Rarely, and it is rarely worth it. To register (matricular) a car with the DGT you must be the car's owner and prove your identity and domicile in Spain, usually with an NIE (foreigner tax number) and a Spanish address such as a padrón certificate. A car coming from another EU country also needs:
- Deregistration for export in the country of origin
- A Spanish ITV technical inspection and technical data sheet
- The registration tax (Impuesto Especial sobre Determinados Medios de Transporte, form 576): 0% to 14.75% of the car's taxable value depending on CO2 emissions, unless an exemption applies
- The municipal road tax (IVTM) and the DGT fee
Without a Spanish domicile, you do not get past the first step.