As fuel costs show no sign of dropping, the small car is once again in vogue, making Saturn the darling of GM. With its Ion coupe and sedan, Saturn offers buyers a genuine alternative to the popular Japanese and Korean makes, and a customer service model that focuses on total satisfaction from purchase to trade-in. Though the Ion is not yet the equal of such vehicles as the Honda Civic and Toyota Corolla, it is a worthy compact offering excellent fuel economy, an agreeable price tag and a number of innovative options, including the high-performance Red Line package.