As with the saloon, there will be a wider look thanks to larger air intakes and new LED daytime running lights. New light designs and twin tailpipes are the main changes at the back. The new iDrive system will be the main change inside, as well as a set of improved materials to increase the upmarket feel.
The engine range will also change, in line with the saloon, which means all engines will be turbocharged. There's a three-cylinder 318i and the ever-present 320d gets an EfficientDynamics model for increased efficiency as well. The 328i will be renamed 330i too, reflecting a power increase.
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There will be few other visual changes, if the light disguise on this test car is anything to go by, so we'll just have to wait for the car's official reveal for the rest of the details - including economy, practicality and performance figures.
Prices aren't likely to change much for the updated car, so expect the new BMW 3 Series GT to cost form around £30,000 when it launches later this year.
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