Listen for a rhythmic metallic tapping from the engine. This usually signals failing bearings, which requires a full engine rebuild.

The turbocharged "Boxer" engine is sensitive to oil quality. Look for documented oil changes every 3,000–5,000 miles.

Often called the "Sweet Spot." Subaru resolved early clutch and electrical issues from the 2015–2016 models. These use the FA20DIT engine, which is generally more efficient for daily driving.

The WRX is a "tuner favorite," which means many used examples have been pushed to their limits.

Choosing the right "year" is the most critical step in your purchase.

Check for oil or coolant leaks where the engine block meets the heads. While better on newer models, it's a historic Subaru weak point.