BMW dropped the official MSRP of all models making debut in Detroit, and one of them is the new 1 Series going on sale later this year in Spring as a 2012 model. The 1 Series range in America includes 128i Coupe, $31,825, 135i Coupe, $39,925, 128i Convertible, $37,475, 135i Convertible, $44,675.

Both coupe and convertible versions of the new 1er will be available as 128i and 135i models. The first gets a a 3.0-liter, 230 horsepower inline-6 engine that generates 200 lb-ft of torque, and the latter a features BMW’s newest, 3.0-liter inline-6 engine. Equipped with a single, twin-scroll turbocharger and BMW’s revolutionary Valvetronic throttle-less intake technology, the engine produces 300 horsepower and 300 lb-ft of torque.

The popular BMW 1 Series Coupe and Convertible models have received substantial enhancements for an early start to the 2012 model year. The 128i model has received BMW’s innovative Air Curtain system, which smoothes airflow over the front wheels to reduce wind resistance. All 1 Series models receive updated headlight and tail light assemblies, featuring a new “eyebrow” design up front and new tail lights at rear. Xenon Adaptive headlights – standard on 135i models, optional on 128i models – add LED backlighting for the new eyebrow and LED light tubes in the tail lights. All 1 Series models now feature standard iPod/USB integration. Convertible models now feature standard through-loading system for improved storage capacity, while 135i models gain standard power seats with adjustable lumbar support. Convertible models receive larger light-alloy wheels, now 17″ diameter on 128i Convertible and 18″ diameter on the 135i Convertible.