Not really, but gave up my circa 2 litre diesel company cars and opted for the allowance to buy a celica, brings between 24-35 mpg (depending how much I use lift ) but overall I actually think it's saving me on fuel costs. I just filled up at 106.9/litre and the diesel pumps were 118.9/litre - combine that with the inefficiency of using a diesel for my 5 mile commute and I don't think it costs any more.
OR Short Answer
No