Currently reading: Forget a Corsa – I bought a 355bhp Audi S8 as my first car

Teenager seeks first car and buys Audi S8: It's not the conventional way to do it, but Cameron loves his 15mpg V8

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.