What is the purpose of vehicle durability testing?

Durability testing validates that vehicles and components withstand real-world usage over their intended lifetime without failure. Testing involves accelerated procedures that compress years of customer usage into weeks/months using severe driving, environmental exposure, and repeated stress cycles. Goals include identifying design weaknesses before production, validating reliability targets, and building confidence in warranty performance. Durability testing covers all systems: powertrain, chassis, body, electrical, and interior.