The Initial Quality Study (IQS) released by J.D Power and Associates each year measures vehicle quality at 90 days of ownership. Problems experienced by vehicle owners are separated into two categories: quality of design and quality of production (defects and malfunctions).
“Over the past 20 years, the automotive industry has improved in quality at a rate of 6% per year on average—a 20-year improvement rate of more than 120%,” the report states, adding that every seven to eight years, problem counts have been reduced by 50%.