2015 Subaru WRX 2.5L Petrol · KW15 YDB

The Subaru WRX presents a mixed picture. The most recent test on 2025-06-17 at 97,078 miles passed, but the tester flagged corrosion on both rear coil springs and noted the rear brake discs were worn, pitted, or scored. These are not immediate failures, yet they signal a shift from the clean record seen in prior years. The trend is not sharply deteriorating, but it is no longer stable. A vehicle that sailed through 2024 and 2022 without a single defect is now showing age-related wear in critical suspension and braking components. The mileage accumulation is steady and unremarkable for an eleven-year-old car. Between 2021-09-22 and 2025-06-17, the odometer moved from 72,083 to 97,078 miles, averaging roughly 5,800 miles per year over that four-year window. That is slightly lower than the lifetime average of 8,825 miles per year, suggesting the car may have seen lighter recent use or spent periods stationary. No glaring gaps or sudden jumps appear in the record. The data is clean and consistent, which implies regular annual testing rather than neglect. A buyer should focus on the rear suspension and braking system during any in-person inspection. Corroded coil springs are a structural concern on a performance saloon like the WRX. Surface rust can hide deeper pitting that reduces the spring's load-bearing capacity and ride height over time. Have both rear springs closely examined for flaking or thinning, especially near the top and bottom seats. The worn and pitted rear brake discs flagged in 2025 suggest the car may have been driven hard or left standing for stretches, both common with this model. Check disc thickness and look for lipping or heat cracking. Beyond the flagged items, inspect the underbody thoroughly. Several past tests mention under trays or sill covers fitted, which can trap moisture and conceal corrosion. Remove any covers if possible and examine the sills, subframe mounting points, and rear arches for rust. The WRX's turbocharged engine and all-wheel-drive drivetrain also demand attention. Look for oil weeping around the turbo feed pipe, intercooler joints, and cam covers. Listen for knock from the rear differential and diff mounts during a short drive. The MOT record gives no reason to walk away, but it does confirm this car is entering the phase where rust and wear demand closer scrutiny than its earlier clean bills of health might suggest.