Visual differences to the exterior are slight, and include a revised front bumper, new ‘kidney’ grilles and updated headlamps; which include LED lighting for the main beams.
The rear also gets a revised bumper and the 17- and 18-inch alloy wheels have been redesigned for the six- and eight-cylinder models respectively.
While the engine line-up in various markets is unchanged, an across-the-board improvement in efficiency means the full range is now EU6 emissions compliant.
In Australia, the current engine line-up consists of a 3.0 litre turbo-diesel and 3.0 litre turbocharged petrol engines, along with a twin-turbo 4.4 litre V8.
The sixes produce 230kW/630Nm and 235kW/450Nm respectively, while returning around 5.5 and 7.5 l/100km - depending on the variant.
The V8 is good for 330kW and 650Nm with a fuel figure of around 9.0 l/100km, and can propel the 650i Convertible as an example to 100km/h in 4.6 seconds.
BMW’s xDrive all-wheel-drive system is available on all 6 Series models, and improves the 650i Convertible’s 0-100km/h time by 0.1 second.
Both six- and eight-cylinder petrol models now come with a new sports exhaust featuring a switchable ‘flap’, while all 6 Series models will be fitted with an eight-speed automatic transmission with paddle shifters.
The updated M6 performer is the exception, with its seven-speed dual-clutch automatic and rear-wheel-drive only configuration.
The M6’s 4.4 litre turbocharged V8 produces 412kW/680Nm with a fuel figure of 9.9 l/100km in the Coupe and Gran Coupe, rising to 10.3 l/100km in the Convertible.
The 0-100km/h dash is dealt with in 4.2 seconds (4.3 seconds in the Convertible), and the top speed is limited to 250km/h.
BMW’s Competition Pack carries over as an optional extra from the outgoing model, lifting the power output and improving the 0-100km/h time by 0.1 seconds.
Inside, the new 6 Series models get higher-quality materials for an improved feel and an update to the head-up display, along with new two-tone leather interior options.
The 2015 BMW 6 Series and M6 are due to arrive in Australia around the middle of next year, with pricing and local specifications still to be confirmed.