BMW spills all the beans on new 1 Series

The all-new 2012 1 Series is expected to make its world debut at the Frankfurt Motor Show this fall. And when it does, it will be a substantially different car than the model it replaces. The new model – code-named F20 and based on the same platform that underpins the (now only slightly larger) 3 Series – has grown considerably over the E81 it succeeds, with every dimension but height increasing. The changes benefit both interior and cargo space, two aspects where the outgoing model fell short.

The new sheetmetal has also bears revised styling, with a bigger face incorporating the giant eyes featured on BMW's latest concept cars, a more pronounced swage line and taillights moved outboard across the wider track to offer a larger liftgate aperture for increased ease-of-use. The Bavarians also appear to have paid close attention to the interior fit and finish to improve on the previous model's rather spartan cabin.

Under that long nose, the new baby Bimmer is being launched exclusively with four-cylinder engines, and while more variants are expected to follow, for now it's just the five-door hatch. A pair of 1.6-liter gasoline engines pack direct injection and offer 136 horsepower in 116i trim and 170 in the 118i. Three 2.0-liter turbo-diesels are also being offered overseas, ranging from 116 horsepower up to 184 in the flagship 120d. A 1.5-liter three-pot is expected to come in gasoline and diesel variants, while the top 128iS is slated to get a 245hp turbo 2.0-liter gasoline four to take the place of the current six-cylinder 130i.

All engines come mated to either a six-speed manual or an optional eight-speed auto from ZF, with an array of earth-friendly technologies including stop-start ignition and regenerative braking. Of course, this being the latest offering from a leading German automaker, all manner of electronic assists are on offer, from self-adjusting high-beams and lane departure warning to automatic traffic sign recognition and a back-up camera.