BMW has officially introduced the all-new 4-Series Convertible which will be shown to the public next month at Los Angeles Auto Show.

Looking exactly as you would expect, the first-ever 4-Series Convertible adopts a three-piece retractable hardtop boasting a sound-absorbing headliner which reduces wind noise by up to 2 dB in comparison to what the defunct 3-Series Convertible had.

By a simple push of a button the car morphs into a coupe and vice versa in 20 seconds at speeds of up to 11 mph (18 km/h). BMW has equipped the 4-Series Convertible with three-temperature neck warmers which will allow you to drive the car with the top down even at lower temperatures without getting too cold.

Since we are talking about a convertible, cargo area is a delicate subject but BMW says it has increased by 20 liters (0.7 cu. ft.) compared to its predecessor, providing 370 liters (13 cu. ft.) with the top up. Fold it down and you get 220 liters (7.8 cu. ft.) which should be enough for short trips. When the roof is up the car has a drag coefficient of 0.28 while in cabrio mode it increases to 0.33.

In the United States it will be offered as a 428i model powered by a 4-cylinder, 2.0-liter turbocharged engine producing 240 bhp (179 kW) and 255 lb-ft (345 Nm) which is enough for a 0-60 mph (0-96 km/h) run in 6.2 seconds before hitting an electronically-capped top speed of 155 mph (250 km/h). Opt for the 435i and you get a larger 3.0-liter inline-six motor churning 300 bhp (224 kW) and 300 lb-ft (406 kW) capable of propelling the car to 60 mph in 5.5 seconds en route to the same limited top speed.

These engines will be connected exclusively to an eight-speed automatic gearbox providing Normal and Sport transmission modes, while the 428i model can be optionally configured with an xDrive all-wheel drive arrangement.

European customers also get a 420d model equipped with a 4-cylinder, 2.0-liter turbodiesel rated at 181 bhp (135 kW). The Euro-spec 4-Series comes as standard with a six-speed manual transmission but can be optionally mated to the aforementioned 8-speed auto.

As far as trim levels are concerned, BMW will be offering the 4-Series Convertible in United States in Sport, Luxury and M Sport, while Europeans will also get Modern.

The BMW 4-Series Convertible is scheduled to reach U.S. dealerships in the first quarter of 2014 at a starting price of 49,675 USD for the 428i and 55,825 USD for the 435i.

Further details can be accessed from the press release area.

Gallery: 2014 BMW 4-Series Convertible introduced, starts at 49,675 USD

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