Alfa Romeo unveiled the Giulia about a month ago but that hasn't stopped the automaker from continuing to test their upcoming sedan.

Alfa Romeo unveiled the Giulia about a month ago but that hasn't stopped the automaker from continuing to test their upcoming sedan.

Believed to be a prototype for a mainstream variant, this particular Giulia has a Quadrifoglio front fascia but eschews the ventilated hood, front fender vents and aerodynamic side skirts.  The rear skirt is also missing and reveals this prototype has a dual exhaust system.

Alfa Romeo has been tight-lipped about the non-Quadrifoglio variants but previous reports have suggested the standard Giulia will be unveiled at either the North American International Auto Show or the Geneva Motor Show. Engine options also remain unconfirmed but speculation suggests there could be a turbocharged 2.0-liter petrol, a 2.2-liter diesel and a 3.0-liter six-cylinder turbodiesel with approximately 340 PS (250 kW).

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