BMW M4 Convertible 2014BMW has revealed the new M4 Convertible and confirmed the car will made its public debut at the New York International Auto Show later this month.

The new M4 Convertible is powered by the same 431hp 3.0-litre straight-six twin-turbo engine as the regular M4 Coupe and M3 saloon; it’ll hit 62mph from rest in 4.6 seconds instead of the current V8 car’s 5.3-second time.

Choose the optional M DCT paddleshift gearbox (it costs £2,645) and this is cut further, to 4.4 seconds.

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BMW’s been able to improve it by nearly a second courtesy of a 60kg reduction in kerbweight. It still weighs 1,750kg but this looks better on paper than something that tops 1,800kg…

The new M4 Convertible is much more economical too, averaging 31mpg and emitting 213g/km CO2. Again, the M DCT improves this further, to 32.5mpg and 203g/km.

BMW claims the folding hard-top roof is up to 2db quieter and lowers in 20 seconds. For the first time, the new M4 Convertible also offers a three-stage neck-warming Air Collar system. There’s an illuminated M logo in the front head restraints as well, which sounds novel.

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The new BMW M4 Convertible goes on sale in the UK on 6 September, and will be priced from £60,730. Standard kit includes Adaptive M suspension, 19-inch alloys, BMW Professional sat nav, all-round parking sensors and heated front seats.