The mid-size luxury segment is nearly always a hotly contested battlefield, and these days are no exception. Over the last weeks and months we’ve spent a lot of time driving the new (or newish) entries from Acura, BMW, Mercedes-Benz, Saab, and more, so we thought it high time to bring together a feature that lays bare what’s on offer. We did refrain from including the—often wildly different—performance models here (AMG, M, V, etc.). That’s a guide for a different day.