BMW 4 Series convertible | video

The BMW 4 Series Coupe hits Australian showrooms this month, and we're already getting a good look at the droptop version. BMW has released video and details of the new 4 Series Convertible, which replaces the previous 3 Series equivalent and carries over features like the folding hardtop rather than the soft-top of the 1 Series and larger 6 Series.

For the footage, BMW head of exterior design Domagoj Dukec gives an overview of the subtle changes to the body, and we get our first view of the roof's choreography as it folds into the long-decked boot.

The roof can be lowered at the touch of a button in 20 seconds, at speeds up to 18km/h. A redesigned sound-absorbing headliner drops cabin noise by a claimed 2dB, while a redesigned windblock can now be stored behind the rear seat, and neck warmers are available for front seat occupants for the first time.

What's under the bonnet for Australian variants hasn't been confirmed yet, but will be likely to match the 4 Series coupe line-up. That means a base model 420d powered by a 135kW/380Nm 2.0-litre turbodiesel four; a 428i carrying a 180kW/350Nm 2.0-litre petrol turbo four; and a 435i carrying a 225kW/400Nm 3.0L turbo petrol six.

We've yet to see the price tags, but there will be a premium over the coupe's pricing, which are expected to come in at about $70,000 for the 420d, $85,000 for the 428i and $110,000 for the 435i.

Watch the BMW 4 Series convertible in action here.

This reporter is on Twitter: @KarlaPincott