2014 F33 BMW 4-Series convertible drops its top officially

If you were expecting any huge changes, apart from the addition of a folding steel roof, from F32 BMW 4-Series, we have two things to say to you. 1) Really? 2) No, seriously, really?


The electric folding steel roof of the new 4-Series folds up or down in 20 seconds. BMW claims that interior noise has been reduced by two decibels from the outgoing 3-Series convertible thanks to greater use of sound absorbing material. Boot space is rated at 370 litres with the roof up (up 30 litres on the previous model) and 220 litres with the roof down. The roof can be lowered at speeds up to 18km/h.

When the 4-Series convertible launches it will be offered with three engine choices: one diesel and two petrol. Europeans will likely go for the 135kW/380Nm 2-litre 4-cylinder turbo-diesel branded as the 420d, while the rest of the world will likely favour either the 180kW/350Nm 2-litre 4-cylinder turbocharged 428i petrol or 225kW/400Nm 3-litre 6-cylinder turbocharged 435i petrol.

Power in all models will go to the rear wheels either via a 6-speed manual or 8-speed automatic; expect only the automatic to surface in Australia. All 4-Series convertibles will be fitted with automatic engine stop/start to improve fuel economy. In the second quarter of 2014 all-wheel drive — xDrive in BMW-speak — will be offered in the 428i convertible. It’s unlikely we’ll ever see the all-wheel drive convertible in Australia.

Tech available on the 4-Series convertible will stretch to concealed roll over bars that pop up in less than 200 milliseconds, full colour head-up display, lane departure warning, blind-spot monitoring, surround view cameras, parking sensors and cameras, attention monitoring, LED headlights with automatic high beams, adaptive cruise control that can work in stop/start traffic.

A new navigation system includes internet-relayed real-time traffic information, pre-loaded speed limit information and road sign recognition. Adaptive suspension and sportier tuning are available as part of the M Sport package.

Dimensions, weight

Length: 4,638mm (+26mm)
Height: 1,384mm
Width: 1,825mm
Wheelbase: 2,810mm (+50mm)

Ground clearance: 130mm
Luggage capacity: 220L (roof down) to 370L (roof up)
Drag coefficient (Cd): 0.32 (roof down) to 0.28 (roof up)

Derek Fung

Derek Fung

Derek has a lifelong love for all things automotive, from the dullest Camry to record shattering Bugattis. Prior to starting up Between the Axles he was a reviewer for CNET Australia and the founding editor of its Car Technology channel. [Read more]