The manufacturer triumphed in three Next Green Car Awards, including two separate titles for the forthcoming Vauxhall Ampera and one for the new Vauxhall Corsa.
The Ampera won the overall gold award and the next generation title in the green car awards, months before it even goes on sale in the UK.
Designed as a more practical alternative to electric cars, the four-seat hatchback looks much more like a conventional car than previous electric offerings.
It does boast an electric motor, which is capable of powering the car for up to 40 miles. However, when battery charge runs low a ‘range extender’ petrol engine kicks in to recharge the battery and supply a further 310 miles of range.
Dr Ben Lane, Managing Editor of Next Green Car, said the Ampera was a ‘game changer’, describing it as "An electric car with no range anxiety, ultra-low emissions, state-of-the-art design and it’s a joy to drive."
The more conventionally-powered Vauxhall Corsa was the other car to drive away with an award, taking the best supermini title ahead of the likes of the Ford Fiesta.
The Vauxhall Corsa was singled out for its 1.3-litre CDTi ecoFLEX engine, which is capable of 76.8mpg and boasts CO2 emissions of just 98g/km – making it road tax free.
Priced at just £13,500, the Vauxhall Corsa was praised by judges: "A value green car, the new Corsa is great to drive, has improved styling, and delivers fantastic fuel economy without cutting back on comfort or safety features."
Duncan Aldred, Vauxhall’s Managing Director, described himself as being ‘very pleased’ by the awards, adding: "With its fresh new look and even cleaner engines, the Corsa is as popular as ever, the 94g/km ecoFLEX model honoured with the supermini award is zero-rated for car tax and is congestion charge exempt."