Toyota and Subaru are grappling with reports of rough idle and stalling conditions on their new sporty coupes.
The problems on initial batches of the Subaru BRZ coupe and its Scion FR-S twin--known as the Toyota FT-86 outside the United States--is being caused by a software mapping glitch.
Toyota Motor Corp. and Subaru, a unit of Fuji Heavy Industries, developed the sporty cars jointly. And except for some badging and front fascia differences, they are basically clones.
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