2008 V8 Luxury Sport Sedans Comparison Test

http://www.edmunds.com/insideline/do/Drives/Comparos/articleId=126107 --- We regret to inform you that the era of the V8-powered midsize luxury sport sedan could be over. Gas prices arent the problem; instead, its the impending federal fuel-economy standards that could spell the end of these luxurious street sleepers.So this meeting of the 2008 Audi A6 4.2, 2008 BMW 550i, 2009 Jaguar XF Supercharged and 2008 Mercedes-Benz E550 might represent the end of an era.Under the new rules, shoving big V8s into midsize sedans will become a questionable prospect even for luxury brands. Without massive price increases, only the most expensive flagship models will be able to offer thirsty eight-cylinder engines, leaving the smaller sedans to get by with six cylinders or worse.With that prospect looming, we figured a comparison of the current crop of V8 midsize European luxury sedans was in order. They may not have much of a future, but they offer some of the best combinations of luxury, prestige and completel