There's about 15p/litre difference between diesel and Unleaded around here. I haven't seen any "pump" biodiesel for sale.
I've been driving a fair bit on business recently in the GLDT. My last trip from Newbury to Bradford and back, doing no more than 70 on the M1 (and usually sticking to HGV speeds - when the traffic is bad, you can't go much faster anyway!), trying not to use the brakes, and coasting where possible/safe, netted me 55mpg. If I took the roof bars off, I'd probably get more than that
This week I'm travelling from Newbury to Trowbridge in Wiltshire, which has a real mix of driving - A34, A303, past Stonehenge and across Salisbury Plain, then really winding, sometimes single-track roads (a much shorter route than M4 to Chippenham then down!). It's a bit too early to tell what the economy figure is.
The Hunter still has about a quarter of a tank left of the 50:50 veg/DERV mix I put in it in mid-March; I don't use it a huge amount! Be interesting to try that next week to see how it differs.
I drove my wife's 2001 Skoda Fabia 1.4 16v (petrol) to Cardiff and back last Wednesday, and was pretty astounded to get 48mpg (well, according to it's little trip computer anyway), again sticking to 70 on the M4, but with the a/c on all the time.
Mind you, that little thing has zero torque so it's not as relaxing to drive as something XUD9TE-equipped; but with the fuel price differential as it is, it makes you think...unfortunately it's too small for our impending baby, so the 2000 Honda Accord 1.8 auto that will be replacing it (courtesy of my dad!) will be a bit of a culture shock at the pumps
