Turbo like just about everything Saab do, yes, but just because they're turbo'd doesn't make them automatically have performance car costs, they do low-mid 30s in mpg, and taking a quick glance the brake discs cost about £10 more than a mondeos for example, and £3k gets an 03 plate 9-5 estate.
Saab and Volvo are both good alternative options, yes they're not quite as cheap to run as the Mondeo but they're certainly not in a different league as long as main dealers aren't involved.
And OK, the MG version is overkill and a Rover 75 V6 might only do the low 30s in MPG and the belts changes are pricey but that aside, I don't think they're bad or expensive cars?