[gnfargbl]

If he's doing less than 2,500 miles per year using the biofuel, that's not the case.

https://www.gov.uk/guidance/biofuels-and-other-fuel-substitu...

[cjrp]

According to that link it's actually if you use > 2500 litres/year, which is a lot. Assuming 40 MPG (UK), that would do you about 35k miles in a year.