The Infiniti Q70 sedan is set to gain a new 2.2-litre turbo diesel engine sourced from Mercedes-Benz.
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The new four-cylinder diesel unit produces 125kW of power and 400Nm of torque, with the latter available between 1600 and 2800rpm "for brisk acceleration and pulling power". The same diesel engine has been seen in the smaller Q50 range, with the same outputs.

The current Q70 range consists of three powertrains - a 3.0-litre turbo diesel with 175kW and 550Nm, a 3.7-litre petrol with 235kW and 360Nm, and a 3.5-litre V6 hybrid drivetrain. Fuel use for the new model is not yet confirmed, but it is expected to better that seen in the V6 (which uses 7.5 litres per 100 kilometres).

Infiniti Q70_3

Infiniti Australia has confirmed it is looking into offering the new four-cylinder diesel engine locally.

Should the four-cylinder be offered, it will likely open the Q70 range. The current models are priced from $75,900 for the petrol, $77,900 for the diesel and $90,400 for the hybrid.

Infiniti unveiled the updated Q70 range at the 2014 New York auto show earlier this year, with a new long-wheelbase variant headlining proceedings. That variant, however, has been ruled out for Australia.

Stay tuned for more details on the facelifted Q70 range, which is expected to arrive in the second or third quarter of 2015.