power and 350Nm of torque between 1800 and 240 revs, propelling it to 100km/h in nine seconds and a top speed of more than 200km/h.
The horizontally opposed fourcylinder engine sits flat and deep in the engine well with a variable geometry turbocharger and catalytic con- verter mounted underneath for a low centre of gravity.
Coupled with symmetrical all-wheel drive, this improves handling and traction.
Subaru claims the flat-four layout with horizontally-opposed pistons cancels out second harmonic vibration which means there is no need for heavy balancer shafts.
Apart from reduced diesel noise, it also ensures a lively throttle response.
The 1998cc Boxer diesel has an 11mm longer stroke and 6mm smaller bore than the 1994cc petrol engine.
Cylinder bore spacing is reduced so the engine block is 61.3mm shorter at 353.5mm.
It uses a common-rail fuel-injection system with fuel pressurised at 180MPa.
The variable nozzle turbocharger ensures the correct boost at all engine speeds and placing it beneath the engine contributes to the Impreza’s low centre of gravity, where it also connects directly to the catalytic converters, boosting environmental performance.