Subaru drive axle boots fail because they are located too close to the exhaust system. A burning rubber/grease smell is a warning sign of an axle boot failure. Ignoring Subaru axle boot service until they fail may require a complete Subaru axle assembly replacement and a high repair or replacement cost.

Repair includes Subaru axle boot replacement and axle grease repack, which is a more economical option than an axle replacement.