Discounting is back with a vengeance in the UK new car market, with some seemingly incredible deals available on certain models. Yet look closer and you will see that there's plenty of smoke and mirrors at play.

Vauxhall tops the discounting charts with an average discount of 17.5% across its model range, according to data from What Car?'s team of Target Price mystery shoppers.

As our deep dive into Vauxhall shows, these discounts are far greater than the 8.2% on an average Vauxhall this time last year; yet since then, Vauxhall has significantly increased its prices.

The upshot is that in net cash terms, the average Vauxhall is actually £213 more expensive than this time last year.