Volkswagen has continued the drip-feed of information about the 2020 Mk8 Golf, revealing details about the car's 48V mild-hybrid powertrains.
Initially, the mHEV (that'd be mild hybrid electric vehicle) system will be mated with a 1.0-litre and 1.5-litre petrol engines and a DSG, but Volkswagen says the tech will eventually spread to "the entire fleet", and claims it's good for a 0.4L/100km improvement in consumption.
The system relies on a 48V belt-starter generator, which harvests energy when you lift off the throttle and uses it to offer a power boost when the driver buries the throttle.
It opens the doors for freewheeling with the engine off – when the driver lifts off the throttle, the engine shuts down with minimal fuss before bursting back to life when required – and means start/stop is smoother.
The conventional starter motor is only used on initial startup, with mHEV cars instead using the 48V starter/generator when the vehicle is actually running.
To maximise efficiency, the mHEV system will even consider navigation data to work out when it's likely to be capable of coasting. Clever.
Similar mHEV setups are becoming increasingly common. Audi and Mercedes-Benz have both blended 48V power with their four- and six-cylinder engines, partly to improve performance and partly to help cut emissions.
Volkswagen has its sights set on the ID. electric vehicle line-up as the sole form of electrification Down Under.
"We have no plans for MHEVs for this market," said Paul Pottinger, communications boss at VW Australia.
"In any case, we understand that these will be manufactured with petrol particulate filters. The decision to postpone the adoption of first world petrol standards until 2027 will see Australians increasingly miss out on technology such as this."