The current F30 3 Series received a facelift last year, and its replacement – the G20 – isn’t expected to arrive until 2018. However, these new pictures confirm the new model is already at an advanced stage of development.
The test mule's camouflage reveals little about the styling, but the G20 3 Series is expected to have much tighter features and a harder-edged exterior.
The G20 is also expected to introduce BMW’s turbocharged 1.5-litre three-cylinder engine to the 3 Series line-up, with turbocharged 2.0-litre four-cylinder petrol and diesel engines directly above it in the range.
More potent models, including the M3, will most likely still use turbocharged in-line six-cylinder units.
When it arrives, the G20 will have to conform to the EU’s next wave of emissions legislation, meaning it will be the first generation of 3 Series tasked with producing an average CO2 emissions output of less than 100g/km.
Like its predecessor, it’s expected to be available in both rear and four-wheel drive forms.