2. Saturn Ion
The Saturn Ion stands out for its uninspired styling, dated technology, and underwhelming reliability. Once billed as an affordable compact, the Ion failed to capture much market excitement, and its discontinuation in 2007 only further diminished demand. With few parts worth salvaging and limited interest from collectors, the Ion rarely appears on thieves’ radar. As Edmunds notes, its lack of desirability and support in the aftermarket contribute to the Ion’s reputation as one of the most “unstealable” cars on the road.