Despite their popularity reaching all-time high, crossovers and SUVs still haven’t managed to resolve their fuel efficiency issues. True, they’re getting better year in, year out, but there’s still plenty of room for improvement. This is where hybrid systems come in handy. Problem is, even hybrid SUVs often fail to impress when it comes to fuel economy. Sure, they’re better than their conventional gasoline counterparts, but improvements are often marginal.