The new Subaru Legacy improves crash-worthiness and provides a stiffer platform for a smoother, quieter ride - but retains the crisp handling and balance Subarus are known for. Legacy 2.5i and 2.5i Premium models feature 16-in. wheels (alloy on Premium); the 2.5GT models are exclusively equipped with 18-in. alloy wheels with 225/45R18 tires. The 6-cylinder Subaru Legacy 3.6R models have 17-in. alloy wheels with 225/50R17 tires.

All Subaru Legacy models for 2010 are equipped as standard with Vehicle Dynamics Control (VDC), which combines stability and traction control capability. All 2010 Subaru Legacy models are equipped with a standard 4-wheel disc Anti-lock Brake System (ABS) with Electronic Brake-force Distribution (EBD). Additionally, Subaru's Brake Assist safety system is available on all models.

MacPherson-type strut front suspension is mounted to a new engine cradle, and the engine is attached to the cradle using new hydraulic mounts. The new cradle uses high-strength steel and is designed to also enhance frontal crash protection. A new double-wishbone rear suspension, mounted to a sub frame, replaces the previous multi-link configuration to provide improved ride, stability and handling. The enhancement of body rigidity and the new suspension design help to reduce levels of noise, vibration, and harshness (NVH). Increased wheel travel and optimized suspension geometry also contribute to improved ride comfort.