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2021 BMW 4 Series Convertible price and specs

The 2021 BMW 4 Series Convertible will arrive locally in the first quarter of next year, with the entry-level 420i variant priced from $89,900 plus on-road costs.


  • 2021 BMW 4 Series price and specs announced
  • Local examples to arrive in first quarter of 2021
  • Three engines offered locally, with range-topping M440i xDrive producing 285kW/500Nm
  • All Australian models to feature the M Sport package as standard

Alongside the 420i, Australian buyers will also have the choice of the $107,900 plus on-road costs 430i, and the range-topping M440i xDrive priced from $135,900 plus on-road costs.

The new models arrive approximately four months after the 4 Series Coupe touched down in local BMW showrooms.

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At 4768mm, the all-new model is 128mm longer than the outgoing 4 Series, and the wheelbase has been stretched by 41mm.

It is also 27mm wider than its predecessor, at 1852mm.

At the front, the convertible shares its controversial, tall kidney grilles with the coupe, however BMW's Head of Design, Domagoj Dukec, revealed earlier this year the polarising design won't be adopted by other models.

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A new panel-bow soft-top roof – which is approximately 40 per cent lighter than the existing retractable hardtop – can be opened and closed at speeds of up to 50km/h in just 18 seconds.

The new roof also takes up less physical space than the hardtop variant, with the new car gaining 85 litres of boot space, for a total of 385 litres.

A removable wind deflector is fitted as standard.

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The 420i and 430i models both feature 2.0-litre turbocharged four-cylinder petrol engines, delivering 135kW/300Nm and 190kW/400Nm respectively.

Meanwhile, the M440i xDrive picks up a 3.0-litre turbocharged six-cylinder unit producing an impressive 285kW/500Nm.

All three powertrains are paired with an eight-speed torque-converter automatic transmission, paired with wheel-mounted paddle shifters. The 420i and 430i are rear-wheel-drive, while the flagship M440i xDrive sends drive to all four wheels.

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The M Sport package, sports seats, automatic seat belt feeders, Vernasca leather trim, centre console knee pads, front seat heating, 19-inch alloys and a sports steering wheel are all standard on Australian models.

Other standard features include 12.3-inch digital instrument cluster, a 10.25-inch infotainment touchscreen with Apple CarPlay and Android Auto, a large head-up display, wireless phone charging, DAB+ digital radio, LED headlights and tri-zone climate control.

A spate of driver assistance tech – including autonomous emergency braking, lane change warning, lane departure warning, traffic-sign recognition and Reversing Assistant – are also standard-fit.

The 430i adds adaptive suspension, keyless entry, M Sport brakes, a 360-degree camera and the Driving Assistant Professional safety system, which adds adaptive cruise control with stop-and-go and lane-keep assist.

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M440i xDrive models add unique 19-inch alloy wheels, Cerium Grey mirror caps, kidney grilles and exhaust outlets, laser headlights, an M Sport rear differential, ambient LED cabin lighting, steering wheel heating, integrated neck warmers, and a Harman/Kardon surround sound system.

Extended BMW Individual Merino leather trim and BMW Individual full leather trim will be made available at a later date, as an alternative to the standard ‘Vernasca’ leather trim.

Three option packages are on offer.

The $4300 Visibility Package adds ambient lighting and laser headlights, the Comfort Package ($2600 for 420i, $1700 for 430i, as some included features are already standard on the latter) adds a heated steering wheel, adjustable lumbar support and Comfort Access, while the Driver's Assistant Package ($3770, only for 420i) adds tyre pressure monitoring, Driving Assistant Professional safety features, and automatic parking.

Eight paint finishes are available, with Alpine White representing the only no-cost option.

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The metallic line-up – comprising Black Sapphire, Mineral White, Portimao Blue, San Remo Green and Arctic Race Blue – is priced at $2000.

Meanwhile, the premium Dravit Grey metallic and Tanzanite Blue metallic options are priced at $3850 each.

2021 BMW 4 Series Convertible Australian pricing

420i – $89,900

430i – $107,900

M440i xDrive – $135,900

Note: All prices exclude on-road costs.

BMW 420i Convertible equipment highlights:

135kW/300Nm 2.0-litre turbo four-cylinder engine

M Sport Package

19-inch M Light Alloy Wheels

Eight-speed Steptronic Sports transmission with gearshift paddles

M Sport suspension

Electrically-adjustable sports seats for driver and front passenger

Seat memory function for driver

Vernasca leather upholstery

Seat heating for driver and front passenger

Tri-zone automatic air conditioning

Through-loading system

Storage compartment package

Wind deflector

LED headlights with automatic high beams

LED fog lights

Head-up display

Autonomous emergency braking

Reversing Assistant

12.3-inch digital instrument cluster

10.25-inch infotainment display with connected services, Apple CarPlay and Android Auto

Hi-Fi sound system

Wireless smartphone charging

DAB+ digital radio

430i Convertible adds (over 420i)

190kW/400Nm 2.0-litre turbo four-cylinder engine

Adaptive M suspension

Keyless entry

M Sport brakes

Adaptive cruise control

Lane-keep assist

Automatic parking

360-degree camera

M440i xDrive adds (over 430i)

285kW/500Nm 3.0-litre turbocharged inline-six engine

xDrive all-wheel-drive

19-inch '792 M Bicolour' alloy wheels

Performance tyres

Mirror caps in Cerium Grey

Kidney grilles in Cerium Grey

Exhaust outlets in Cerium Grey

M Sport rear differential 

'Galvanic touches' for controls

Ambient cabin lighting

'Air Collar' neck warmers

Adjustable lumbar support

'BMW Laserlight' laser headlights

Harman/Kardon surround sound system 

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William Davis

William Davis has written for Drive since July 2020, covering news and current affairs in the automotive industry. He has maintained a primary focus on industry trends, autonomous technology, electric vehicle regulations, and local environmental policy. As the newest addition to the Drive team, William was brought onboard for his attention to detail, writing skills, and strong work ethic. Despite writing for a diverse range of outlets – including the Australian Financial Review, Robb Report, and Property Observer – since completing his media degree at Macquarie University, William has always had a passion for cars.

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