At launch, the range will kick off with a pair of turbocharged petrol engines: a 1.2-litre unit making 85bhp and a 1.4-litre boasting 138bhp.
The frugal 1.2 promises a claimed 57.7mpg and CO2 emissions of 113g/km, while the 1.4 returns 58.9mpg and 112g/km, helped by a cylinder deactivation system that cuts out the two middle cylinders to reduce fuel consumption between 1400 and 4000rpm.
Also planned, but not yet officially confirmed, are a more powerful version of the 1.2 and a less powerful 1.4. The 1.2 will make 103bhp and the 1.4 120bhp, although they aren’t expected here until later next year.
The technologically advanced (but expensive to make) 158bhp 1.4-litre TwinCharger engine, endowed with both a turbocharger and supercharger, has been dropped. However, word on the rumour mill suggests that VW could bring a turbocharged 1.8-litre engine to the new Golf line-up with a rumoured 178bhp, which would bridge the gap to the more performance-orientated models in the Golf range.
Diesels will major on 1.6 and 2.0-litre capacities. The 1.6 is a lightly reworked version of today’s unit, while the 2.0 is a heavily revised version of the current engine.
In standard tune, the 1.6 will make 103bhp and boast 74.3mpg and 99g/km. The more frugal BlueMotion variant claims 14mpg better at 88.3mpg, with CO2 emissions improved by 14g/km at just 85g/km.
A significant change with the 2.0-litre diesel is a new installation that switches the engine by 180deg for more efficient cooling. Power is 148bhp, with claimed economy of 68.9mpg and CO2 emissions of 106g/km. Also in the pipeline is a 177bhp version, to be badged GTD.
Sources close to VW engineering chief Ulrich Hackenberg also say there are moves to introduce a new performance-orientated Golf R diesel. Nothing is official at this stage, but talk centres around a twin-turbocharged 2.0-litre engine producing up to 222bhp.
Also planned for launch next year is a compressed natural gas-powered Eco Fuel version running a turbocharged 1.4-litre engine, although it’s unlikely that the model will be sold in the UK.
Further in the future, VW plans to launch both petrol-electric hybrid and all-electric E-motion versions of the new Golf.