Extended tank = ~160 miles of increased range. Sounds great!
Extra 30 litres/8 gallons would be awesome.
However I think they maybe even bigger news is this proves the existence of an OEM set up with fuel lines and pump and all to accommodate a gasoline/petrol sub tank for the hybrid. .
Imagine using those to hook up to one of these sub tanks!!! 80 Litres!!! (21 gallons) 39 gallons!
Even looks like the current 300 series 87 litre might fit due to lack of Add Blue/DEF conflict they mention. That’s 23 gallons or 41 gallons total!!!!