Platinum and palladium supply probably will fall short of demand for a fourth year in 2015 as more usage in vehicles helps compensate for rebounding South African mine output, according to Johnson Matthey Plc.

Platinum demand will outpace supply by 1.13 million ounces this year and palladium’s deficit will be 1.62 million ounces, according to a presentation of London-based Johnson Matthey’s platinum-group metals report. They would be the biggest shortfalls ever, based on data going back more than three decades for the metals.