BMW has aimed higher with its new 3 Series sedan, adding the luxury kitbag of its more expensive
5 Series while building on the appeal of the outgoing model.
The intention is to offer more for comparatively less, along with a sleek look, upmarket interior, a range of fuel-efficient, all-turbo engines - and, for the first time, optional XDrive all-wheel-drive.
Other firsts in class are the choice of a full hybrid model, a new personalisation programme and a full-colour head-up display, projecting information on to the windscreen in front of the driver.
The German carmaker has released details of the new car ahead of its public debut at the Detroit motor show in January.
It says the 3 Series has more space and comfort than before and is better to drive than its main rivals, the Audi A4 and Mercedes-Benz C-Class.
It will go on sale here next year. It is unclear if XDrive will be available in right-hand-drive.
The 3 Series is BMW's most important model, both in terms of numbers sold and as a flag carrier for the company's reputation for quality, reliability and desirability.
BMW says it will have eight versions of the 3 Series on sale in different markets by March that emit less than 120g per kilometre of CO2.
Towards the end of 2012, BMW launches XDrive four-wheel-drive versions and the ActiveHybrid 3 which is essentially a 335i with a 40kW electric motor.
Many of the new features introduced in the new 5 Series and 1 Series have made their way into the 3 Series, including eight-speed automatic transmission, stop-start, electric-assisted steering, four selectable driving modes and a multi-function screen driven by the iDrive console knob.
The new 3 Series has been under development for longer than almost any other BMW. It was first spied testing early in 2009.
Weight has been reduced by a claimed 50kg compared to the previous model and the drag coefficient is down to 0.26 thanks to improvements in the aerodynamics.
These tweaks include a streamlined underside, covers which create a diffuser effect at the rear and channels in the front bumper which reduce the turbulence created by the front wheels.
The new 3 Series also features a much stiffer body and an all-new chassis with a longer wheelbase (up 50mm to 2810mm), with wider tracks (up 37mm at the front and 47mm at the rear) to improve handling.
Overall length has increased by 93mm and there's more space inside.
The exterior design has been inspired by the 5 Series. The new car's lights, flusher radiator grille and L-shaped LED taillights represent the biggest changes.
Under the skin, the chassis gets an updated version of the company's five-link suspension at the rear and more aluminium in the front set-up for lower unsprung weight.
BMW says the new suspension improves on the car's handling by making it even more agile and stable but with better ride comfort.
All models get new electric-assisted power steering to cut weight and improve fuel efficiency. BMW claims it is just as accurate and has as much feedback as a conventional hydraulic system. However, its Variable Sport steering will be available as an option, as will Adaptive M Sport suspension with electronically variable dampers.