Reply To: The most efficient engines on the scheme. March 5, 2021 at 10:15 am #141647 DBtruthParticipantI think one of toyota’s self charging hybrids or one of the smaller diesel engines from the vw group (Audi, vw, seat, Skoda) could be worth a look. I used to have a vw group 1.6 diesel and I thought that was good on fuel