Based upon sales patterns in 2017 and pre-sales indicators for 2018, Mr. Tormey predicts that diesel will account for only 45% of the overall market, down from 65% in 2017, while preference for petrol hybrid power trains will double from 3.4% in 2017 to 7% in 2018. Looking further ahead, Mr. Tormey believes that by 2020 diesel is likely to be down close to 20% of the overall market, with hybrid picking many diesel defectors to round out at roughly 25% of the market.