We all know new car prices are higher than ever, and they don’t appear to be cooling off anytime soon. That’s why the used market shouldn’t be overlooked, because some models, even ones that are a generation or two old, can still serve up plenty of fun behind the wheel. When shopping, avoid flagship performance models such as the Mercedes-AMG E63 or the BMW M5 because they are harder and more expensive to maintain. Instead, we’ve put together a list of true sleeper sedans that, with a simple tune, can turn from a humble ride into a legitimate performance monster.
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