BMW M3 ( E90/ E92)
The V8- engined M3 is in the same ballpark as the C63 for prices, although you will find more sub-£ 20,000 examples at the bottom end.
Despite being the C63’ s dynamic inferior, the four- wheel- drive Audi’s used values are similar to, or even ahead of, the bombastic AMG’S. From £ 22,000.
A bargain when new, the V8 Vauxhall’s modest second- hand values ( starting at £ 14,000) undersell its performance and raw but effective charm.