"Oliver Keating" wrote in message ...

"DP" no@mail wrote in message ...
I remember promises being made about keeping the duty on diesel lower than
petrol because it is better for the environment

This simply isn't true though. Diesel cars produce more of virtually every
pollutant than petrol cars.

Also, for each litre of diesel burned, about 12% more CO2 is released than
for each litre of petrol.

So the claim that diesels produce less CO2 works only if it is at least 12%
more economical than a petrol vehicle.

I have a 1.4 dual Fuel Peugeot 306, I get 40mpg on petrol.
My partner has a 1.9 Diesel Turbo 306 and can get 55-60mpg.

Thats 37-50% further than I manage, and quite a bit more than the 12% you were looking for.

Ewan