It's the brand’s first step towards electrification which will culminate in the launch of a pure electric mid-sized sports car by 2020.

The model, which is capable of up to 31 miles of electric-only range, uses an electric motor with a turbocharged 3.0-litre V6 petrol engine, the same set-up used in the Porsche Panamera E-Hybrid. The motor acts as both an electric motor and a generator. Performance figures have not yet been revealed but a total output of 450bhp is expected.