L.A. Auto Show LIVE: BMW 4 Series Convertible image

After it was consistently spied and leaked on numerous occasions, BMW unveiled it a month ago and now it is finally time for the official introduction of the brand new 4 Series convertible, which occurred during the LA show (and Tokyo as well).

As we all know, the 4 Series takes a further step the design language introduced with the normal 3 Series, this time though enhancing the dynamic side of things. Just like it was the case with the coupe, the Convertible is also bigger than its predecessor, while keeping the same hardtop configuration for the roof.

The three-piece retractable hardtop boasts a sound-absorbing headliner, which reduces wind noise by up to 2 dB in comparison to the old 3-Series Convertible. The car can be transformed from coupe into a cabrio at the push of a button and at speeds of up to 11 mph (18 km/h).

The US gets a 428i model powered by a 4-cylinder, 2.0-liter turbocharged engine producing 240 hp (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 and an electronically limited top speed of 155 mph (250 km/h). In the 435i you get a larger 3.0-liter inline-six motor good for 300 hp (224 kW) and 300 lb-ft (406 Nm) capable of reaching 60 mph in 5.5 seconds en route to the same limited top speed.

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