MPG doesn't matter one little bit!
What does matter is ££££££s spent on fuel.
If I use biodiesel that costs me 25 pence a litre to make, what do I care if the car does 28 mpg or 32? If I was buying pump fuel at £1.20 a litre I might start thinking about mpg.
CASH boys - it's what matters. How many £££££s are you paying for every 100 miles.
Not Miles per Gallon, but rather Miles per Pound cash, mp£.
CharlesY