In conjunction with its world debut at this week's North American International Automobile Show in Detroit, BMW have also taken the wraps off the pricing structure for the new 1-Series Convertible.

In conjunction with its world debut at this week's North American International Automobile Show in Detroit, BMW have also taken the wraps off the pricing structure for the new 1-Series Convertible. Hitting showrooms in March ready for summertime, the 128i will be priced from $33,875 and the 135i from a rather hefty $39,875, although a version of the M Sports package is standard equipment on the latter model.

BMW are keen to stress the Convertible's 2002 heritage, the concept of which remains in this four-seater convertible range, utilising six-cylinder engines in a rear-wheel-drive setup. The line-up consists of naturally-aspirated and forced-induction 3.0-litre six-cylinder units, the 128i featuring Valvetronic management for improved efficiency and responsiveness and the 135i employing direct injection, twin turbocharging and intercooling. The latter 300 hp model speeds to 62 mph in 5.4 seconds and onto a top speed of 155 mph.

But it is another statistic of particular importance on this drop-top 1-Series. And that's how fast it loses its roof. In just 22 seconds and even on the move at speeds of up to 25 mph, the electro-hydraulic roof can be operated. The Convertible retains the characteristic features of the Coupe: its distinctive kidney-grille, door sills and skirts front & rear, adding, of course, a soft-top roof in Convertible guise - producing a 'silhouette' form.

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