I have had problems with French fuel in the past - Alpinas are 98 octane engines - and the Roadster in particular reacted badly to low octane fuel - considerable pinking and a lack of low end response. When crossing France laterally it is worth filling up each time you find a large "proper" fuel station - and unless you really really have to avoiding small rural supermarket stations - I am looking at you Mr "97 Octane my Arse" Intermarche!!!
The B3 had to be filled with 95 octane a couple of times in Italy when I was down to fumes and couldn't find 98 - it survived by the performance was heavily impacted!!
I now have to remember the practical car (B5s) takes 98 and the fun car takes 95 (Supersport)!
And don't get me started on finding 1l of 0w30 oil in France!!!
