The Giulietta gains Alfa Romeo's new double-clutch TCT transmission, which will be offered on the 1.4-litre turbocharged MultiAir petrol engine and the 2.0-litre turbo diesel, both of which produces 170bhp.

Alfa Romeo claims that the TCT transmission reduces fuel consumption and emissions, but without sacrificing performance. The Giulietta 1.4 MultiAir with TCT is able to go from 0-100km/h in 7.7 seconds, while the Giulietta 2.0 JTDM allows the car to sprint from 0-100km/h in 7.9 seconds.

The smaller MiTo hatchback, meanwhile, receives an all-new 0.9-litre turbocharged TwinAir engine that was first seen in the Fiat 500, and won the "International Engine of the Year 2011" award. The two-cylinder powerplant produces 85bhp and between 110 to 145Nm of torque, depending on the mapping. Alfa Romeo says that the MultiAir technology and auto Stop-Start system allows for a 30% reduction in fuel consumption in the MiTo, but without a compromise in performance.

Other updates to the MiTo hatchback include a new “Nero Ametista” body colour along with new-design alloy wheels and a two-tone black dashboard and mesh seat trim. Additionally, Alfa Romeo will also soon offer a new 1.3-litre JTDM turbo diesel engine with 85bhp, variable turbocharger technology and Start-Stop as standard for the MiTo.