We are thinking of trading our Toyota Yaris diesel next year for the new Yaris Hybrid, which is coming soon. However, talking to our mechanic and the Toyota salesperson, we are advised that benefit from a hybrid will be achieved only if we drive lots of short distances. As we do 15,000 miles per year with a long journey most months (in excess of 300 miles) then we wonder if there is any benefit to be gained by swapping our diesel car for a hybrid.