2021 BMW 4 Series Convertible pricing and specs confirmed: New soft-top variants incoming for Mercedes-Benz C-Class rival

BMW Australia will release its new 4 Series Convertible early next year, priced from $89,900 plus on-road costs for the base 420i variant.

Mirroring the 4 Series Coupe line-up that launched last month, the Convertible will also be offered in a mid-spec 430i grade, priced from $107,900, while the M440i will top the range from $135,900.

This means that opting for the 4 Series Convertible over its hard-topped sibling comes at a $19,000 premium in the case of the entry-level 420i.

The new BMW 4 Series Convertible uses a ‘panel-bow’ fabric roof, which is said to be 40 per cent lighter than the retractable hard top setup utilised by its predecessor.

The new retractable soft top can be opened or closed at the push of a button in just 18 seconds.

Significantly, the soft-top can be opened or closed within 18 seconds when driving at speeds of up to 50km/h, and allows for increased luggage space from 300 to 385 litres compared to the outgoing model.

Otherwise, the 4 Series Convertible adopts the same design language as seen on the Coupe, highlighted by a large kidney grille that dominates its front end.

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Powering the 4 Series Convertible is two turbo-petrol engines, a 2.0-litre four-cylinder and a 3.0-litre inline six cylinder.

The four-cylinder motivates the 420i and 430i, producing 135kW/300Nm and 190kW/400Nm, respectively, while the grunty 285kW/500Nm six-cylinder engine is reserved for the high-spec M440i.

The high-spec M440i variant features an all-wheel-drive system and a limited-slip differential.

In all cases the BMW 4 Series Convertible features an eight-speed automatic transmission with paddle shifters, however, the sporty M440i is distinguished by an xDrive all-wheel-drive system with a limited-slip differential for enhanced cornering dynamics.

For Australia, BMW offers an M Sport Package as standard on the 4 Series Convertible, adding large front air intakes, Vernasca leather trim on the sports seats and knee pads on the centre console, among other interior touches.

The package also sees lightweight 19-inch wheels as well as a premium audio system.

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M Sport suspension and variable sport steering is also standard, while adaptive M suspension and M Sport brakes come with the 430i and M440i.

Inside, the BMW 4 Series Convertible features a 10.25-inch touchscreen and 12.3-inch digital instrument cluster, with the latest multimedia system now supporting Android Auto and Apple CarPlay.

The car will offered in eight paint finishes, with metallic options adding an extra $2000 to the pricetag.