HOW flash does a Lamborghini need to be? If you're Sam Newman, it seems it can never be flash enough.

The motormouth radio and television personality is suing a Lamborghini dealership for $1 million over a $645,000 yellow sports car he claims was sold to him under false pretences.

According to documents filed in the Federal Court this week, Newman claims Euro Automotive Group's principal dealer, Andrew Smith, sold him a 2005 Lamborghini Murcielago Roadster in September after telling him that a new model would not be released "for some time". But a new model, with increased engine capacity, came out this year, and Newman claims his car has been devalued as a result.