The model M3 Convertible will feature more than any current BMW retractable hardtop that folds neatly in 22 seconds. The new design, however, combine elements of the recently launched Z4, 5 Series and 7 Series. It will be a little bigger in size but with lower front and back projections and body with a mixture of steel and ultra-lightweight plastic reinforced with carbon fiber.
As far as engines are concerned, the 2014 BMW M3 has seen more than its fair share of rumors.
The more interesting speculation is that the future M3 will be powered by a new 3.3-liter six-cylinder, equipped with three turbos - one powered by electricity, rather than exhaust. Its production will be around 450 bhp (compared to the current output of 420 HP). That rumor was recently murdered and replaced with a new twin-turbo 3.0-liter six-cylinder engine that is currently under development. One source describes the new engine "as very distinct from the company's existing dual turbo 'N54' and twin-scroll turbo 'N55' 3.0-liter engines." Apparently, the new engine will come with a management system, induction system, cylinder heads, pistons and connecting rods.
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