Avantime Passion (French) - This website includes tutorials to maintain your Avantime, the story behind the car and an active forum.
Here are some other Avantime related sites.
Avantime Gallery - This website has a good range of photos, mostly from Avantime owners with many artistic shots.
Owners clubs and Forums
Avantime Owners UK - A very active forum for all things Avantime, Highly recommended to anyone who owns, or is thinking of buying an Avantime in the UK. There is an email address on the homepage you will need to contact to join the forum. They also organise regular meet ups.
Amicale Avantime (French) Subscription Owners Club and forum, also includes some good free to access information pages and sells replica Sport Kits to members.