1. At the start of your journey use EV mode and deplete the battery down to 50/60%, 2. Switch to HEV mode and use EV mode for 30/40 mph sections only. Over the Brecons use HEV mode (I take it your vehicle has paddles, uphill zero, downhill use maximum regereration), going downhill especially in the Brecons the camshaft timing will switch to the Atkinson cycle (your ICE unit will use no fuel going downhill)
Great thanks 🙂
In HEV mode the battery is held at say 50% and drives as a normal hybrid continually using and topping the battery up to the 50% point?