Mitochondrial dicarboxylic transporter catalyzing the exchange of dicarboxylic acids like malate and succinate for inorganic phosphate. Required for growth on ethanol and acetate. Homodimer. Binds to the TIM22 translocation complex during import. The C-terminal Solcar repeat is required for association with the TIM22 translocation complex during import. Present with 3390 molecules/cell in log phase SD medium. Belongs to the mitochondrial carrier (TC 2.A.29) family.