Benz's latest-generation rival for the BMW 3 Series is tipped to be revealed at the 2014 Detroit motor show in January before reaching European showrooms mid year, and likely second half for Australia.
The new Mercedes-Benz C-Class will grow in size to create more rear legroom and to distance the company's volume-selling vehicle from the new A-Class hatch-based CLA that is slightly longer than the current C-Class.
Four body styles will eventually be offered, with a wagon (late 2014), a coupe rumoured to bring back the CLK badge (2015), and a convertible (2016) - all helping Mercedes to match the expansive 3 Series line-up.
A hybrid drivetrain and all-wheel drive will also become available globally.
The last-generation C-Class needed a mid-life update to bring a more luxurious feel to its interior, but expect the mid-sized Benz to deliver a suitable cabin from the off this time.
There will also be plenty of technology features cascading down from the bigger E-Class and S-Class.
It's a relatively busy time coming up for the mid-sized luxury segment. A new Lexus IS launches locally in July, and an all-new Audi A4 will also be released in 2014.