These spy shots show the new BMW 4-series coupe completely undisguised, ahead of the car's expected debut at the Frankfurt motor show in September 2013. Mixing Concept 4-series proportions with regular 3-series details, the 4-series replaces the current 3-series coupe, and will spawn a high-performance M4 version.
BMW 4-series coupe: the undisguised spy shots
From the pictures, we can see the cab-back coupe stance has been preserved from the Concept 4-series, as has the small, front wing-mounted vent motif. The front bumper's full-width intake is very similar to the concept car, but the rear bumper has opted for a cleaner, less fussy design, sporting two tailpipes on this model.
The headlights look to be regular 3-series units, while the rear lights appear slimmer than regular F30-saloon clusters. The after-dark lighting also brings out the car's prominent rear wheelarch, blistered outwards more than the concept car.
What details do we know about the BMW 4-series?
Prices will rise slightly from today's 3-series coupe, as BMW tries to differentiate its saloon and coupe models (that's the reason for the name swap). Expect a new 4-series to cost around £30,000, and the drop-top model an extra £4k. The 4-series coupe, codenamed F32, will go on sale in late 2013, according to insider sources. The F33 convertible will stick with a folding hard top, and launch in spring 2014.
In 2015 we'll see a four-door coupe version of the 4-series: the 4-series Gran Coupe. Engine choices across the 4-series range will mirror the regular 3-series range, while M Division versions will boast a potent bi-turbo straight-six good for 444bhp.