The Audi A8 faces tough competition in the luxury saloon class from the likes of the popular Mercedes S-Class and technological powerhouse, the BMW 7 Series. With a new model having been spotted undergoing testing, how does the current Audi A8 stack up? Has it stood the test of time, or does it feel dated? It certainly doesn't look the most exciting saloon, but does it make up for this with its im
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