75 miles for £20 of super unleaded fuel at £1.27 per ltr i get, i thought that was very cheap as that's a mixture of motorway, city, ect. Same with the road tax you just get use to paying it & don't bat an eye lid to it.
Trust me on this they're worth the money they cost to run, lower cost cars to run on paper usually are the cars that you want rid of because they're aren't worth the running costs & again usually you don't save much over a 12 month period anyway.
My advise to anyone buying a Brera that's going to be doing around 8k is buy one run it for 6 months & see how it is on costs. If it's costing more than you can afford then sell it on, but don't pass one off over the potential running costs because you'll never know what it's like to own a V6 Brera, & you may just regert another perchase you made because of those doubts