Until now, the German giant had revealed only basic details of the new car's 'MQB' platform, along with a few hints on the names and capabilities of its new powertrains.
The new platform and construction techniques will make the 2013 Golf much lighter than its predecessor, and the smaller Mark IV of the late 90s had been mooted as the VII's goal weight.
New details reveal that the new Golf will measure 4255mm long, 1799mm wide and 1452mm tall, making for a 56mm and 28mm increase in length and width - and a sleeker-looking 28mm reduction in height.
Inside, overall cabin length grows by 14mm, and rear legroom is improved by 15mm. Shoulder room grows by 31mm up front and 30mm in the rear, and storage behind the back seats is up 30 litres to 380 litres.
The new Golf's kerb weight is up to 100kg lighter than its predecessor, with 38kg gone from the body, 26kg lost through greater use of aluminium, 12kg from equipment components and 3kg from wiring.
Fuel consumption is down as a result, improved across the range by an average of 13.9 percent - some variants marking a 23 percent improvement.
Volkswagen also announced a number of new diesel engines earlier this year, ranging in size from 1.6 to 2.0 litres. More details on those here.
As for the hero GTI, Britain's Car magazine reports that we can expect a version of the existing 2.0 litre turbo engine to provide power, boosted to around 161kW and 350Nm.
That's a modest power boost, but a significant smack of extra torque - and the lighter platform will contribute to improved performance figures.
The new Golf will reportedly include an eight-inch touchscreen, while its safety package will boast the latest range of up-spec features: adaptive cruise control, fatigue detection, all-round sensors and the latest generation of the Park Assist system.
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