Among the many surprises Cameron Peters has up his sleeve is that although his 2002-reg Audi S8 is classed as Euro 3 for emissions purposes, it is, he tells me, exempt from London's ULEZ charge.
Generally speaking, only petrol cars certified as being Euro 4 and above (the classification was introduced in 2005) satisfy the NOx emissions standard used to determine the charge, making them exempt.
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