If you’re expecting the Optima to be a budget alternative to mainstream saloons like the Ford Mondeo and Vauxhall Insignia, then you might be a wee bit disappointed. It’s a shade cheaper to buy than its rivals, but no more than that, and you’re less likely to be able to negotiate a discount with your dealer. Resale values are nothing special for the class, either. Perhaps more critically, it’s not all that cost effective for the company car drivers with which cars like this are immensely popular. The CO2 emissions of 128g/km place it in a relatively high band for company car tax payments when compared with its best rivals, and a claimed average fuel return of 57.6mpg is no great shakes, either.. The Kia Optima is one of the best saloons you've probably never heard of. But that doesn't mean you should overlook it. After all, this is an incredibly smooth and spacious saloon that's well-equipped and well-finished. While crossovers may rule the roost, there's still lots to like about the Optima.. The Kia Optima looks good, but has some serious flaws in other areas, most notably ride comfort, refinement, interior quality and running costs..