The range of the supermini has risen by 6%, from 209 to 222 miles, while the crossover has increased 4%, from 201 to 209 miles.
One of the key reasons the increase has been made possible is because of improved efficiency from the heat pump, which controls the temperature of the interior. This is also now included as standard on both cars.
“Heat pumps are more efficient than conventional HVAC systems, as they require less energy from the battery, to the benefit of driving range,” Vauxhall said. “Customers will notice the improvements particularly when driving in the winter months.”
Both have also gained a set of low-rolling-resistance tyres (with an A+ rating), which are designed to reduce energy loss. The tyres measure 16in for the Corsa-e and 17in for the Mokka-e.
The models have also gained a new transmission reducer, which converts motor revs to wheel speed to optimise range.
Other manufacturers have also recently increased range on some of their electric models.