BMW has announced details of the third M3 derivative, the new BMW M3 convertible. The fourth generation of BMW's open-topped M3 becomes the first M car to feature a retractable hard-top.
The new M3 convertible also represents another first with the introduction of BMW's new seven-speed M double clutch transmission as an option to the standard six-speed manual gearbox.
The new M3 convertible's engine develops more than twice the power of the original, delivering 420hp at 8,300 rpm and 400Nm of torque at 3,900 rpm from its 3,999cc V8-power unit. Like the previous three generations, the engine in the new M3 convertible easily breaks through the 100hp per litre barrier, offering 105hp per litre.
The V8 engine powers the car from zero to 62mph in 5.3 seconds and on to an electronically-limited top speed of 155 mph. However, even with these supercar levels of performance, BMW's EfficientDynamics programme ensures that economy is not compromised with the car delivering 21.9 mpg on the combined cycle.
In standard specification, power is transferred to the road by BMW M's six-speed manual gearbox and variable M differential. This conveys up to 100 per cent of available power to the wheel with most grip.
The BMW M3 convertible is the first M3 to feature an electro-hydraulic retractable hard-top as standard. It's also the first M3 to feature BMW's innovative sun reflective leather technology, allowing the driver to leave the roof down for prolonged periods without the seat leather overheating.
The M3 convertible combines the elegance of the 'standard' 3 Series convertible with the athleticism of the M3 Coupé. A striking powerdome and two air intakes in the aluminium bonnet cover the new V8 engine and help engine cooling. Primarily, the design of the front of the car is defined by the significant volumes of air required for the induction system. As a result, three large air ducts in the front lower apron keep the engine breathing.
The flared wheel arches house the standard 18-inch double-spoke light-alloy wheels, with a striking 19-inch wheel available as an option. Another BMW M trait, a side gill in the front wing, also includes the side direction indicator and the M3 logo.