Very much on the subtle side, exterior differences compared to the outgoing model consists of restyled bi-LED headlights, larger air intake, full LED taillights, new foglights and slightly altered rear facia.
Inside, the 4-series gains a steering wheel, upgraded materials with gloss black finish on the centre console, electroplated aluminium and chrome detailing, three new upholstery colours, double stitching on the instrument panel, optional Multifunctional Instrument Display similar to Audi's Virtual Cockpit Display, and Professional Navigation system. As before, Sport, Luxury and M-Line packages are offered as options.
Underneath its skin, the 4-series Coupe now sits 40 mm closer to the ground (Cabriolet 20 mm and Gran Coupe 30 mm) than before for improved handling, with M Sport and Adaptive Suspension available as cost extras.
Updated last year, the 4-series remains mechanically unchanged with a choice of three petrol engines; 420i (135 kW / 270 N.m), 430i (185 kW / 350 N.m), 440i (240 kW / 450 Nm), and four diesels; 418d (150 kW / 320 N.m), 420d (140 kW / 400 N.m), 430d (190 kW / 560 N.m), 435d xDrive (230 kW / 630 N.m).
Depending on the market, transmission are once again made up of a six-speed manual or eight-speed Steptronic, with either rear or xDrive all-wheel drive.
Expect exact details closer to its official launch later this year.
As with the 4-series, the M4 Coupe and Cabriolet receive the same revised exterior, but with the addition of the optional Competition Package that adds a bodykit and 20-inch forged light alloy wheels with black star spokes. Building on the same interior revisions as the 4-series, the M4 gains illuminated M emblems on the front seats, chrome inserts and the aforementioned upgraded navigation system.
Power from the 3.0-litre TwinPower straight-six turbo is again rated at 317 kW and 550 N.m of torque, although the Competition Package bumps this up to 331 kW with transmission options consisting of a six-speed manual or seven-speed M DCT.