The phrase "flagship saloon" refers to a top-of-the-line luxury car model. It represents the highest quality and most prestigious sedan that a car company produces. Full definition
We can't help but feeling, however, with its new flagship saloon Opel hasn't quite done enough to make it feel premium. (motoring.com.au)
The new Acura TLX concept previews the brand's next flagship saloon model. (autocar.co.uk)
The Maserati Quattroporte for Centurion special series is based on the latest evolution of Maserati's iconic flagship saloon, combining distinctive Italian styling with prodigious performance and peerless driving dynamics. (topspeed.com)