Then don’t forget that the 3% supplement applied when calculating the taxable benefit is reinstated soon (it was previously waived for many ‘clean’ diesels). More specifically it is reinstated with effect from 6 April 2006 for diesel cars registered on or after 1 January 2006. The message is clear - any new (Euro IV compliant) diesel company car registered by the end of 2005 will retain the benefit of the waiver even after 5 April 2006. On a £25,000 car the waiver is worth £750 a year in reduced taxable benefit. Every little helps!