How much extra cost to do 70 mph on motorway ?
You will have to ask Roly, I seldom drive over 60 mph on the motorway
Here we go the press recon on 36.9 mpg on pure petrol @ 70mph on the motorway
https://www.greencarguide.co.uk/car-reviews-and-road-tests/mitsubishi-outlander-phev-4wd-2019-review
Unfortunately I have suffered a brain injury and occasionally I get confused and often say the wrong thing.